What's with the blank SMS sent by the mobile phone?

Is it blank to send text messages to anyone at will? If a short message is blank, it may be because the short message you edited has become a BUG similar to a game on the other party's mobile phone, which is unrealistic.

You go to the mobile/Unicom business hall and find the professionals inside. It's simple.

The last time I texted that person, I failed, and the rest was fine. As a result, I went to the MM in the mobile hall and dialed once or twice, which was ok.

Supplement: I suggest you call 10086 for manual consultation, or go directly to the service hall. The possibility of the latter solution is 90%.