How-to double your MTN: Turn 1GB TO 2GB, 2GB TO 4GB (eligible for all Mtn subscribers)

As we known that there is no free browsing with MTN. Unless you are able to tweaked your imei but still that will not allow you to use free browsing. You have to get something in order to turn it to a bigger one.
As Airtel made it official for some users to get double data, many people have been looking on how to get same on mtn. After many researches by Guru, you can get double data on your Mtn SIM card but with the help of imei tweaking. But tweaking is a bit difficult to do that's why this tricks made it to existence.
             Fortunately, you don't need to go all long process of tweaking your mtn imei in order to be eligible for double data offer. You are now eligible with this simple tricks you are about to read.

How-to activate this MTN double data without tweaking my imei ?

>>> Send DOUBLE to 131
You are likely to get a message in this form "Yello! your request has been received and is being processed. You will receive a response shortly. Please don't resend your request.
Thank you"
( this is normal sermon you received everytime you send something to 131 )
Then you will receive another message shortly "Sorry, the command you have entered is incorrect"
Don't mind them and go ahead and send the second message

>>> Send PROMO to 131
And you will receive " "Yello! your request has been received and is being processed. You will receive a response shortly. Please don't resend your request.
Thank you"

>>> Send FREE to 131
And you will receive "Dear customer, Enjoy data offers on MTN deal zone, Dial *131*1#"
After the third message, just know that your SIM has been activated and you can go ahead and subscribe to any data plan of your choice by dialing *131*1# and you will receive double data of your purchase.

Do not subscribe to huge data bundles to avoid story that touch, start with smaller ones and if you got double data bundle then you can go for bigger ones. To check your data balance send 2 to 131 or dial *131*4#.