Question

I’m trying to get the neighbouring cell info in Android but the function getNeighboringCellInfo() always return null.

I used the following code :

protected void getCellInfo() {
    TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

    List<NeighboringCellInfo> neighborCells = telephonyManager.getNeighboringCellInfo();
    if (neighborCells == null) {
        OutUtils.debug("no neighbor cells");
    } else {
        ...
    }
}

The context variable is from a Service class.

My AndroidManifest.xml permission

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

I tried with and without enabling the “Use 2G networks” option in Android.

Any idea ? Thanks

Answer 1

I think, maybe you haven’t set all necessary permissions in Manifest. look here Null Issue with NeighboringCellInfo, CID and LAC

If you think you have them, put the manifest in the question, too, please.