I have a similar issue on my S10 5G on T-mobile. I cannot get LTE speeds or connection when set on 5G/LTE/3G/2G automatic model It iwll not default to anything but 2G and has no data. I have to manually switch the phone to the LTE/3G/2G mode for it to get high speed data. Both T-mobile and Samsung do not have a fix. T-mobile told me to return the phone for a refund if I am not happy. She seemed to admit it is a Samsung problem that needs a software or firmwae update that might not come for months. Very sad to see on such an expensive phone
I've noticed a few network issues with the s10 5g. First issue is that it switches to 1x when connected to wifi, which is not a big deal unless you disconnect from wifi, then it takes a little bit to find 3g-4g. Next issue, is that it has a hard time finding 4g LTE. My wife's phone will state 4g LTE, but mine will be at 3g. Also, have noticed it switch when on a call to 1x. Anyone else having these issues, kind of frustrating.
... View more