Back up your device
You can automatically back up your mobile device with Google One so that you have another copy of your photos, videos, messages, and other items in the cloud. To get your data back when you get a new device, restore from your backup.
Note: You can also start and manage backups through your device’s Android Settings app.
Android ComputeriPhone & iPad
Where your phone data is stored
Backups are uploaded to Google servers and they're encrypted with your Google Account password. For some data, your phone's screen lock PIN, pattern, or password is also used to encrypt your data so it can be backed up safely.
Your backup data (except what you back up to Google Photos) is erased if:
You don't use your device for 57 days
You turn off Android backup
What gets saved with Backup by Google One
App data
Call history
Contacts
Settings
SMS messages
Pictures and videos
MMS messages
Check backup details
You can check what data and which apps are included in your backup.
On your Android phone, open the Google One app .
At the top, tap Storage.
Scroll to the device backup section.
If this is your first phone backup: Tap Set up data backup.
If this isn't your first phone backup: Tap View details.
To see your backup settings, tap Manage backup.
Turn on automatic backups
You can set up your phone to automatically back up your files.
On your Android phone, open the Google One app .
At the top, tap Storage.
Scroll to the device backup section.
If this is your first phone backup: Tap Set up data backup.
If this isn't your first phone backup: Tap View details.
To see your backup settings, tap Manage backup.
Choose your backup settings.
If you get advice to install an app, update an app, or change your settings, follow the onscreen steps. Then, go back to the Google One app to finish.
If asked, tap Allow permissions.
At the top left, tap Back .
Your Google One backup can take up to 24 hours. When your data is saved, "On" will be below the data types you selected.
Start or stop a backup
After you choose your backup settings, you can decide to start a backup right away. You can also turn off automatic backups at any time.
Start a backup
On your Android phone, open the Google One app .
At the top, tap Storage.
Scroll to the device backup section.
If this is your first phone backup: Tap Set up data backup.
If this isn't your first phone backup: Tap View details.
To see your backup settings, tap Manage backup.
Tap Back up now.
Stop future device backups
On your Android phone, open the Google One app .
Scroll to the device backup section and tap View details.
Turn off the types of data which you don’t want to back up.
Get your data onto a new phone
Your photos and videos are already available in Google Photos. But you can restore the rest of the data you backed up while you set up your new phone for the first time or after a factory reset. At setup, to restore your data, follow the on-screen steps.
The process can take up to 24 hours.
Delete your data backups
If you turn off Backup by Google One on your device, your backups are deleted. Photos and videos that you previously backed up remain saved in Google Photos.
If you don't use your device for 57 days, the data you backed up (except photos or videos) is also erased.
Fix problems with backup
You can't start the backup process
You can’t find everything you backed up
You got an error when you backed up your phone
You can't find photos or videos in your device's photo gallery or when you try to upload to social media
Fix problems with restore
You can't start the process to restore
Your new phone didn't restore everything
mgee73
commented
2 years ago 
Back up your device You can automatically back up your mobile device with Google One so that you have another copy of your photos, videos, messages, and other items in the cloud. To get your data back when you get a new device, restore from your backup.
Note: You can also start and manage backups through your device’s Android Settings app.
Android ComputeriPhone & iPad Where your phone data is stored Backups are uploaded to Google servers and they're encrypted with your Google Account password. For some data, your phone's screen lock PIN, pattern, or password is also used to encrypt your data so it can be backed up safely.
Your backup data (except what you back up to Google Photos) is erased if:
You don't use your device for 57 days You turn off Android backup What gets saved with Backup by Google One App data Call history Contacts Settings SMS messages Pictures and videos MMS messages Check backup details You can check what data and which apps are included in your backup.
On your Android phone, open the Google One app . At the top, tap Storage. Scroll to the device backup section. If this is your first phone backup: Tap Set up data backup. If this isn't your first phone backup: Tap View details. To see your backup settings, tap Manage backup. Turn on automatic backups You can set up your phone to automatically back up your files.
On your Android phone, open the Google One app . At the top, tap Storage. Scroll to the device backup section. If this is your first phone backup: Tap Set up data backup. If this isn't your first phone backup: Tap View details. To see your backup settings, tap Manage backup. Choose your backup settings. If you get advice to install an app, update an app, or change your settings, follow the onscreen steps. Then, go back to the Google One app to finish. If asked, tap Allow permissions. At the top left, tap Back . Your Google One backup can take up to 24 hours. When your data is saved, "On" will be below the data types you selected.
Start or stop a backup After you choose your backup settings, you can decide to start a backup right away. You can also turn off automatic backups at any time.
Start a backup On your Android phone, open the Google One app . At the top, tap Storage. Scroll to the device backup section. If this is your first phone backup: Tap Set up data backup. If this isn't your first phone backup: Tap View details. To see your backup settings, tap Manage backup. Tap Back up now. Stop future device backups On your Android phone, open the Google One app . Scroll to the device backup section and tap View details. Turn off the types of data which you don’t want to back up. Get your data onto a new phone Your photos and videos are already available in Google Photos. But you can restore the rest of the data you backed up while you set up your new phone for the first time or after a factory reset. At setup, to restore your data, follow the on-screen steps.
The process can take up to 24 hours.
Delete your data backups If you turn off Backup by Google One on your device, your backups are deleted. Photos and videos that you previously backed up remain saved in Google Photos.
If you don't use your device for 57 days, the data you backed up (except photos or videos) is also erased.
Fix problems with backup You can't start the backup process You can’t find everything you backed up You got an error when you backed up your phone You can't find photos or videos in your device's photo gallery or when you try to upload to social media Fix problems with restore You can't start the process to restore Your new phone didn't restore everything