Apple iPhone • Slow or full • 10–20 minutes
Back up your phone and photos — Apple iPhone
Check for a software update
Go to Settings, then General, then Software Update. If one is available, install it first.
Turn on iCloud Backup
Settings, then [your name], then iCloud, then iCloud Backup, turn on Back Up This iPhone, then tap Back Up Now.
Back up photos
Settings, then [your name], then iCloud, then Photos, turn on Sync this iPhone. Your photos go to iCloud, and with Optimize iPhone Storage on, full-resolution photos stay in iCloud while smaller versions stay on the phone.
If it says there isn't enough iCloud space
Free iCloud is only 5 GB. Either buy more iCloud storage, or back up to a computer (next step).
Computer backup
Connect the phone to a Mac (open Finder, select the iPhone, tap Back Up Now) or a Windows PC (Apple Devices app, Back Up Now). If offered, encrypt the backup so it also saves passwords.
Check it worked
Settings, then [your name], then iCloud, then iCloud Backup shows the last successful backup date. If it's old, tap Back Up Now on Wi-Fi.