Use the time provided by the carrier network.
1. Go to
Settings > 
Additional settings > Date & time.
2. Tap
to enable Set time zone automatically or Use network-provided time zone based on your models.
Note
If you disable the feature, you can select time zone according to your region.
1. Go to
Settings > Additional settings > Date & time.2. Tap
to enable Set time zone automatically or Use network-provided time zone based on your models.Note
If you disable the feature, you can select time zone according to your region.