How do you back up a phone?
To back up a phone, turn on the built-in backup: iCloud Backup on iPhone or Google One backup on Android. Then turn on photo backup in iCloud Photos or Google Photos, because photos are handled separately. Finally, keep a second copy on a computer or drive. Backups run nightly when the phone charges on Wi-Fi.
Your phone probably holds more irreplaceable data than your computer: photos, chats, contacts and two-factor apps. This hub explains how to back up phone data on both platforms, and links to step-by-step guides for each task.
| Data | iPhone | Android | Extra step needed? |
|---|---|---|---|
| Settings and apps | iCloud Backup | Google One backup | No |
| Photos and videos | iCloud Photos | Google Photos | Turn on separately |
| Contacts | iCloud Contacts | Google Contacts | Check account sync |
| SMS and MMS | iCloud Backup or Messages in iCloud | Google One backup | No |
| WhatsApp chats | WhatsApp’s own iCloud backup | WhatsApp’s own Google Drive backup | Yes, inside WhatsApp |
| Authenticator codes | App-specific | App-specific | Yes, check each app |
What do you need before you back up a phone?
You need your Apple ID or Google account password, Wi-Fi, a charger and enough cloud space. Most failed phone backups I see come from storage running out, not from settings.
- Check free cloud space. iCloud gives 5 GB free and Google gives 15 GB shared.
- Update the phone’s operating system.
- Turn on two-factor login for your account.
- Note which apps keep their own backups, such as WhatsApp and Signal.
Back up an iPhone in five steps
- Open Settings, tap your name, then iCloud.
- Tap iCloud Backup and turn on Back Up This iPhone.
- Go back to iCloud, tap Photos and turn on Sync this iPhone.
- Tap Back Up Now while on Wi-Fi to run the first backup.
- For a free local copy, also back up to a Mac or PC with a cable.
Full details are in our iPhone back up guide, and the iCloud backup review explains limits and privacy.
Back up an Android phone in five steps
- Open Settings, then Google, then Backup. Names vary slightly by brand.
- Turn on Backup by Google One.
- Open Google Photos, go to Photos settings, then Backup, and turn it on.
- Tap Back up now in the Google backup screen.
- Check WhatsApp and other apps for their own backup settings.
The full walkthrough is in back up Android phone. Our backing up data on Android guide covers contacts, messages and apps in more depth.
Grab the free one-page 3-2-1 checklist so you can confirm every copy, every schedule and every restore test. It arrives by email in a minute.
Get the free checklistWhat does built-in phone backup miss?
Built-in backup misses more than people expect. Google’s Android backup covers apps and app data, call history, contacts, settings and SMS, but photos need Google Photos. Apple’s iCloud Backup excludes data already synced to iCloud, such as photos in iCloud Photos.
- Some apps opt out of system backup, including some banking and authenticator apps.
- WhatsApp and Signal use their own backup systems.
- Downloaded music and videos usually need re-downloading.
- Files saved in app-only folders may not be included.
Should you also back up your phone to a computer?
Yes, if you can. A computer backup is free, works without internet and gives you a second copy. On iPhone, Finder or iTunes can save a full encrypted backup. On Android, you can copy photos and files over USB.
See our guide to back up from phone to computer. For drive options, see phone backup storage.
Common phone backup mistakes
| Mistake | Result | Fix |
|---|---|---|
| Backup on, photo sync off | Photos not saved | Turn on Google Photos or iCloud Photos |
| iCloud full | Backups stop | Check cloud storage and upgrade |
| WhatsApp not backed up | Chats lost on new phone | Turn on chat backup in WhatsApp |
| Authenticator not exported | Locked out of accounts | Use cloud sync or save recovery codes |
| Phone never left on Wi-Fi overnight | Backup never runs | Charge on Wi-Fi at night |
How to verify your phone backup
Check the last backup time in settings. It should be within the last day. Then open photos.google.com or icloud.com on a computer and confirm recent photos appear. Our guide on checking if your phone is really backed up shows each screen.
More phone backup guides
- Backup cloud Android: cloud settings only
- Phone to phone backup: moving to a new phone
- Cloud storage for phone: best apps compared
- Best back up phone apps: our ranked list
- How to back up contacts on Android and iPhone
- Phone storage full? Free space without losing files
Frequently asked questions
How long does it take to back up a phone?
The first backup can take from minutes to several hours, depending on how much data and how many photos you have. Photo uploads take longest. Later backups only save changes and usually finish overnight without you noticing, as long as the phone is charging on Wi-Fi.
What do I need before I back up my phone?
You need your Apple ID or Google account login, Wi-Fi, a charger and enough cloud storage. Update the phone’s software first and turn on two-factor login. Also check which apps, such as WhatsApp, need their own backup turned on inside the app.
What are common mistakes with phone backup?
Common mistakes are forgetting to turn on photo sync, running out of cloud space, ignoring WhatsApp’s separate backup and not saving authenticator codes. Another is never checking the last backup date. A quick monthly check catches most problems before you need the backup.
Does my phone back up automatically?
It can. iPhones back up to iCloud automatically when they are charging, locked and on Wi-Fi, if iCloud Backup is on. Android phones back up to Google automatically under similar conditions when Backup by Google One is on. Photo backup must be turned on separately.
Can I back up my phone without the cloud?
Yes. You can back up an iPhone to a Mac or Windows PC with a cable, and copy Android photos and files to a computer over USB. A phone flash drive also works. A local backup is free but does not protect you if the computer is lost too.
Our Start Here guide shows the three steps every setup needs, in plain English. Cannot find a guide for your phone, app or drive? Request a guide and we will write it.
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