How to avoid getting scammed with a used/resold SIM card at Sharm El Sheikh airport?

One traveler skips local SIM cards entirely: bought a mini pocket WiFi router in Russia before the trip instead of an eSIM, since eSIM data cost for a single trip is comparable to the router price, which can then be reused on future trips. Also important to register phone numbers/devices right after arrival to avoid connectivity issues.

Another commenter confirms sellers happily push used SIM cards on tourists who are tired after the flight and don't know they need to verify everything immediately. There were also reports of vendors offering to swap a tourist's used SIM for water or beer at departure. Many buyers, after checking the operator's app, found fewer gigabytes than what was promised at purchase.

The original message in the thread: at the airport, used SIM cards are sold for about the price of a burger, and nobody checks the remaining data volume — these SIMs can then be resold to an unsuspecting tourist. Tip: check the remaining gigabytes on the spot before buying.