What is the problem that some service short messages show "no theme" after receiving them?

Methods: Settings-More-Application Management. Find "Google Text-to-Speech Engine" in it. Is this thing updated in the background or is it careless? After the update, you can't receive the text message. Cancel the update and restore the factory settings to solve the problem.

It is recommended to go to Settings-Applications-All-SMS-Clear Data.

Restart the phone to see if there is a signal problem.

Check whether the number of the information center is correct: Information-Menu button in the lower left corner-Settings-Information Center. Only GSM mobile phones can modify the information center number, CDMA mobile phones do not support it. The number of centers in different operators and regions is different. Please contact the network operator for confirmation. The number of the information center must be preceded by "+".

Try to replace another sim card, or wipe the contact point between the mobile phone card and the mobile phone (whether the SIM card is in poor contact).