Can't backup iPhone because not enough free space is available?
If an alert says there's not enough disk space
If a message says there's not enough disk space when you try to back up your device, free some space on your Mac or PC. If you still see a disk-space error after you free enough space, contact Apple Support.
If an alert says that there's not enough iCloud storage
Tap Manage Account Storage or Manage Storage. Tap Backups, then tap the device you're using. Under Last Backup and Backup Size, you can check Next Backup Size. It may take a few minutes for your device to calculate Next Backup Size.
An iTunes backup would be stored in C Drive by default, and usually, you have to leave at least 10GB of free space in C Drive.
- Check your space. To see how much space you are using, enter Settings on your iPhone or iPad, select iCloud, click Storage, followed by Manage Storage.
- Delete old backups. ...
- Change backup settings. ...
- Alternative photo services.
Delete apps from iPhone
To do this, tap and App, then tap Delete App. Handily, this list also details the last time you used each application. So you can easily pick out apps which you've never used, or don't use any more for some easy storage space gains.
On an Android phone, go to Settings > Storage
If you drill down into the category, you can delete individual files or data. For example, under “Audio,” long-press on one or more files and tap Delete. Or under “Apps,” tap the app's name and then Uninstall to remove it from your phone.
- Close apps that don't respond. Android manages the memory that apps use. You don't usually need to close apps. ...
- Uninstall apps you don't use. If you uninstall an app and need it later, you can download it again. ...
- Clear the app's cache & data. You can usually clear an app's cache and data through your phone's Settings app.
You can also delete the files you have stored in iCloud Drive to get more iCloud storage. Go to Settings> Apple ID> iCloud> Manage Storage> iCloud Drive. You will see all the files stored in iCloud Drive. Swipe left and tap on the trash icon to delete the file.
You can free up space on an iPhone by deleting apps, photos, and videos. To free more space on your iPhone, clear Safari's cache and delete old messages. To see how much storage space is left, head to Settings > General > iPhone Storage.
Deleting iCloud backup is not as bad as it sounds. Here are the main points you should know about: It will erase the data you previously backed up to iCloud. So, in case you need to set up your iPhone from scratch, you will not be able to recover data from iCloud.
Why does my phone say not enough storage when there is?
If you're seeing an "Insufficient storage available" message on your Android, chances are that you've used up most of your device's available memory. To fix this, you'll need to make some space by deleting apps and/or media; you can also add external storage, such as a Micro SD card, to your phone.
Free up space with Disk Cleanup
If your system doesn't have Storage Sense, you can use the Disk Cleanup tool to delete temporary files and system files from your device. In the search box on the taskbar, type disk cleanup, then select it from the results. Select the drive you want to clean up files for, then select OK.

If you've deleted all the files you don't need and you're still receiving the “insufficient storage available” error message, you need to clear out Android's cache.
You cannot buy more storage space as the phone will always have the amount of storage space it came with. the only way to gain space is to delete photos, messages, apps, etc.. Be sure to save important photos and data to your comuter or an external drive.
- Close apps that don't respond. Android manages the memory that apps use. You don't usually need to close apps. ...
- Uninstall apps you don't use. If you uninstall an app and need it later, you can download it again. ...
- Clear the app's cache & data. You can usually clear an app's cache and data through your phone's Settings app.