Band locking is only possible with (ofc non-root method), afaik:

- Samsung Galaxy phones (heard that Samsung began disabling access to band locking, but not completely)
- Almost every phones with Mediatek chipset (needs enabling "Developer options", which may break some apps that don't like that feature turned on)
- Phones with Spreadtrum/Unisoc chipset
- Xiaomi phones (need to access hidden activity stuff, doesn't work in my case)