Not long ago so many people are complaining BB10 USSD (*216*3*1#) not working
IT IS, but not on every Sim
Perhaps they are having a system upgrade

HERE
Use these alternatives to subscribe
Method 1 - Dial subscription code
Just dial *216# and follow the instructions to activate the subscription of your choice.
However, If it fails and you get the response "Hi, Your Activation to BB10 LITE Daily is failed." when subscribing for MTN Bblited, simply send "EXPIRE" or "STOP" to 21600 and redial the Bblited *216# subscription code again.
Method 2 - Calling Customer Care Self service menu
Another method to activate the any of the BB10 plan is to call Customer Service and use the self service menu NOT talking to the agents o. We hope the normal *216*3*1# code will be back soon.
To activate BBLITED N70 daily plan, just dial the customer care number 180, then after their usual welcome talk, choose your preferred language.
Then press 6, wait for some few seconds (say 4 secs) before pressing the next number. Press 2, wait for some secs then press 1,wait again then press 3, then press 3 again, finally wait for the voice prompt to give you options to press the corresponding numbers (you can press 3 for bblited).
Then follow the instructions and activate your respective BB 10 plans.
To confirm, just check your balance, once your money has been deducted, you are good to go.
To make the explanation for circumventing the MTN BB10 activation failed wahala easier, just dial 180, then follow the number prompts below:
PS: Make sure you wait for about 3 seconds interval before pressing the next number in the sequence
1 6 2 1 3 3 3 3 Your phone number, add #, then 1. (For Bblited)
1 6 2 1 3 3 3 1 Your phone number, add #, then 1. (For Bblitem)
1 6 2 1 3 3 3 2 Your phone number, add #, then 1. (For Bblitew)
If it works for you let us know in the comment box below and also share the information with others by clicking the Facebook or Twitter button.