Home Internet Overheating

I can't speak to your error messages but I can tell you that my device didn't feel hot on the outside and the air was warm and not hot. I've had the fans for a few weeks and had zero issues with my device slowing down or requiring me to unplug/plug-in the device to resolve. If you've got like a small fan you can set the router on for a day or two just to see if it works that would be a worthy troubleshooting option before buying the USB fans several of us have purchased. ¡Buena suerte!

Jlillard, like you, I've found heat buildup to be a big (and maybe the main) issue. I've posted a description of that on another thread but will paste it below for convenience.  In my case I simply placed the gateway on an A/C vent. To what you've said here, I would add that offloading the wi-fi to a separate router, avoiding 5g speeds, minimizing number of supported devices and concurrent usage, problems during big file transfers, can ALL be symptoms of a thermal problem. Add to that the fact that ambient temperatures are on the rise this time of year and….well you obviously get it. Thank you for posting some of the best info I've seen here. Following is that referenced post:

I think it's a thermal issue, and that's likely why T-Mob hasn't fixed it. My gateway had required a reboot almost daily. It behaved similarly to other accounts here in that my connection speed would drop to almost nothing (say 400kbps down) which to a person used to over 50mbps would look like a hard crash, but I haven't seen that yet. My best speed is 60mbps down and I'm delighted if I can sustain 10. Per speedtest, when the problem manifests I see a slight increase in latency but a massive increase in packet jitter, sometimes approaching a full second. Rebooting the gateway clears this condition. Now, thanks to a couple of astute posts here, I decided to test the heat theory. Placing a hand over the unit during normal operation I didn't detect much heat coming out, but when I placed it over an A/C duct directly beneath the sill it had been on, I felt a gush of almost hot air come out the top. This is extremely suspicious and tells me that the convective cooling the EE's had counted on isnt happening.  My gateway hasnt required a reset since i moved it to the top of that a/c vent 4 days ago. There's probably a good reason the installation manual mentions not placing the gateway in direct sunlight and I wonder if the manual's been edited in that regard. I hope others here will replicate and report the heat test. Perhaps then T-Mob will stop stonewalling this issue.

@jlillard, I didn't phrase that well and see no edit function here. Rather than pushing the hardware at higher speeds being a "symptom" of a heat issue, what I meant to say was that if the gateway performs better/longer when you offload some function like wi-fi routing or slow down the data transfer speed, this can be indicative of a heat problem with the hardware.

@jlillard I’ve created a new discussion on the heating issue you steered me to at

I Thought I'd post it under your thread as others might look here. Thank you for first tipping us off on the thermal connection.

@Farjohn I just replied to your other thread and referenced my own before noticing you had posted here first.  :)  I don't want to take credit for discovering the heat issue.  Someone else mentioned it on another thread and referenced a thread on Reddit which is where I first saw the suggestion.

I have my home internet and it gets extremely hot why is that

There *is* at least one temperature sensor and that’d definitely be great to add to the status on the mobile app and web UI for the device.

The manual has alerts for “HighCPU Temperature” and “ModemHighCPU Temperature”

I don’t see a way to actually see the alerts other than scrolling through the tiny screen options on top of the router so that’s not ideal but might show if the temps were actually ‘high’ according to whatever definition is used.

Have not had resets, but noticed gw gets very warm, so suggestion of case fan sounded good. Then noticed my air purifier from Costco which is very quiet. Built a stand out of coroplast (yard sign) since it is slanted at the vent with a hole to push the air through the gw. If turn off purifier for half hour, gw gets very warm again. Using wi-fi in gw router since better than my old one. The passive cooling just is not enough for many cases. I have a case fan from a PC build and know how noisy it can be, so the air purifier is quieter. See what you got. Ikea and other stores have something similar. 

     The purifier is 20 inches tall so the gw is higher which is better for the signal. I am pretty lucky living in a college town with good towers so get two to three bars of b66 and n41. Speed varies between 40 and 340 but usually over 150, often 270. Netflix runs smooth even with other streaming devices going. Usually have less than 20 wi-fi devices connected.

     Now I can cancel Cox Cable which is raising the price again. Due to price last year had to downgrade Cox plan to 50 mbs and was only getting 35 to 40. I feel lucky that I now have a choice! Hope my shift to T-Mobile will support development and deployment of Home Internet to rural areas where there is not much choice. 

     The app and the web gui for gw could use some work, but it is still early days. Would like to have more detail of the connected devices of wi-fi and more settings. But understand need to keep things easy to setup. The guys at the local store were very helpful getting my Sprint migration done and Home internet ordered over phone.

I’m going to try putting my gateway on top of this:

https://smile.amazon.com/gp/product/B08ZV6H6MX/ref=crt_ewc_img_huc_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

so far two other modems have gone toes up

I checked this third modem with IR thermometer and top was 230F

added fan to bottom and temp dropped to 150F

nothing electrical is going to survive at 230F especially radios