This is an updated post for MTN Music Plus of free 150MB and I'm sure that MTN Music Plus tweak is not something new to most of regular/old fans here. This post will guide you on how you can turn your MTN Music Plus of free 150MB to somehow unlimited.
Don't mind my word "somehow", because when you finish the initial 150MB, there will be little intervals before you continue your surfing. That is why I used the word, somehow.

The MTN Music Plus of free 150MB was customized only to access the MTN Music downloading site, but you have nothing to worry, since you know your way and if not, just continue your reading..., with the below procedure, you will be able to access any website and use it to surf with any apps.

How to Get Free MTN 150MB
Simply text Music to 5900
Wait for few seconds, then check your MTN music plus data balance by dial *559*2#.

How to Turn the Normal 150MB to Unlimited
Your browsing will stop immediately you exhaust the free 150MB given to you, but the below method will guide you on how you can keep renewing the free 150MB over and over to continue your surfing. 

Method 1:
1. After You have exhausted your initial 150MB 2. Make sure your airtime balance is #0.00 to avoid deduction of your money.
3. Text D to 5900, And another 150MB will be given to you.
4. After getting your reply, You can Check your data balance by dialing *559*2# Now connect and resume your surfing.
5. After exhausting the 150MB given to you again, Send Cancel7D to 5900
6. Then wait for the reply and send D again to 5900.
7. Check your balance again when they reply you.

That is how you can keep on renewing the 150MB over and over.
I know this procedure can be a bit stressful that’s the reason I posted another method below which is very much easier.