Magic Tricks Of Increase Your Megabits (MB) Validity For 30 Days (Grameenphone)
Tricks Details:
• Firstly you have to dial *111*6*6.
• Then Switch off your phone for 15 minute.
• Open the SIM and dial *500*1#.
• Now wait few minute and then again dial *500*11*1#.
• Now shut and re-open your phone and then check out the MB period is 30 days.