Pls my Android Infinix-X551 hot note don't send incomplete message. Like sending 8 to 306

[AC Question]

Pls my Android Infinix-X551 hot note don't send incomplete message. Like sending 8 to 306. But if I put the Sim in another phone it will be sent. But does not send through my own phone

 

[Abu Sorf]

I also have a similar challenge with my infinix hot x554, I can't send messages to certain contacts or numbers, especially if the recipient's number is less than 10 digits. But when I put the same sim card in a different phone, the message is sent.