How to get correct cell id and location area code in Android?

I have found so much code that fetches cell-id and location area code and I use the code below to fetch cell-id and location area code.

TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();

int cid = cellLocation.getCid();
int lac = cellLocation.getLac();


The problem is, when I use an airtel-sim card it works fine and give cell-id =4331 and loc =610. But when I use a relience-sim card then it give wrong result cell-id =11541 and loc=18823. How might I resolve this?

cid = cellLocation.getCid() & 0xffff;

2 Answers
2

Solutions are highlighted in the following thread: Android: CellID not available on all carriers?

In short you need to mask the number you get from getCid() when in 3G network with 0xffff. Following is a snippet:

getCid()

0xffff

GsmCellLocation cellLocation = (GsmCellLocation)telm.getCellLocation();

new_cid = cellLocation.getCid() & 0xffff;
new_lac = cellLocation.getLac() & 0xffff;


Hope that helps

Cell IDs and LAC ids are different based on networks, as you have mentioned that you are using two different SIMs of different networks so you will get different cell and lac ids these will not be same. Because cell id of one operator will be different than other network as two different towers are used of different networks and they have assigned accordingly both ids.

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