Please follow these steps:
To send free SMS in mtn lines, requires mtn sim no credit / airtime.
Please dial *460*1# When you dial the code, mtn mtn will present you with more biz plan.
Then you can start sending unlimited SMS lines mtn, if you have sent many messages, and refused to send again kindly dial *460*2# to continue.
If the same problem persists, please dial *460*3# continue to rotate several codes to send unlimited SMS.
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