Device operating basics
Date and time
When you first start the tablet it might be set up with an incorrect
date. It should be set, as invalid date can cause problems with
logging into your account, inability to use the Play Shop and other
problems using applications.
To set the date, go to Settings, then Date & time.
First of all select the correct time zone. If the automatic date and
time setting is still not correct you need to manually set the
date and time.
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