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I am using a OnePlus 6, still working perfectly fine, supports 4G and VoLTE ("HD Voice")[+]. AT&T kicked it off their network because it is not on their whiteli

I am using a OnePlus 6, still working perfectly fine, supports 4G and VoLTE ("HD Voice")[+]. AT&T kicked it off their network because it is not on their whitelist (The OnePlus 6T is). They sent me a branded LG Prime 2 as a replacement of a "equivalent" phone. It is actually a budget phone, not supporting 5G, and not even on AT&T's approved devices list (it seems they added it now, but last year it wasn't). Forum users reported that customer service can whitelist an IMEI. They did not for me. So I switched to the T-Mobile network. From my international SIM now I get a message from their roaming partner AT&T saying that voice calls will not work. T-Mobile is sunsetting 3G as well in July 2022, they sent me a text saying that they "think" that my phone is compatible. The decision of AT&T to not support my phone is not technical. [+] It has 2 SIM card slots, something that seems to be impossible to get in the US. I think only one of the 2 slots fully supports LTE.

joecool1029 4y ago
>[+] It has 2 SIM card slots, something that seems to be impossible to get in the US. The 6T and 8T has 2 SIM slots in their retail unlocked versions. T-Mobile 6T and 8T versions can be flashed to this config (but you will need to buy a new sim tray to hold both cards). It's also pretty common now to see phones that have esim and a single sim slot in the US.
username190 4y ago
> I think only one of the 2 slots fully supports LTE. Both of the slots support LTE; OnePlus has made some frustrating power saving decisions though, which force the secondary (non-active) SIM to 3G when it's not in use. This can be disabled (at least on my 7 Pro running Android 10) via logkit following these steps[0]. Once disabled, the phone will fully support VoLTE on both SIMs. [0] https://forums.oneplus.com/threads/dual-4g-networks-setting.876850/#post-19413403 https://forums.oneplus.com/threads/dual-4g-networks-setting....

joecool1029 4y ago

>[+] It has 2 SIM card slots, something that seems to be impossible to get in the US. The 6T and 8T has 2 SIM slots in their retail unlocked versions. T-Mobile 6T and 8T versions can be flashed to this config (but you will need to buy a new sim tray to hold both cards). It's also pretty common now to see phones that have esim and a single sim slot in the US.

username190 4y ago

> I think only one of the 2 slots fully supports LTE. Both of the slots support LTE; OnePlus has made some frustrating power saving decisions though, which force the secondary (non-active) SIM to 3G when it's not in use. This can be disabled (at least on my 7 Pro running Android 10) via logkit following these steps[0]. Once disabled, the phone will fully support VoLTE on both SIMs. [0] https://forums.oneplus.com/threads/dual-4g-networks-setting.876850/#post-19413403 https://forums.oneplus.com/threads/dual-4g-networks-setting....