public static boolean isExistSim(Context context) {
		TelephonyManager mTelephonyManager = (TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE);
		if (mTelephonyManager.getSimState() != TelephonyManager.SIM_STATE_READY) // SIM卡没有就绪
		{
			return false;
		}
		return true;
	}