Puffin Smart 4G 5G LTE Data Only SIM Card - Reliable Connectivity for Security Cameras, Travel Hotspots and Dashcams - Works on AT&T and T-Mobile Networks

I recently purchased this SIM card on Amazon, and I couldn’t be happier with the experience! The product arrived quickly, well-packaged, and exactly as described. Setting it up was a breeze—clear instructions made activation super simple, and I was connected in no time. The SIM card offers excellent coverage and fast data speeds, perfect for my needs whether I’m streaming, browsing, or staying connected on the go. The price was very reasonable for the quality and service provided, and it’s been reliable with no dropped calls or connectivity issues. I also appreciated the customer support from the seller, who promptly answered a question I had about compatibility before purchase. Overall, a seamless and satisfying experience—highly recommend this SIM card to anyone looking for a dependable mobile solution!

Worked WONDERFULLY!! Perfect solution to my GPS/DASH CAM connectivity issues. These cards were very easy to set-up.

So far so good. Works like a charm

This is a data only sim; no voice. Works very well. I use this with a Netgear MiFi to replace the defunct WiFi tech in my car so my car’s live data navigation works. I also can connect other devices to the MiFi. While in use, I’ve seen it connected to T-Mobile, AT&T and Verizon in Houston. I tried it for a month for $10 for 1GB, then I extended my plan to 12 months for $60 for12GB. Very cost effective! There are more than 10 plans available. To activate: 1) Follow instructions for your device to determine the correct size you need to trim the sim to, and 2) follow the instructions on spectrumsim.com for your device to activate it on your device. And their customer service is great, they responded within 24 hours as promised. I contacted them because I wanted to switch plans after my first one ended, and they gave me precise instructions which worked the first time. Update June 2025: I renewed for more gigabytes for a year, now that I have had a chance to use it in different ways. I now also use my mifi hotspot for connecting my laptop to work from while travelling. It's so useful to have a secure device that isn't tied to just one carrier, coupled with a sim card that can and does connect to the best available connection from AT&T or T-Mobile or Verizon. I traveled to an area where AT&T has weaker connections and the mifi with the Puffin sim card just switched automatically to the available network, which was Verizon in tha area. You can renew or upgrade your data plan easily from the SpectrumSim website, too. As far as I was able to find, their plans were the most competitively priced on Amazon with the added benefit of not beingimited to only one of the three major carriers. Note: Your device needs to be unlocked to do the same. But even if your device is tied to only one of those networks, you'll still get a competitively priced data plan with this sim card.

worked great in my rv using the one control. set up in minutes!

Easy to connect data network. Support AT&T and T-Mobile for 70mai 4G devices. Support is very helpful.

Was expecting to have to change settings on my camera, put in and started working immediately. the subscription plans are better and cheaper than most other sims. my previous was charging $155 a year that came with my camera... edit I bought a year subscription, after 3 months the sim stopped working, contacted support, they reset sim said sim was fine, I bought a new one from their company, bought another year subscription and I thought it was working fine, support transferred the additional time to the new sim for me which was nice... overall however the sims must just not get the service in my area like the used to because it is still not working... Wasted like $60.. and had to swap over to eiotclub sims that are working great... shame because eiotclub is a lot more expensive for their plans. buyer beware some areas dont have best coverage I suppose... worked originally for 3 months, now it won't.

I ordered this SIM card for my RaceCapture motorsports telemetry system. It’s a great option for the low data, sporadic usage we need and being able to connect to whatever network is best at different tracks is a huge benefit. When it wasn’t working the support team bent over backwards to help make it work and it turns out I didn’t have the SIM card seated properly in my device. Its working flawlessly and is very easy to setup and add data to if needed, the yearly costs are very low and perfect for our needs of 2-3 races a year with just a few hundred mb data per event. We are very pleased and impressed by the incredible customer support! I added a photo of our setup Incase any other RaceCapture users want to give it a shot. Just apply these settings and make sure the SIM card is installed properly and it should work just fine.