I don't know if anyone else has been having these issues. But if I'm travelling and driving from one place to another my data ends up going from 4G to 2G mode. And it doesn't come back to 4G even when I'm in a good signal area. Even after turning data off and on it stays the same. You have to reboot the phone to fix this issue.

The signal strength is also very low most of the time. Not sure if it's a phone issue or sim. I used the same sim in another phone and never had any issues.....

Please let me know if you have any ideas.

Thanks