7 things to do before selling the iPhone

1. Make a backup: Connect your phone to your computer via USB, go to iTunes and select your device from the list, then click the "Create backup now."
2. Remove all photos. If you have a computer with MacOS, connect your device, go to the app "Photo", select the photos you want and click "Import selected." After importing, click "Remove photos from your iPhone». If you have the Windows, connect the device to your computer, go to "Start» → «Photos» → «Import» → «from USB-devices," then follow the instructions. Do not forget to put a tick next to "Remove photos from your device after they are imported."
3. Turn off iMessage: open the application "Settings» → «View» → «iMessage» → «Off».
4. Turn off the FaceTime: open the application "Settings» → «FaceTime» → «Off».
5. Disconnect your account iCloud: open the application "Settings» → «iCloud» → «Exit».
6. Exit the Apple ID: Open the "Settings» → «iTunes Store and App Store» → click «Apple ID» → «Exit».
7. Restore factory settings: open the application "Settings» → «Basic» → «Reset» → «Erase All Content and Settings."

A few last tips

Tip number 1

Do not remove the manual contacts, calendars and reminders until you came out of the account iCloud account. This can result in data loss on the servers iCloud and devices connected to iCloud, for example, on your iPad.

Tip number 2

If the phone is dead at the time of restoring the factory settings, use iTunes to delete the data. Connect the device to your computer, and then restore the backup. Put the phone on charge, open the "Settings» → «Basic» → «Reset» → «Erase All Content and Settings."

Tip number 3

You can erase the data on your iPhone remotely. If you set up Find My iPhone, go to the website iCloudAnd then click "All Devices" and select the smartphone. click "Erase iPhone» The information window. To confirm the password will be required from the Apple ID.

see also

• How to reset the iPhone or iPad to factory settings →
• 6 things you need to check before you get rid of the smartphone →
• How to prepare smartphone Trip →