Android開發中，可能需要區分當前的phone是gsm或cdma型別，有時候cdma phone註冊到4G網路時，呼叫[email protected]獲取到的型別為PHONE_TYPE_GSM，其實除了這個方法獲取sim卡型別，還可以根據iccid會mccmnc來區分當前的sim卡型別，甚至可以區分得更詳細（移動、聯通、電信），具體方式如下：

//Only one sim card
private static final int PHONE_TYPE_CMCC = 0;
private static final int PHONE_TYPE_UNICOM = 1;
private static final int PHONE_TYPE_CDMA = 2;

private int getPhoneType() {
    int phoneType = -1;
    TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    String mccMnc = tm.getSimOperator();
    if ("46000".equals(mccMnc) || "46002".equals(mccMnc)
            || "46007".equals(mccMnc) || "46008".equals(mccMnc)
            || "45412".equals(mccMnc)) {
        phoneType = PHONE_TYPE_CMCC;
    } else if ("46001".equals(mccMnc) || "46006".equals(mccMnc)
            || "46009".equals(mccMnc)) {
        phoneType = PHONE_TYPE_UNICOM;
    } else if ("46003".equals(mccMnc) || "46005".equals(mccMnc)
            || "46011".equals(mccMnc) || "45502".equals(mccMnc)
            || "45507".equals(mccMnc)) {
        phoneType = PHONE_TYPE_CDMA;
    }
    return phoneType;
}