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The Puffin Smart 36GB/12-month Data Only SIM card offers robust 5G/4G LTE connectivity on AT&T and T-Mobile networks, covering the US, Canada, Mexico, and most of Europe. Designed for unlocked devices like security cameras, GPS trackers, and hotspots, it intelligently switches networks to ensure reliable service even in remote locations. With flexible data plans, easy activation, lifetime warranty, and dedicated customer support, it’s the ultimate solution for professionals demanding seamless, no-fuss connectivity.









| ASIN | B0C9K5VLH7 |
| Best Sellers Rank | #11,562 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #23 in Cell Phone SIM Cards |
| Brand | Spectrum Smart |
| Cellular Technology | LTE |
| Customer Reviews | 4.0 out of 5 stars 756 Reviews |
| Item Weight | 3 Grams |
| Manufacturer | Spectrum Tracking INC. |
| Number of Items | 1 |
| Service Provider | AT&T and T-Mobile |
| Smart Home Compatibility | Not Smart Home Compatible |
| UPC | 197644272914 |
| Warranty Description | lifetime |
D**.
Fantastic SIM Card Purchase!
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!
C**E
Puffin Smart Data Only SIM Card
I recently purchased the Puffin Smart Data Only SIM card to use with my new Reolink Go PT outdoor security camera, and I couldn't be happier with its performance. Setting up the SIM card was a breeze – it was activated in minutes, and I had my camera up and running in no time. Here's why I give it 5 stars: Seamless Connectivity: The Puffin SIM card provides reliable 4G LTE connectivity, ensuring my camera stays connected and I receive real-time alerts without any interruptions. Affordable Data Plans: Puffin offers flexible and affordable data plans specifically designed for security cameras. I no longer have to worry about overage charges or complicated contracts. Excellent Coverage: I live in a rural area with spotty cell service, but the Puffin SIM card has provided consistent coverage where other carriers failed. Easy to Manage: The Puffin website and app make it easy to monitor data usage, renew my plan, and manage my account. Great for Reolink Go PT: This SIM card is the perfect solution for the Reolink Go PT, which requires a data-only plan for its 4G LTE connectivity. Overall: The Puffin Smart Data Only SIM card has been an excellent investment for my Reolink Go PT camera. Its reliability, affordability, and ease of use make it a must-have for anyone with a cellular security camera. I highly recommend it!
V**V
Automatic selection of the strongest cellular network and flexible data plans
I needed to install a couple of security cameras at a property in a rural area. I needed a strong reliable connection but one where I would only have to pay for the data I used, since I was only expecting a couple of security images a day and an occasional pick at the property. It was not worth setting up a cable or a fiber connection with such a limited data usage. After extensive online research, I came across this card that provided a perfect solution for me. It has a wide range of reasonably priced plans. Regarding the strength and reliability, since I was not sure, which network was the strongest in that area, I figured this card pretty much covers all of the main network options and it would pick the best one, and it did. I plugged it into a NETGEAR Nighthawk M6 Pro mobile hotspot (also from Amazon: https://www.amazon.com/dp/B0CBSWB8L2?psc=1&ref=ppx_yo2ov_dt_b_product_details). It worked perfectly. The Internet speed test showed "Your internet connection is fast". I hooked up a couple of wifi cameras (https://www.amazon.com/dp/B0CVX3F1KW) to the hotspot and the whole system has been working nicely since then. I had a slight issue activating my SIM card because the verification email ended up in the "Promotions" folder rather than in the main inbox. Before I realized it, I contacted the customer service and they replied instantly addressing my issue. To summarize, to my surprise, there were no issues with the setup and everything worked as described and how I imagined it. So, well-deserved 5 stars.
M**R
It connects data only/no voice to T-Mobile, Verizon, and AT&T
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.
S**M
Highly Recommended if you need Best 5G Network and Wide Coverage Best 5G DATA SIM
I use a BlackVue DR970X-2CH LTE Plus (NA) dashcam that takes a SIM card, and I specifically needed a data-only SIM with wide coverage and a cost-friendly plan. I spent a lot of time researching different SIM providers and networks, and that search ultimately led me to the Spectrum Smart SIM. I've been using it for 6+ months now, and it has been a solid experience. My previous SIM only supported 4G, but Spectrum recently sent me an upgraded SIM that supports 5G, which was a nice improvement. On top of that, their data plans are now more competitive than what I was seeing elsewhere. The best part is the coverage. The 5G SIM works with T-Mobile and AT&T, depending on the area, and it automatically connects to whichever network has the best signal. That has made a noticeable difference for me, especially when driving through remote areas-it's reassuring knowing the SIM will switch to the strongest available network instead of getting stuck on a weaker one like some other providers. The setup was also straightforward. Activation was easy, and the only manual step was entering the APN settings, which took just a minute. After that, it worked right away.If you're using an LTE/5G dashcam and want a reliable data-only SIM with strong coverage and flexible plans, this has been an excellent option for me so far. Customer Support: Excellent Customer Support, Prompt Next Hours email Reply and very helpful, which I've never seen in other Services.
F**1
Great Deal, Good Support, and Works on my Laptop SIM Card Slot!
Had some trouble setting it up on my Laptop with a SIM slot. After a few days of working with their support, it turns out it was on their end. They admitted their mistake, and promptly fixed it. Now my laptop is online and working great, so I'm ready for no Wifi now with built in cellular in my Laptop. Very happy so far, only thing that could have been better was the activation issue on their end, but it was resolved after a few days. Seems like a great deal at a great price.
A**C
Doesn't work in Mexico
Worked great in the USA. Not at all in Mexico. Tried everything and customer service was great. They refunded untouched data plan.
D**N
Love this SIM card for my DMD2 Tablet
I purchased this SIM card and am thrilled with its performance. I am an adventure motorcycle rider and use a DMD2 tablet for navigation and other app specific access in remote areas which are not always available with my normal phone. This SIM card continues to provide reliable data connectivity, working flawlessly in areas where my phone service struggles, making it ideal for tablets, game cameras, or similar devices. The setup was pretty straightforward with clear instructions included. The seller’s communications were professional and helpful, ensuring a smooth experience without needing direct contact. I highly recommend this SIM card for anyone needing dependable data for their devices. Great product and experience!
Trustpilot
4 days ago
1 month ago