Many people that has MTN 7.5gb are complaining that there is sim card are no longer browsing while some are still enjoying there own. To me all my 7.5GB sim are working perfectly but i don't know why some are complaining but it. A friend from ufarblog whatsapp group share a trick on how to reactivate any sim that has 7.5gb before and stopped working this days
How to reactivate your MTN 7.5gb
Simply text 1 to 131
And you will receive a respond from MTN that ''You have sent an invalid command''
Don't worry because it's the beginning of your MTN 7.5gb browsing, and your 7.5gb is now activated and you can now continue your browsing