Let me start by saying this SIM card is a lifesaver for my security cameras and mobile hotspot. The automatic switching between AT&T and T-Mobile networks is brilliant when I'm traveling across states. The initial 10GB trial data was perfect for testing - just remember to set APN to 'unet' and enable roaming!

The setup was surprisingly simple. I popped it into my unlocked router, updated the APN settings, and boom - instant connectivity. No activation fees or credit checks make this super accessible. The three-size pre-cut SIM (nano/standard) fits most of my IoT devices without needing adapters.

However... (and this is a big however) the service can be inconsistent. Like one reviewer mentioned, I've experienced sudden drops in connection that required device resets. When it works, it's fantastic 5G/4G LTE speeds, but when it doesn't, you'll be pulling your hair out trying to reconnect.

The unlimited data claim comes with an asterisk - after your high-speed data runs out, you're throttled to painful 256kbps unless you purchase more data. And speaking of data plans, they're not the most competitive price-wise compared to some alternatives.

Pro tip: This is DATA ONLY - no calls or texts. Perfect for my GPS tracker and tablet, but don't expect phone functionality. Also works best in urban areas; rural coverage can be spotty depending on which carrier network it latches onto.

Final verdict? Great temporary solution or backup option, especially for IoT devices where traditional phone plans don't make sense. Just don't expect flawless reliability - when it works, it's amazing value; when it doesn't... well, let's just say their customer support better step up their game.