Though there is enough credit on your SIM card but you are having a hard time sending text messages as you keep receiving a notification like ‘sending failed’ or ‘message sending error’. Though the issue might evolve from ‘bad network signal’ but more than not, it could also be due to wrong or incomplete message center number.
So, if you have been experiencing this problem time and again, you should just check [via the message setting] to see if there is no figure missing from the message center number or whether the one you have on your phone corresponds to that of your network service provider. In essence, you do not have to pay a dime to any technician or go through the ‘assiduous’ task of waiting on a customer care attendant to get this (problem) resolved.
It is in this regard that I wrap this short write-up with the correct message center number of different network providers:-
Airtel: +2348020000009
MTN: +2348030000000
GLO: +2348050001501
9Mobile: +2348090001518