Let's talk about the Lycamobile 30-Day Prepaid SIM Card. On paper, it sounds like a dream for travelers: 3GB high-speed data, unlimited international calls to 100+ countries, and triple-cut SIM compatibility. But does it deliver? Here's my take after using it during a recent US trip.

The Good: When it works, it's fantastic. The 4G LTE speeds were reliable for Google Maps and light browsing (though don't expect to stream HD videos). I loved being able to call home without worrying about crazy international fees. The triple-cut SIM fit perfectly in my iPhone - no scissors needed!

The Bad: Activation was... an adventure. Like many reviewers, I hit snags. The included $19 plan didn't automatically activate - I had to contact customer support (who were surprisingly helpful once reached). Pro tip: Have WiFi ready for activation - trying to register at the airport with jetlag was not fun.

Watch Outs: This won't work in all devices (bye-bye tablets) and some users report compatibility issues with non-US phones. Also, that 'included' first month? You might need to jump through hoops to actually use it.

Final Verdict: When it works, it's a budget-friendly option for short US stays. But be prepared for potential activation headaches - maybe keep your home SIM as backup just in case.