Telephony.java

package com.fernandomantoan.ramaispti.android.util;

import android.app.Activity;
import android.content.Context;
import android.telephony.TelephonyManager;

public class Telephony {
	public static boolean isTelephonyAvailable(Context context) {
		TelephonyManager tm = (TelephonyManager) context.getSystemService(Activity.TELEPHONY_SERVICE);
	    return tm != null && tm.getSimState() == TelephonyManager.SIM_STATE_READY;
	}
}