Unable to set up Telecom SMS Center.

1. The number of Beijing Unicom SMS Center is+861301012500;

2. The general setting method is: find "Settings" → "Information Center" in the SMS function, set the number to "+86130112500" in the information center, and click "Save" to successfully set the SMS center number.

Tips: Different brands of mobile phones have different settings. I suggest you check the instruction manual of your mobile phone.