Android-determine SIM card status

Android-determine SIM card status

Android determines the SIM card status and whether the SIM card is inserted.
For example, determine the preferred network type based on the SIM.

SIM card status

/*** Determine whether the SIM card is included ** @ return status */public static boolean hasSimCard () {Context context = App. getAppContext (); TelephonyManager telMgr = (TelephonyManager) context. getSystemService (Context. TELEPHONY_SERVICE); int simState = telMgr. getSimState (); boolean result = true; switch (simState) {case TelephonyManager. SIM_STATE_ABSENT: result = false; // No SIM card break; case TelephonyManager. SIM_STATE_UNKNOWN : Result = false; break;} Log. d (TAG, result? SIM card: No SIM card); return result ;}

All statuses

        TelephonyManager telMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);        int simState = telMgr.getSimState();        switch (simState) {            case TelephonyManager.SIM_STATE_ABSENT:                // do something                break;            case TelephonyManager.SIM_STATE_NETWORK_LOCKED:                // do something                break;            case TelephonyManager.SIM_STATE_PIN_REQUIRED:                // do something                break;            case TelephonyManager.SIM_STATE_PUK_REQUIRED:                // do something                break;            case TelephonyManager.SIM_STATE_READY:                // do something                break;            case TelephonyManager.SIM_STATE_UNKNOWN:                // do something                break;        }