3G allows for work and entertainment anywhere.
Steps for 3G setup on Xiaomi Mi A1:
Step 1: Turn on mobile data.

Enable mobile data in settings.
If the network is still inaccessible, the issue might be the absence of APN settings. Proceed as follows:
Step 2: Go to 'Settings' and select 'Add'.

Select 'Add'.
Step 3: Select 'Mobile network'.

Select 'Mobile network'.
Step 4: Select 'Access Point Names'.

Select 'Access Point Names'.
Step 5: Tap '+' to add a new APN.

Tap '+' to add a new APN.
Step 6: Enter your carrier's APN settings and save.

Enter your carrier's APN settings.
Tip: APN information, usernames, and 3G connection passwords for Vietnamese carriers.
VinaPhone:APN: m3-world Username: mms Password: mms
Mobifone:APN: m-wap Username: mms Password: mms
Viettel:APN: v-internet Username: (empty) Password: (empty)
VietnamMobile:APN: Internet Username: (empty) Password: (empty)
Following these steps, we've successfully set up 3G on the Xiaomi Mi A1. Wishing you success in your setup.
