To avail of the GP (Grameenphone) 200 SMS for 30 Days offer, you can use the following code:
Dial *121*1015# from your GP mobile number to activate the 200 SMS for 30 Days offer.
Please note that the availability and terms of this offer may vary based on your location and the current promotions offered by GP. It is recommended to check with GP customer service or visit the official GP website for the most accurate and up-to-date information on available offers and their respective activation codes.