Have you been in a situation where you have sufficient airtime/credit on your phone and yet you phone tells you Message not sent or marked your text with red icon showing you that the message failed to send, it can happen irrespective of the mobile network that you are using Mtn, Glo, Etisalat or Airtel the same problem can occur but i have seen the solution to that problem.
I recently woke-up one morning trying to send an sms with my phone but i keep getting message not sent error that i should review my message and resend again which i did but keep getting the same error message but guess what, i started going to my phone settings one after the other to check the if i can figure out why i can't send text messages while i have sufficient credit on my phone only to discover that on my sms settings that something was missing which is sms service center, all mobile operators in Nigeria has their own unique sms service center numbers which i will show you.
I don't know how my own SMS service center disappeared maybe i was the one who mistakenly deleted it or maybe not but what matters is that i figured it out and fixed it.
SMS not sent Solution
If you have been experiencing the same error when trying to send text messages on your phone kindly navigate to you phone text message option, select settings then you should see something like sms settings when you click on it you should be able to see sms service center which is where you should check to make sure that your sms service sent is correct but in case you don't know network sms service center of your mobile operator then check it below.
All Network operators SMS service centers
It will never be easy to some people to know their network operators SMS service center numbers that is why i deem it necessary to list all the Nigerian mobile telecommunication sms service centers.
MTN SMS SERVICE CENTER NUMBER
Here is the mtn sms service center number +234803000000
GLO SMS SERVICE CENTER NUMBER
If you are using Glo mobile network use this number +2348050001501
ETISALAT MESSAGE CENTER NUMBER
Airtel Nigeria message center is +2348090001518
AIRTEL MESSAGE SERVICE CENTER NUMBER
Airtel Nigeria also has their own unique message service center number which is +2348020000009
once you change the approximate message center number on your phone then trying resending your meaages and see the magic but if this doesn't solve your problem then reply to us through comment for more help