Honestly,I have being very angry since mtn reviewed their data plans and I know you feel the same way too.but I have good news for you, you can now get more value for your money by getting double of the plan you subscribed for.
Just send DOUBLE TO 131
Send PROMO TO 131
send FREE TO 131
This are the messages you will receive
1.sorry, The command you entered is incorrect
2.Y’ello! Your request has been received and is being processed. Then a response shortly. Please don’t resend your request. Thank you!
3.Dear customer,Enjoy data offers on MTN Deal zone,Dial *131*1#”.
Take Note of the third message, Before you proceed to subscribing for any data plan of your choice by dialing *131*1# and you’ll receive double of the plan you purchase.
My suggestion is that you start with small plans,just to be sure that you received the double of your data before subscribing for the bigger plans.
To check your data balance dial *131*4# or send 2 to 131.