How to secure your personal data before giving mobile phone to anyone for upgrade or repair etc

AntiGossip

Senator (1k+ posts)
Its not only Females but males with sensitive data such as business to business deals of daily activity in your city such as :-
rental transactions payment via bank transfer,
purchases of high technology items stored on device via bank transfer,
pictures of any sensitive area
or facility captured and
than handed over to MQM traitors to spy on Pakistani lands.