My mobile phone Samsung E 120l, I can't send short messages with Unicom card, and I keep reminding that it is being sent, and it has been swiped. Still not working.

If your mobile phone can't send short messages, you can try to restart or change your mobile phone to test whether there are any of the following situations:

1. SMS center number is set incorrectly;

2. No signal or low battery;

3. Because the system is busy during the holiday short message sending peak period, it is suggested to try again later or avoid the sending peak period;

4. The sending format is incorrect. If you send a short message to PHS users, you need to add the area code before the number;

5. The short message sending time exceeds 24 hours;

6. SMS inbox and outbox are full.

7. If you want to check whether the SMS function is turned on, you can contact the local manual customer service for processing.

If the above reasons cannot be solved, you can contact the local manual customer service or go to the business hall to confirm whether the SMS function is enabled and hand it over to the staff.