MTN Keep My Number allows you retain your number while you are abroad. This rules out the chances of your number being recycled and sold to someone else. Upon your return you start to use your number like you never left. Send KMN to 36500 or dial *365*1# to activate.
I used to be able to send and receive both SMS and calls from the US from my MTN.
But recently, I can no longer do any of that.
I do recharge my phone periodically to keep...