Can't switch phone from 4g/LTE to 3g after update
My iPhone 8 received the update 15. 4. 1 just recently and since then there doesn't appear to be any way to switch my phone from 3g to 4g/LTE. Prior to the update I could go into settings, then cellular, then cellular data options, then voice & data and select what I wanted. Now there is no "voice & data" option so I can't change this setting anymore. I realize that 3g is going away so maybe that's why this option was removed but on my carrier Verizon 3g is not going away until December 31, 2022.
My problem has been when I am home I get a very marginal signal in 4g where the call quality isn't the best (1 or 2 bars) which causes the person I'm talking to voice to go in and out. I tried switching my phone to "Wi-Fi Calling" but that only kicks in if the signal gets really bad there wasn't anyway for me to force my phone to actually use "Wi-Fi Calling" unless I changed my phone to 3g and then the signal would be so bad it would actually use my Wi-Fi and then I would change back to 4g/LTE when I was away from home. This was the only way I could get good call quality when I was at home but now it's not showing anyway to change this setting.
So my questions are:
1.) Is there some alternate way to switch from 3g to 4g/LTE or vice versa on my iPhone after this update?
2.) Or is there some other way to force my phone to actually use my Wi-Fi for calling when I am at home? (again I have the Wi-Fi Calling enabled my phone just doesn't use it with my marginal signal).
3.) Since I was at home and my iPhone was in 3g mode when the update took place is my phone stuck in 3g mode now?
iPhone 8, iOS 15