Pros: The Heayzoki USB Modem is praised for its portability and ease of use in some regions. Users report successful plug-and-play functionality with Telcel SIM cards in Mexico, making it a handy travel companion.

Cons: Several users faced issues with compatibility, particularly with T-Mobile SIM cards. Battery life is inconsistent, ranging from 3 to 12 hours, and signal strength can be weak, requiring the device to be carried around for better reception.

Performance: While some users experienced fast speeds, others found the connection slow despite using 5G SIM cards. The modem's effectiveness varies significantly by location and carrier.

Verdict: This modem is a hit-or-miss depending on your carrier and location. It’s best suited for travelers who can verify SIM compatibility beforehand but may disappoint those expecting universal performance.