What is the correct way of checking for mobile network available (no data connection)

Question

What is the correct way of checking if a mobile network (GSM) connection is available on Android? (>2.1) I don\'t want to check if there is data connection available over the mo

Answer 1

For me works fine PhoneStateListener:

private static class YourListener extends PhoneStateListener {
    @Override
    public void onServiceStateChanged(ServiceState serviceState){           
        if (serviceState.getState() == ServiceState.STATE_IN_SERVICE) {
             // connected to cellular network
        }
    }       
}

And register in TelephonyManager:

TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
YourListener listener = new YourListener();
tm.listen(listener, PhoneStateListener.LISTEN_SERVICE_STATE);

At registration the telephony manager invokes the onServiceChanged() method on the listener object and passes the current state.

PS: PhoneStateListener uses Handler to post result to UI thread, so you should create it in UI thread.