So my gf and I both have the Xiaomi Mi A2, her works perfectly, but when I tried to setup mine, I realized I had no data connection.
In order to make it work with my provider, I must configure a new custom APN but for some reason, the button to add a new one is missing. I´ve checked, however, my gf's mobile, despite being apparently the same in every aspect, she has such button.
Then I thought there must be some differences between both devices operating system's version, so I wonder if is there a way to compare both to check what I'm missing in order to have the option that I need?
If not, any way to fix this would be really appreciated. Thank you in advance
*#*#4636#*#*
from your phone app, you will get a menu where first item is phone info. Tap the 3 dots menu on top right which has "enable data". Try that or by toggling carrier info in the menu and see if it helps. Factory reset is always an option but ideally if nothing else works