Are old iPhones unable to be use SIM cards overseas, and if so, can it be avoided?









up vote
2
down vote

favorite












An iPhone 4 I got in March 2011 in Australia was able to be used with a SIM when I visited Japan in 2011 to 2013. However, when I tried getting a SIM for it in September 2016, the store staff said that that phone was too old to use one of their SIMs.



Is that true, and if so, is it something I can fix for that iPhone, such as upgrading iOS version? It uses a micro SIM, has a model number of MC603X/A (corresponding to iPhone 4), and has a version of 7.1.2 (11D257) which seems to indicate the iOS version.



I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well, but want to take this as a backup.










share|improve this question

















  • 6




    You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
    – JonathanReez
    Jul 22 '17 at 8:05






  • 1




    At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
    – WGroleau
    Jul 26 '17 at 3:00










  • @WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
    – jwenting
    Jul 26 '17 at 5:30






  • 2




    Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
    – WGroleau
    Jul 26 '17 at 12:19






  • 1




    Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
    – gnasher729
    Apr 22 at 9:30














up vote
2
down vote

favorite












An iPhone 4 I got in March 2011 in Australia was able to be used with a SIM when I visited Japan in 2011 to 2013. However, when I tried getting a SIM for it in September 2016, the store staff said that that phone was too old to use one of their SIMs.



Is that true, and if so, is it something I can fix for that iPhone, such as upgrading iOS version? It uses a micro SIM, has a model number of MC603X/A (corresponding to iPhone 4), and has a version of 7.1.2 (11D257) which seems to indicate the iOS version.



I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well, but want to take this as a backup.










share|improve this question

















  • 6




    You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
    – JonathanReez
    Jul 22 '17 at 8:05






  • 1




    At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
    – WGroleau
    Jul 26 '17 at 3:00










  • @WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
    – jwenting
    Jul 26 '17 at 5:30






  • 2




    Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
    – WGroleau
    Jul 26 '17 at 12:19






  • 1




    Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
    – gnasher729
    Apr 22 at 9:30












up vote
2
down vote

favorite









up vote
2
down vote

favorite











An iPhone 4 I got in March 2011 in Australia was able to be used with a SIM when I visited Japan in 2011 to 2013. However, when I tried getting a SIM for it in September 2016, the store staff said that that phone was too old to use one of their SIMs.



Is that true, and if so, is it something I can fix for that iPhone, such as upgrading iOS version? It uses a micro SIM, has a model number of MC603X/A (corresponding to iPhone 4), and has a version of 7.1.2 (11D257) which seems to indicate the iOS version.



I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well, but want to take this as a backup.










share|improve this question













An iPhone 4 I got in March 2011 in Australia was able to be used with a SIM when I visited Japan in 2011 to 2013. However, when I tried getting a SIM for it in September 2016, the store staff said that that phone was too old to use one of their SIMs.



Is that true, and if so, is it something I can fix for that iPhone, such as upgrading iOS version? It uses a micro SIM, has a model number of MC603X/A (corresponding to iPhone 4), and has a version of 7.1.2 (11D257) which seems to indicate the iOS version.



I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well, but want to take this as a backup.







japan cellphones south-korea






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jul 22 '17 at 6:04









Andrew Grimm

12.2k969178




12.2k969178







  • 6




    You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
    – JonathanReez
    Jul 22 '17 at 8:05






  • 1




    At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
    – WGroleau
    Jul 26 '17 at 3:00










  • @WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
    – jwenting
    Jul 26 '17 at 5:30






  • 2




    Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
    – WGroleau
    Jul 26 '17 at 12:19






  • 1




    Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
    – gnasher729
    Apr 22 at 9:30












  • 6




    You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
    – JonathanReez
    Jul 22 '17 at 8:05






  • 1




    At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
    – WGroleau
    Jul 26 '17 at 3:00










  • @WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
    – jwenting
    Jul 26 '17 at 5:30






  • 2




    Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
    – WGroleau
    Jul 26 '17 at 12:19






  • 1




    Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
    – gnasher729
    Apr 22 at 9:30







6




6




You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
– JonathanReez
Jul 22 '17 at 8:05




You should've ignored the store employees and bough the SIM anyway. Most of the time they have no idea what they're talking about.
– JonathanReez
Jul 22 '17 at 8:05




1




1




At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
– WGroleau
Jul 26 '17 at 3:00




At one shop, they only had full size SIMs. Guy pulled out a pair of scissors and cut it to nano size. And it worked.
– WGroleau
Jul 26 '17 at 3:00












@WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
– jwenting
Jul 26 '17 at 5:30




@WGroleau nano != micro. Otherwise correct. They even have templates you can print out and do it yourself
– jwenting
Jul 26 '17 at 5:30




2




2




Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
– WGroleau
Jul 26 '17 at 12:19




Obviously if cutting down to nano doesn't break it, cutting down to micro won't.
– WGroleau
Jul 26 '17 at 12:19




1




1




Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
– gnasher729
Apr 22 at 9:30




Every time a tried a SIM card in the UK, they are full size but pre-cut so you can reduce them to micro or nano size without any tools.
– gnasher729
Apr 22 at 9:30










5 Answers
5






active

oldest

votes

















up vote
2
down vote



accepted










In Japan, eConnect lists the iPhone 4 with iOS 7.1.2 as compatible. I surmise that all other technically identical (Docomo-based, data-only) SIMs from other providers should work as well.






share|improve this answer





























    up vote
    5
    down vote













    When coming into Incheon airport from KIX, I noticed three places selling SIMs.



    One appeared to be from a major Korean brand best known abroad for electronics (such as LG or Samsung), though it's possible that the SIM booth was merely next to it. They tried out their SIM on my new phone (iPhone 5S IIRC), and apparently it didn't work, but they had a WiFi router available. Suspecting a scam, or at least a more expensive option, I decided to go elsewhere.



    Another place was a convenience store with a large sign saying they sold SIMs. As the store was busy, I decided to avoid it.



    I found another booth dedicated to SIM cards and the like, and they were able to set me up. They noticed that my connection had a certain quality when I should have been able to get better (eg 3G vs 4g etc.), and they worked out I had configuration still set up on my phone which was for my Japanese SIM card, and they uninstalled it and got a better connection.



    Moral of the story: sometimes one retailer are able to supply something that another retailer apparently couldn't, so consider shopping around.






    share|improve this answer



























      up vote
      1
      down vote













      Is it possible they just didn't have a larger sim card anymore that would fit it? And that simply putting it in an adapter would have fixed it? I am quite sure that given the right size, a sim card will just work in any unlocked phone. New sim cards should still adhere to basic specifications though they may have some new features other than simply being smaller. As Jonathan said, most likely this employee just doesn't know what he/she is talking about.






      share|improve this answer






















      • Most SIM cards are sold with all 3 standard formats in the same package.
        – JonathanReez
        Jul 22 '17 at 8:05










      • That's not an answer.
        – fkraiem
        Jul 22 '17 at 8:05

















      up vote
      1
      down vote













      If your iPhone is newer than iPhone 5 (nano-sim), most (probably all) major 3 Korean carriers (SKT, KT, LG U+) should have SIM available. Can't confirm if you're on micro-sim.






      share|improve this answer




















      • he says quite clearly it's an iPone 4 with a micro sim :)
        – jwenting
        Jul 26 '17 at 5:30






      • 1




        @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
        – revi
        Jul 26 '17 at 5:47

















      up vote
      0
      down vote













      Apart from maybe having to cut down a larger sim to micro sim size, any sim should work in the phone BUT you might not be able to use all the network services.



      E.g. your phone only has 2g data (probably), so their 4g network which you're paying for will be downgraded for you to 2g performance.



      Usually those guys telling you they can't sell you what you want is an attempt to sell you something else, something like a late model phone...






      share|improve this answer




















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        5 Answers
        5






        active

        oldest

        votes








        5 Answers
        5






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes








        up vote
        2
        down vote



        accepted










        In Japan, eConnect lists the iPhone 4 with iOS 7.1.2 as compatible. I surmise that all other technically identical (Docomo-based, data-only) SIMs from other providers should work as well.






        share|improve this answer


























          up vote
          2
          down vote



          accepted










          In Japan, eConnect lists the iPhone 4 with iOS 7.1.2 as compatible. I surmise that all other technically identical (Docomo-based, data-only) SIMs from other providers should work as well.






          share|improve this answer
























            up vote
            2
            down vote



            accepted







            up vote
            2
            down vote



            accepted






            In Japan, eConnect lists the iPhone 4 with iOS 7.1.2 as compatible. I surmise that all other technically identical (Docomo-based, data-only) SIMs from other providers should work as well.






            share|improve this answer














            In Japan, eConnect lists the iPhone 4 with iOS 7.1.2 as compatible. I surmise that all other technically identical (Docomo-based, data-only) SIMs from other providers should work as well.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Apr 22 at 2:09

























            answered Jul 22 '17 at 7:48









            fkraiem

            9,16712561




            9,16712561






















                up vote
                5
                down vote













                When coming into Incheon airport from KIX, I noticed three places selling SIMs.



                One appeared to be from a major Korean brand best known abroad for electronics (such as LG or Samsung), though it's possible that the SIM booth was merely next to it. They tried out their SIM on my new phone (iPhone 5S IIRC), and apparently it didn't work, but they had a WiFi router available. Suspecting a scam, or at least a more expensive option, I decided to go elsewhere.



                Another place was a convenience store with a large sign saying they sold SIMs. As the store was busy, I decided to avoid it.



                I found another booth dedicated to SIM cards and the like, and they were able to set me up. They noticed that my connection had a certain quality when I should have been able to get better (eg 3G vs 4g etc.), and they worked out I had configuration still set up on my phone which was for my Japanese SIM card, and they uninstalled it and got a better connection.



                Moral of the story: sometimes one retailer are able to supply something that another retailer apparently couldn't, so consider shopping around.






                share|improve this answer
























                  up vote
                  5
                  down vote













                  When coming into Incheon airport from KIX, I noticed three places selling SIMs.



                  One appeared to be from a major Korean brand best known abroad for electronics (such as LG or Samsung), though it's possible that the SIM booth was merely next to it. They tried out their SIM on my new phone (iPhone 5S IIRC), and apparently it didn't work, but they had a WiFi router available. Suspecting a scam, or at least a more expensive option, I decided to go elsewhere.



                  Another place was a convenience store with a large sign saying they sold SIMs. As the store was busy, I decided to avoid it.



                  I found another booth dedicated to SIM cards and the like, and they were able to set me up. They noticed that my connection had a certain quality when I should have been able to get better (eg 3G vs 4g etc.), and they worked out I had configuration still set up on my phone which was for my Japanese SIM card, and they uninstalled it and got a better connection.



                  Moral of the story: sometimes one retailer are able to supply something that another retailer apparently couldn't, so consider shopping around.






                  share|improve this answer






















                    up vote
                    5
                    down vote










                    up vote
                    5
                    down vote









                    When coming into Incheon airport from KIX, I noticed three places selling SIMs.



                    One appeared to be from a major Korean brand best known abroad for electronics (such as LG or Samsung), though it's possible that the SIM booth was merely next to it. They tried out their SIM on my new phone (iPhone 5S IIRC), and apparently it didn't work, but they had a WiFi router available. Suspecting a scam, or at least a more expensive option, I decided to go elsewhere.



                    Another place was a convenience store with a large sign saying they sold SIMs. As the store was busy, I decided to avoid it.



                    I found another booth dedicated to SIM cards and the like, and they were able to set me up. They noticed that my connection had a certain quality when I should have been able to get better (eg 3G vs 4g etc.), and they worked out I had configuration still set up on my phone which was for my Japanese SIM card, and they uninstalled it and got a better connection.



                    Moral of the story: sometimes one retailer are able to supply something that another retailer apparently couldn't, so consider shopping around.






                    share|improve this answer












                    When coming into Incheon airport from KIX, I noticed three places selling SIMs.



                    One appeared to be from a major Korean brand best known abroad for electronics (such as LG or Samsung), though it's possible that the SIM booth was merely next to it. They tried out their SIM on my new phone (iPhone 5S IIRC), and apparently it didn't work, but they had a WiFi router available. Suspecting a scam, or at least a more expensive option, I decided to go elsewhere.



                    Another place was a convenience store with a large sign saying they sold SIMs. As the store was busy, I decided to avoid it.



                    I found another booth dedicated to SIM cards and the like, and they were able to set me up. They noticed that my connection had a certain quality when I should have been able to get better (eg 3G vs 4g etc.), and they worked out I had configuration still set up on my phone which was for my Japanese SIM card, and they uninstalled it and got a better connection.



                    Moral of the story: sometimes one retailer are able to supply something that another retailer apparently couldn't, so consider shopping around.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Sep 28 '17 at 13:01









                    Andrew Grimm

                    12.2k969178




                    12.2k969178




















                        up vote
                        1
                        down vote













                        Is it possible they just didn't have a larger sim card anymore that would fit it? And that simply putting it in an adapter would have fixed it? I am quite sure that given the right size, a sim card will just work in any unlocked phone. New sim cards should still adhere to basic specifications though they may have some new features other than simply being smaller. As Jonathan said, most likely this employee just doesn't know what he/she is talking about.






                        share|improve this answer






















                        • Most SIM cards are sold with all 3 standard formats in the same package.
                          – JonathanReez
                          Jul 22 '17 at 8:05










                        • That's not an answer.
                          – fkraiem
                          Jul 22 '17 at 8:05














                        up vote
                        1
                        down vote













                        Is it possible they just didn't have a larger sim card anymore that would fit it? And that simply putting it in an adapter would have fixed it? I am quite sure that given the right size, a sim card will just work in any unlocked phone. New sim cards should still adhere to basic specifications though they may have some new features other than simply being smaller. As Jonathan said, most likely this employee just doesn't know what he/she is talking about.






                        share|improve this answer






















                        • Most SIM cards are sold with all 3 standard formats in the same package.
                          – JonathanReez
                          Jul 22 '17 at 8:05










                        • That's not an answer.
                          – fkraiem
                          Jul 22 '17 at 8:05












                        up vote
                        1
                        down vote










                        up vote
                        1
                        down vote









                        Is it possible they just didn't have a larger sim card anymore that would fit it? And that simply putting it in an adapter would have fixed it? I am quite sure that given the right size, a sim card will just work in any unlocked phone. New sim cards should still adhere to basic specifications though they may have some new features other than simply being smaller. As Jonathan said, most likely this employee just doesn't know what he/she is talking about.






                        share|improve this answer














                        Is it possible they just didn't have a larger sim card anymore that would fit it? And that simply putting it in an adapter would have fixed it? I am quite sure that given the right size, a sim card will just work in any unlocked phone. New sim cards should still adhere to basic specifications though they may have some new features other than simply being smaller. As Jonathan said, most likely this employee just doesn't know what he/she is talking about.







                        share|improve this answer














                        share|improve this answer



                        share|improve this answer








                        edited Jul 22 '17 at 9:24

























                        answered Jul 22 '17 at 8:01









                        Sebastiaan van den Broek

                        1,752717




                        1,752717











                        • Most SIM cards are sold with all 3 standard formats in the same package.
                          – JonathanReez
                          Jul 22 '17 at 8:05










                        • That's not an answer.
                          – fkraiem
                          Jul 22 '17 at 8:05
















                        • Most SIM cards are sold with all 3 standard formats in the same package.
                          – JonathanReez
                          Jul 22 '17 at 8:05










                        • That's not an answer.
                          – fkraiem
                          Jul 22 '17 at 8:05















                        Most SIM cards are sold with all 3 standard formats in the same package.
                        – JonathanReez
                        Jul 22 '17 at 8:05




                        Most SIM cards are sold with all 3 standard formats in the same package.
                        – JonathanReez
                        Jul 22 '17 at 8:05












                        That's not an answer.
                        – fkraiem
                        Jul 22 '17 at 8:05




                        That's not an answer.
                        – fkraiem
                        Jul 22 '17 at 8:05










                        up vote
                        1
                        down vote













                        If your iPhone is newer than iPhone 5 (nano-sim), most (probably all) major 3 Korean carriers (SKT, KT, LG U+) should have SIM available. Can't confirm if you're on micro-sim.






                        share|improve this answer




















                        • he says quite clearly it's an iPone 4 with a micro sim :)
                          – jwenting
                          Jul 26 '17 at 5:30






                        • 1




                          @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                          – revi
                          Jul 26 '17 at 5:47














                        up vote
                        1
                        down vote













                        If your iPhone is newer than iPhone 5 (nano-sim), most (probably all) major 3 Korean carriers (SKT, KT, LG U+) should have SIM available. Can't confirm if you're on micro-sim.






                        share|improve this answer




















                        • he says quite clearly it's an iPone 4 with a micro sim :)
                          – jwenting
                          Jul 26 '17 at 5:30






                        • 1




                          @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                          – revi
                          Jul 26 '17 at 5:47












                        up vote
                        1
                        down vote










                        up vote
                        1
                        down vote









                        If your iPhone is newer than iPhone 5 (nano-sim), most (probably all) major 3 Korean carriers (SKT, KT, LG U+) should have SIM available. Can't confirm if you're on micro-sim.






                        share|improve this answer












                        If your iPhone is newer than iPhone 5 (nano-sim), most (probably all) major 3 Korean carriers (SKT, KT, LG U+) should have SIM available. Can't confirm if you're on micro-sim.







                        share|improve this answer












                        share|improve this answer



                        share|improve this answer










                        answered Jul 26 '17 at 0:13









                        revi

                        439413




                        439413











                        • he says quite clearly it's an iPone 4 with a micro sim :)
                          – jwenting
                          Jul 26 '17 at 5:30






                        • 1




                          @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                          – revi
                          Jul 26 '17 at 5:47
















                        • he says quite clearly it's an iPone 4 with a micro sim :)
                          – jwenting
                          Jul 26 '17 at 5:30






                        • 1




                          @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                          – revi
                          Jul 26 '17 at 5:47















                        he says quite clearly it's an iPone 4 with a micro sim :)
                        – jwenting
                        Jul 26 '17 at 5:30




                        he says quite clearly it's an iPone 4 with a micro sim :)
                        – jwenting
                        Jul 26 '17 at 5:30




                        1




                        1




                        @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                        – revi
                        Jul 26 '17 at 5:47




                        @jwenting "I'll be going to Japan and Korea this September, and I've got a more recent iPhone as well" (emphasis mine).
                        – revi
                        Jul 26 '17 at 5:47










                        up vote
                        0
                        down vote













                        Apart from maybe having to cut down a larger sim to micro sim size, any sim should work in the phone BUT you might not be able to use all the network services.



                        E.g. your phone only has 2g data (probably), so their 4g network which you're paying for will be downgraded for you to 2g performance.



                        Usually those guys telling you they can't sell you what you want is an attempt to sell you something else, something like a late model phone...






                        share|improve this answer
























                          up vote
                          0
                          down vote













                          Apart from maybe having to cut down a larger sim to micro sim size, any sim should work in the phone BUT you might not be able to use all the network services.



                          E.g. your phone only has 2g data (probably), so their 4g network which you're paying for will be downgraded for you to 2g performance.



                          Usually those guys telling you they can't sell you what you want is an attempt to sell you something else, something like a late model phone...






                          share|improve this answer






















                            up vote
                            0
                            down vote










                            up vote
                            0
                            down vote









                            Apart from maybe having to cut down a larger sim to micro sim size, any sim should work in the phone BUT you might not be able to use all the network services.



                            E.g. your phone only has 2g data (probably), so their 4g network which you're paying for will be downgraded for you to 2g performance.



                            Usually those guys telling you they can't sell you what you want is an attempt to sell you something else, something like a late model phone...






                            share|improve this answer












                            Apart from maybe having to cut down a larger sim to micro sim size, any sim should work in the phone BUT you might not be able to use all the network services.



                            E.g. your phone only has 2g data (probably), so their 4g network which you're paying for will be downgraded for you to 2g performance.



                            Usually those guys telling you they can't sell you what you want is an attempt to sell you something else, something like a late model phone...







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Jul 26 '17 at 5:32









                            jwenting

                            6,15911423




                            6,15911423



























                                 

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