iPhone Storage Full: Why It Happens and What to Do First
Why your iPhone says storage is full even with iCloud, what stops working, and what to clear first. Plain steps for iOS 27.
Google Photos backs up a copy of your iPhone photos to your Google Account. iCloud Photos keeps one library in step across your Apple devices. For most people who use only Apple devices, iCloud Photos is the simpler choice. Google Photos suits anyone who also uses Android or wants more free storage.
Neither service adds room to the phone by being switched on. iCloud Photos can free iPhone storage through one setting. Google Photos frees it only when you delete the phone's copies, and that delete can reach iCloud if both run together.
Google Photos is Google's photo app and online library. On an iPhone it uploads a backup of your photo library to your Google Account, over Wi-Fi or mobile data. The photos also stay in Apple's Photos app, so you hold two copies: one on the phone and one with Google.
Every Google Account comes with up to 15 GB of storage, shared across Gmail, Google Drive, and Google Photos. Backed-up photos use that allowance at either backup quality.
Original quality keeps the resolution you shot. Storage saver resizes photos above 16 MP to 16 MP and videos above 1080p to 1080p. Once the phone's copy is deleted, that reduced version is the only one left.
iCloud Photos is Apple's built-in service for keeping your library in iCloud and on every device that uses it. Apple's iCloud Photos page says it stores originals at full resolution.
There is no app to install. You turn it on at Settings, then your name, then iCloud, then Photos, by switching on Sync this iPhone.
Apple gives 5 GB free, and that allowance also covers backups, iCloud Drive, Mail, and Messages. It is separate from the phone's own capacity, a split explained under iPhone storage vs iCloud storage.
A sync keeps one library in several places, and a backup adds a second library. Most differences between the two services follow from that.
Google Photos and iCloud Photos differ most on free storage, device reach, and what happens to the copy on your phone.
| Google Photos | iCloud Photos | |
|---|---|---|
| What it does | Backs up a copy to your Google Account | Syncs one library across Apple devices |
| Free storage | Up to 15 GB, shared with Gmail and Drive | 5 GB, shared with backups, Drive, Mail, and Messages |
| Where it works | iPhone, iPad, Android, and computers | Apple devices, iCloud.com, and Windows PCs |
| Photo quality | Original quality or Storage saver | Originals in iCloud |
| Frees phone space | Only when you delete the phone's copies | Yes, with Optimize iPhone Storage |
| Delete on the iPhone | Depends on the app you use | Deleted on every device using iCloud Photos |
| Sharing | Partner Sharing | Shared Photo Library, up to five other people |
| Paid storage | Google One and Google AI plans | iCloud+ |
How much free storage do Google Photos and iCloud offer?
Google Photos and iCloud offer up to 15 GB and 5 GB of free storage. Both figures are account allowances, so email and other files draw on the same space. Past that point, each service needs a paid plan.
These monthly prices were checked on 3 November 2026. Apple's come from its iCloud+ price list. Google's AI plans come from its UK and US plan pages. Its other rows come from the App Store listings for Google Photos in the UK and Google One in the US.
| Storage | Plan | UK per month | US per month |
|---|---|---|---|
| 5 GB | iCloud free | £0 | $0 |
| 15 GB | Google free | £0 | $0 |
| 50 GB | iCloud+ | £0.99 | $0.99 |
| 100 GB | £1.79 | $1.99 | |
| 200 GB | iCloud+ | £2.99 | $2.99 |
| 200 GB | £2.79 | $2.99 | |
| 400 GB | Google AI Plus | £4.49 | $4.99 |
| 2 TB | iCloud+ | £8.99 | $9.99 |
| 2 TB | Google AI Plus | £9.49 | $9.99 |
| 5 TB | Google AI Pro | £18.99 | $19.99 |
| 6 TB | iCloud+ | £26.99 | $29.99 |
| 12 TB | iCloud+ | £54.99 | $59.99 |
At 200 GB in the UK, Google costs 20p less a month. At 2 TB in the UK, iCloud+ costs 50p less. In the US the two match at both sizes.
A 30 GB library needs a paid plan on either service, and iCloud+ is the cheaper entry at £0.99 or $0.99. A library between 5 GB and 15 GB can stay free on Google if Gmail and Drive leave room, but it fills iCloud's free allowance.
Google says prices depend on your location, its App Store rows are in-app prices, and the US listing does not label billing periods. Confirm the figure at checkout. Apple's UK prices include tax, and some US states add it. Google's AI plans also bundle Gemini features, which only add value if you would use them.
Does Google Photos free up space on iPhone?
Google Photos does not free up space on iPhone by itself. A backup adds a copy online and leaves the phone's copy where it was. Space returns only after the phone's copies are deleted, which Google's Free up space tool does in two stages.
Google's steps start in its app and finish in Apple's:
Google tells you to make sure photos are backed up before you start, because this tool deletes them from the device.
iCloud Photos frees space differently. With Optimize iPhone Storage, full-resolution files stay in iCloud and the phone keeps space-saving copies when it needs room. Apple says the setting is on by default.
To check it, go to the iCloud Photos settings. In iOS 27 or later, tap iPhone Storage and confirm Optimize iPhone Storage is on.
The originals have to fit in iCloud, so a library over 5 GB needs a paid plan first. The iPhone storage calculator estimates library size from the photos and video you shoot each month.
Free up space is a delete, and on an iPhone a delete behaves differently depending on which app makes it.
A delete on an iPhone reaches different places depending on the app that makes it. Each row here holds with iCloud Photos on and the Google Photos backup finished.
| Action on the iPhone | iPhone copy | iCloud Photos copy | Google Photos copy |
|---|---|---|---|
| Delete in Apple's Photos app | Moves to Recently Deleted for 30 days | Deleted on every device | Backed-up copy stays |
| Delete in the Google Photos app | Deleted, and may sit in Recently Deleted | Deleted on every device | In trash for 30 days, then gone |
| Free up space in Google Photos | Deleted once you clear Recently Deleted | Deleted on every device | Backed-up copy stays |
The iCloud column combines two vendor statements. Google says its delete removes the same item from your device. Apple says a delete on one device applies everywhere you use iCloud Photos.
Free up space needs the most care when both services run. It keeps Google's copy and removes iCloud's, so the photo also leaves any iPad or Mac using iCloud Photos. Recently Deleted gives you 30 days to reverse a mistake made on the phone.
iCloud Photos under standard data protection is encrypted in transit and on the server, with the keys held by Apple. End-to-end encryption for Photos needs Advanced Data Protection, an optional setting.
UK readers have a further limit. Apple's page, dated September 2025, says UK users who have not already turned on Advanced Data Protection no longer have the option.
Google's safety page describes encryption in transit and at rest, and it does not describe end-to-end encryption. The same page says Google Photos does not sell your photos. It also says your photos are not used for advertising, unless you make Google Photos data available to other Google services that support ads.
On AI, Google says it does not train generative AI models outside Google Photos with your personal data in Google Photos. Other Google services you connect follow their own policies, and Google says it may train on summaries and inferences from your library there.
Can I use Google Photos and iCloud at the same time?
You can use Google Photos and iCloud at the same time, because they are separate services. iCloud Photos syncs the library and Google Photos backs up what it finds on the phone. Each one bills its own storage, so a library too large for both free allowances is paid for twice.
The Google copy then works as a second backup. A delete in Apple's Photos app removes the iCloud copy and leaves Google's, which is what makes the pairing useful.
Dropping iCloud Photos altogether has a cost. Apple says that with iCloud Photos off, iCloud Backup may include the photos and videos on the phone. A large library can then fill the free 5 GB, so check the backup size after switching. Other routes are set out under how to back up iPhone photos.
Apple's transfer service sends a copy of your iCloud Photos library to Google Photos. Most transfers take three to seven days, and some take up to 30. Live Photos, shared albums, smart albums, and some metadata stay behind, and Advanced Data Protection must be off.
The transfer leaves your iCloud library in place, and photos added later do not follow.
The reverse transfer, from Google Photos to iCloud Photos, can take several hours to a few days. Originals stay in Google Photos. Live Photos, Motion Photos, and Memories do not transfer, and Advanced Data Protection must again be off.
The better service depends on your devices and on how you want storage handled.
| Your situation | Better fit | Why |
|---|---|---|
| Apple devices only, and you want storage handled for you | iCloud Photos | Built in, and Optimize iPhone Storage keeps space free |
| You also use Android | Google Photos | The same library in its app on both phones |
| Library under 15 GB, and you do not want to pay | Google Photos | Three times iCloud's free allowance |
| You want a second copy away from Apple | Both | Google's copy survives a delete in Apple's Photos app |
| You are in the US and want end-to-end encrypted photos | iCloud Photos with Advanced Data Protection | Not open to new users in the UK |
The plan you need follows the size of your library on both services, so a smaller library can mean a cheaper plan or none. Screenshots, burst frames, and duplicates take space on the phone and in the cloud alike.
Swipe-based photo cleaner apps show the camera roll one photo at a time, so each delete is your own decision. Apps such as Swipe Quick do this on the device: swipe left to delete, swipe right to keep, with nothing uploaded. Deleted photos go to Recently Deleted for 30 days.
Google Photos is free on iPhone up to the 15 GB limit of a Google Account, and the app costs nothing to download. Storage past that allowance needs a paid plan, and the allowance is shared with Gmail and Drive.
You do not need iCloud if you use Google Photos for your photos alone. iCloud Backup still draws on iCloud storage, though, and Google storage does not count towards it.
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