Xiaomi 1S Youth Unicom 3G card can't send short messages.

There may be many reasons why mobile phones can't send text messages, such as:

1, you can't send short messages because of the arrears of your mobile phone;

2. After the mobile phone is in arrears, you may not be able to send text messages or make phone calls. In this case, you can restart your phone and try again.

3. If the local signal is unstable, the mobile phone will not be able to send short messages normally;

4. If there is a problem with the mobile phone, it will also lead to the failure to use the SMS function normally.

You can install this mobile phone card under other mobile phone tests to see if it can be used normally. Or use other normally available mobile phone cards to test this phone.