如何编程检查Android平板电脑是否有simcard功能？

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

int simState = telephonyManager.getSimState();
if (simState == TelephonyManager.SIM_STATE_ABSENT) {
    // SIM卡不存在
} else if (simState == TelephonyManager.SIM_STATE_UNKNOWN) {
    // SIM卡状态未知
} else if (simState == TelephonyManager.SIM_STATE_PIN_REQUIRED) {
    // SIM卡需要PIN码解锁
} else if (simState == TelephonyManager.SIM_STATE_PUK_REQUIRED) {
    // SIM卡需要PUK码解锁
} else if (simState == TelephonyManager.SIM_STATE_READY) {
    // SIM卡可用
}

int phoneType = telephonyManager.getPhoneType();
if (phoneType == TelephonyManager.PHONE_TYPE_NONE) {
    // 设备不支持电话功能
} else if (phoneType == TelephonyManager.PHONE_TYPE_GSM) {
    // 设备支持GSM电话功能
} else if (phoneType == TelephonyManager.PHONE_TYPE_CDMA) {
    // 设备支持CDMA电话功能
}