Terms and condition Limited time offer. Prepaid customers with non-4G SIMs nationwide (that is, they are still using older 2G or 3G SIMs). You can get a Zong 4G SIM from the nearest CSC/Franchise or Retailer. Dial *44# from you new 4G SIM. The 4000 MB and 400 Zong minutes will expire 7 days after activation via shortcode. You will be charged OOB rate i.e. Rs.1/MB and standard call charges after the consumption of resources.