Description : How to extend MB in GP SIM ?
Last Answer : How to extend MB in GP SIM: Step 1: Dial * 5000 # Step 2: 8 ( Facebook Pack , Smart Plan 20 GB etc.) Step 3: 1 ( Social Pack). Step 4: 1 TK 1 for 1 MB , 2. 5 TK for 7 days , 3. ... just dial code: * 5000 * 8 * 1 * 4 * 1 #. Then Grameenphone SIM will immediately extend the validity of your internet.