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T-Mobile not allowing older devices on their network
17 points by anonymousiam 9 days ago | hide | past | favorite | 15 comments
TL;DR: Don't try to BYOD to T-Mobile if your device does not support 5G or 4G-LTE. They will let you do it, but then your nightmare begins.

I wanted to re-activate a 4G (non-LTE) mobile hotspot (ZTE 64) I bought from TM in 2015 and used until 2019. I needed backup Internet for a small project, so I called TM and asked if the ZTE was still supported. They said it was (and did again a dozen different times until today). The guy in the TM shop put in a new SIM and the hotspot worked.

Two hours after getting home, the hotspot died. No bars where five had been, and the display alternating between "No Service" and "Limited Service." After two hours on the phone with TM Support (and re-confirming that the device was still supported on their network), they concluded that the device must be defective. The device was out of warranty, but they offered me a "courtesy" warranty exchange.

Before picking up the replacement, I decided to fiddle with the hotspot. I put the SIM from the hotspot into my iPad and it worked fine. I put the SIM from my iPad into the hotspot and it worked fine too. After swapping them back, everything still worked.

I exchanged my (working) device for a replacement. The technician at the store put the SIM from my old device into the new device and it did not work. He tried a new SIM and that didn't work either. He spent about 45 minutes trying to get it working, but couldn't. He now claimed that the ZTE hotspot was not supported on the TM network. I asked him for my old device back, but he said that he could not return it to me because the exchange had been completed. Frustrated, I purchased a new (Alcatel) 4G hotspot from the store.

The Alcatel hotspot did not play well with the Raspberry Pi target, and being frustrated with my overall experience, I placed the SIM from the Alcatel hotspot into the warranty replacement ZTE (which had not worked at all up to that point). The replacement ZTE hotspot powered up and worked just fine with the SIM that had been in the Alcatel hotspot. I called TM to complain about the bogus service from the store, and to confirm what the technician had said about the device being unsupported. TM again told me that the ZTE was still supported and that the store employee was incorrect. With the ZTE hotspot now working fine, I returned the Alcatel hotspot the next day.

The ZTE hotspot worked for a week, but this morning was back to being dead. I needed backup Internet so I phoned TM Technical Support again. I spent another frustrating 2.5 hours on the phone with them and we were off their troubleshooting chart. They claimed a weak signal, but it had five bars when working. They claimed the device was broken, but it was behaving exactly as the old one had. I tried swapping the SIM with a new one, but no change. Manually scanning available networks showed it could see the network, but attempts to connect resulted in a "Failure" message with no explanation. The "Failure" message was an affirmative response from their network, and not a timeout or link problem. I pressed the issue and the technician finally came up with a "Service Bulletin" that he had not seen before. It said; After August 1, 2021 TM will not allow adding a non-5G or LTE device to their network. Devices added before 8/1/2021 will continue to work, but older devices were no longer to be added to the network. If I had added my device a week earlier, none of these problems would have occurred.

It really sucks that a business decision (implemented with a poor background checker/dumper task) prevented me from using a perfectly good device (that TM itself had provided to me only days before) on their network, which is perfectly capable of supporting it. It also sucks that the device was exluded from the network without any explanation. It seems that TM wants to require customers to buy new equipment for no good reason other than for them to make some extra cash. I wonder about the legality of this.






First, "4G" non-LTE is actually 3G.

T-Mobile's 3G network will shut down on October 1st, around two weeks from now. For obvious reasons T-Mobile doesn't want you to activate devices that are about to stop working.


A bit more detail, from: https://www.androidpolice.com/2021/08/05/t-mobile-3g-shutdow... (from the update towards the bottom):

T-Mobile is no longer accepting CDMA-only devices and phones without VoLTE as of June 16.

T-Mobile's UMTS 3G network is still scheduled to close down on October 1.

Sprint's legacy CDMA 3G network is set to shut down on January 1, 2022.

Sprint's LTE and 5G network will turn off on June 30, 2022.


I don't have a link handy, but this is also coming soon to Verizon. My little throw-away phone will soon have to be thrown away. Probably important to triple check that this phone isn't used for 2FA anywhere. I believe January according to their support team, but don't quote me on that.

See above where I asked them during each interaction (usually more than once) whether the device was supported on their network. Also note that they replaced my device. Why would they send me a device that would no longer work on their network three weeks later?

Also, after swapping SIMs back and forth with my iPad, the ZTE 64 is once again working. I believe that TM is running a script that checks when the device first joined the network, and how long it's been since the device negotiated a 4G LTE connection. If joined after 8/1/2021 and no LTE for a week, the device is banned. Swapping the SIM into a different (LTE capable) device resets the one week timer.

As an aside, I can see that some of TM's cell sites are still advertising 2G service. Press releases from last year said they would support 2G/3G service until December 2022. Now the press releases are saying they will shut those down at the end of this month.


Also, the ZTE 64 is a 4G LTE device, but even though I bought it from T-Mobile, they are claiming that it will not use LTE on their network. Apparently the frequency bands for their LTE are not compatible with the device. This would not bother me so much if I had not bought the device from them, but I did, and they should support it.

this 4G 5G thing is becoming yet another factor accelerating planned obsolescence

just when we are looking for ways to reduce waste... thanks Biden for doing nothing (dang, I'm not trying to be political... that's just how it works)

I don’t see any real signs that we’re trying to reduce waste. California liberals even want recycling symbols taken off of non-recyclables.

Why was recycling label present on non-recyclables ?

AFAIK the idea was to label different types of plastic and let people figure out how to recycle them later. But it's now decades later and some types of plastic still can't be efficiently recycled.

Most plastic can't be recycled, yep. If it would melt under low heat (plastic bags, food containers, other packaging) it can't be recycled.

HDPE plastic -- the heavy duty stuff? The only truly recyclable plastic.

I throw all plastic that can't be recycled in the trash.


Lack of prevention.

Buy a hotspot from Calyx instead and you'll get 5G/LTE speeds with no caps or throttling on T-Mobile/Sprint

I was getting 300mbit downloads when I was in Chicago with mine a couple weeks ago


Yesterday I ordered a new Netgear Nighthawk MR5200 (5G, Unlocked). They are pricey, but I already have a MR1100 (4G) and I believe it's the best hotspot I've ever used. They say I'll get the new one on Thursday. Hoping that's true.

Makes sense,

I see ads on TV/internet for cheap Wireless deals, i just assume it mean a longer contract/forcing you to buy a pricier phone




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