Device Guides
Apple iPhone 6
Change device
iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.
How to
Set default email account
If you've set up more than one email account on your mobile phone, you can select a default email account. When you send an email from one of your mobile phone's applications, the default account will be used unless you're asked to select an account before sending the email.
List view
Find "Default Account"
Tap Settings.
Tap Mail.
Tap Default Account.
Select default email account
Tap the required email account to select the email account as your default account.
Return to the home screen
Tap the Home key to return to the home screen.