Question No 5G after network reset on phone - Samsung Galaxy S21 Ultra

As the title states I have been with Cricket for around 3 months with great 5G service 4 and 5 bars. I was trying to get Wi-Fi calling working and I wasn't aware at the time that Wi-Fi calling isn't available on Cricket BYOD phones yet. I reset the network settings on the phone and now only receive 4G LTE. I've had excellent 5G signal up until the reset. Called Cricket customer service about it but I believe I'd learnt more talking to the wall, very useless support, told me after about an hour that it would pick up 5G again and thats been about a week ago. The settings I have circled in red doesnt allow me to turn on or off, is this normal?? also this is the APN settings im using, they are the only ones I can find on the net so I'm assuming they are correct. Any ideas??? Thanks in advance for any help.
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no internet at work

I arrived at work today all excited, thinking how much fun I will have now that I have my new 3g account. On the weekend I have almost no supervision and plenty of oportunity to get online. Every where else I have been I get full signal for gprs/gsm and umts, at work with 3(three) Australia I got 0 bars umts, if I switched to roaming I got 1 dot for gsm (telstra) that is not good enough to get a useful gprs connection. Disatster!!!! The only place I need mobile internet is the only place I can't get it. I will give it another 30 days and if no luck then goodbuy mobile broadband
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.
I am wondering if telstra next g would have given me better reception? My vodaphone always had good gsm reception there but they do not have good 3g plans at the moment (and I am locked in a contract with 3 now).

Note 5 (SM-N920P) Sprint on AT&T

Got my Sprint Note 5 domestically unlocked and moved over to AT&T, added my new SIM chip, configured the APN correctly and boom, 3g connection with AT&T on top. CAlled AT&T and had them add me EMEI to their system so it will be recognized as a 4g/LTE device, still can't get a the LTE to light up. I turned off mobile data and boom bot a nice fast LTE signal so I know it works. Charged over night and back to a 3g signal, tried everything and can't get it back on a LTE connection. Called AT&T who re-added the EMEI and still nothing. It jumped on an LTE connection 3 or 4 times but nothing stable.
Use
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use samsung phone info app to allow all bands look on youtube for instructions
Sent from my SM-N920P using XDA-Developers mobile app

[Help] Network Issue Redmi 4a

Hi, since i bought this phone i have experienced many issues with the network, many times i have no service, data mobile... then suddenly it comes and leave again. I put my sim on others phones and works well.
i had seen a lot of people with problems in redmi 4a network, but their solutions don't work for me.
i have a 3G data plan, i just have one sim card, i try in both slots but i got the same result.
i try to change "preferred network type" on "testing" and this got better something on the phone but no definitive solution, i just can 2G with no internet..and when i call, the SIM turn to "no service".
i try many combinations but none works.
Help pls...
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Weak or no signals on XZ3

Hi
I am using Sony XZ3 for around 15 months on O2 UK.
For last 4-5 months I am struggling to get good network reception. Changed sim card as well but no luck. I put my sim in my old HTC phone and not had any issues for 2 weeks. What is possibly wrong with the phone or network?
Screen shots attached via Net Monitor Lite app. Why it shows WCDMA connection on LTE or GSM sim?
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Thanks
Same issue. Reception is really bad against other phones.
We need to update the baseband.

VoLTE on any Network?

Hello all,
I recently bought a couple of eBay Seller Refurbished Galaxy S20 FEs to use in my switch to Consumer Cellular (MVNO that runs on AT&T towers). I believe they are from T-Mobile originally. However, with the recent decommissioning of AT&T's 3G network I have begun to have trouble making calls. They just end immediately.
Consumer Cellular advises to enable VoLTE or else calls will stop working, but as far as I can see VoLTE is enabled by default with no settings to be set.
I guess I just want to know if this is something caused by my phones or if it's more likely to be something on their end.
For more information, this is my SIM Card status screen
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Upgrade the SIM to a 4G SIM and try.

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