Yes, it is possible and people are already enjoying free 100MB data by using MTN Smart Offer on their Android MTK devices. This method so far is the latest IMEI tweaking method in March and April. And it is very fast and reliable.
How to Tweak Your Android device and Get MTN Smart offer 100MB
Simply tweak your IMEI. You can tweak the last 5 digits of this IMEI 359767054248402 then SMS the word Smart to 131 and you will be credited 100MB.