[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] recklessabandon:
About a month ago, I took the sim & memory tray from my Poco X3 NFC and put it in my old Poco F1, this is a routine thing for me and I only did it to make sure the F1 was backed up and then I was going to wipe it and sell it on ebay. This is a routine thing for me and for the 1st time ever, I got a message on the F1 saying service was denied and that I sholuld follow a link to buy a new phone. Both of these phones are unlocked international versions and both have been used on ATT for many months, the F1 for years. This was the 1st time I got a denial of service on the F1. I ignored the message as I wasn't going to use the F1, but when I put the tray back in the X3, I got the same denial of service and "buy a new phone" message. I called 611 and complained that the X3 was new, since nov 2020, and it should be allowed service until their annonced network change of dropping 3g which is supposed to Feb 2022. They protested but eventually made the X3 work, I thought. Later I found my Google Keep notes has disappeared, Google had autofill info for me current as of 2018 and Google find phone only listed two phones, the F1 and a very very old Samsung. The X3 and a very old LG phone which I've lost and had wipped by google lost, but don't remember if I deleted it from google. And it got weirder. Amazon on my computer or on the phone trhu crome said I had no activity since 2018.. The amazon app showed my real activety and would partially allow a refund process. But when I tried to print the return data, I got an error that the order was from a different account. I called Amazon and got a bewildered agent who eventually verified my problem but had no soulution. I also opened a problem with Google one that also went nowhere. I called 611 and got a very stupid agent who insisted all IMEI's must start with 3, so I was reading my wrong, and it was not easy to get to a level two person who immediately agreed to type in the IMeI of my x3. That they did this was verfied by dialing *#06#. But this didn't fix google or amazon. I had previously tried to get a new sim from the local store but was denied the sim although I was willing to pay for it. And I had proposed a new sim to previous agents on previous calls and been told it wouldn't help. This time I got right to level 2 who stated that would trigger google and amazon to re-read the IMEI and they put a note in my file that the store should give me a free sim. When I went to store it was a battle but eventually they gave me a new sim, but couldn't activate it as the system didn't like the phone. I went back to 611 and after a lengthy period of time and my telling them that the att rep from their office of the president had told me my X3 would work until Feb when they actually changed the network. This is arbitrary BS on att's part, as the X3 does all forms of LTE and has HD/VOIP capability. It fact, it would be nice phone if Poco didn't think they were Samsung and continually try to shove all their junkware on me. At the store I called 611, at first I got the BS about my IMEI not starting with a 3, and that I didn't know what I was talking about, etc. But finally they agreed to try and would call me back in 30 minutes, an hour later they did not call and the phone was dead. I went to sleep. 8 hours later I had a text from them that my phone could not/would not be activated, but in fact it was activated and google already was "fixed", Amazon took some doing, but, eventually I got it fixed. It turns out both amazon and google tie your account to your devices which are only read when the sim it updated and the sim change notification its broadcast by your carrier. and I had had the same physical sim in 6 phones at least since 2018. And prior to a month ago, I could put it in any gsm phone that worked on a att broadcast band without any problems. So ATT wants to make more profits, probably dreamed up this network change (dropping 3g) as an excuse to implement a policy of allowed phones,, I was told by Sherri Baker from the office of the president of att that existing customers could use their current phones until the network change in Feb (actually I proposed that in writing in an email to her and in our phone conversation and she did not deny it).

“Just because you're paranoid doesn't mean they aren't after you.”​

― Joseph Heller, Catch-22