Erratic 5G, phone getting hot

[xxxJDxxx]

I've been working in Kamloops BC for the week. I noticed last night that my connection was extremely slow to the point of barely functioning. My widgets wouldn't load data and websites would take several minutes to fully load.

While this was going on my phone was getting quite hot. Not unbearably hot or anything, but hot enough that it seemed unusual and it was burning through battery life quite quickly. 

I noticed today that my phone was jumping onto and off of 5G. This seemed to be happening all over town and WAS NOT specific to one location. I decided to try turning 5G off in my phone's settings and viola! The connection worked again immediately and the phone started cooling down. 

This was an iPhone 12 pro FWIW.  Is there an issue with the 5G network? Is it specific to this area? This has never been an issue for me at home or in other cities I've traveled to, my phone will simply revert to LTE when the 5G signal isn't strong enough. 

[xxxJDxxx]

Just to reiterate this was not specific to one location. I've been all over this city and the issue has persisted. I mentioned that specifically because being on the fringe of service was the first thing that came to mind but that wasn't the case. 

[Handy1]

@xxxJDxxx  It well known 5G is a bigger battery drain and will cause the phone to run warmer . But you did the right thing just pick and choose which nets room gives you the best signal 

[dust2dust]

While it's nice to use the capabilities of the phone to their maximum, you can get the same speeds on LTE anyway. So it sounds like the system didn't want to let the phone drop down to LTE. I've had something like this in the US while roaming before volte, after no 3G. In one area it would drop down to 2G GSM. In another area I had to manually change it.
So in your case I guess the 5G signal is weak and the phone was struggling to keep a hold of it and thus got warm and erratic performance for it's efforts.

[xxxJDxxx]

^That's what I did, but it was never a problem until yesterday. I've been running in 5G with acceptable battery life and without my phone getting hot since it was first enabled on the public network. I find it strange that I'm suddenly having this crippling issue. 

[Handy1]

@xxxJDxxx  Put your network to 4GLTE you will still get the 5G speeds and the battery drain won’t be as bad on your phone and cause it to run as warm