Software · guide
By Alberto Gulotta · Updated · 15 min read
How to restore iPhone from backup has a precondition that reorders everything else, and Apple states it in the first step rather than in a footnote.
“Turn on your device. You should see a Hello Screen. If you already set up your device, you need to erase all of its content before you can use these steps to restore from your backup.”
One sentence, and it reorganises the whole question. A restore is something that happens during setup, not something you do to a phone you are already using. There is no menu on a working iPhone that pours a backup back into it. If the phone in your hand is set up, the honest sequence is: erase it, then restore during the setup that follows — which is a far larger commitment than the word “restore” suggests, and worth knowing before you start rather than halfway through.
With that established, the rest is a choice between two routes, and the choice is mostly decided by where the backup already is. An iCloud backup restores over Wi-Fi during setup; a computer backup restores over a cable. Neither is better in the abstract, and Apple gives the same instruction for choosing between individual backups on both: look at the date.
From an iCloud backup
during setup · over Wi-FiFrom a backup on a computer
over a cableOn the iCloud side there is one extra instruction worth following literally. Apple says to look at “the date and size of each” — size, not just date. A backup that is markedly smaller than its neighbours is telling you something about what was included when it ran, and the moment to notice that is before you commit to it rather than after.
“Once you’ve made your backup, it’s important you know how to restore it, and to check that it contains all your important data.”
That is the UK’s National Cyber Security Centre, and set beside Apple’s first step it turns uncomfortable. A restore is the only test a backup ever gets, and on a phone it is a test that cannot be rehearsed — the device has to be erased before the restore can begin, so whatever the backup turns out to be missing is discovered after the old contents are gone. CISA says the same thing from the other end: “A backup plan is only helpful if everyone knows how to use it.” Neither body is writing about phones, and both describe precisely the position of somebody who reaches this page on the worst possible day.
What follows from that is not a procedure but a habit, and it belongs to a calm week rather than a bad day. The instruction is to check that a backup contains what matters, which is a different action from making one — and the only one of the two that can be carried out without erasing anything. A backup cannot give back what was never included in it, and the restore is the worst possible moment to find out where that line falls.
“If you’ve purchased iTunes or App Store content using multiple accounts, you’ll be asked to sign in to each account.” Two sentences later: “Until you sign in to your Apple Account, you will not be able to use the apps.”
This is the part that is easiest to miss on the far side of a restore. The apps are back on the home screen and they will not open. Their icons are placeholders until the account that bought them has been signed into, and if purchases were spread across more than one Apple Account over the years, that is more than one sign-in. Apple does let you defer it — “you can tap Skip this Step and sign in later” — at the price of a phone full of apps that do nothing yet.
The restore finishes twice
The progress bar is the first ending. Apple describes the second one plainly.
What happens if you walk out of range. Nothing dramatic, and Apple says so: “If you disconnect from Wi-Fi too soon, the progress will pause until you reconnect.” It pauses rather than fails — which is reassuring, and also the reason a restore that appears to have stalled has usually just lost the network rather than broken. The same applies to the long background stage afterwards, which is why the advice there is about Wi-Fi and power rather than about waiting by the phone.
The other thing that stops a restore is not the network but the calendar. A backup carries the version of iOS it was made on, and a phone older than that will not take it — which is easy to walk into after a repair or a replacement handset.
“Your backup might need a newer version of iOS or iPadOS. If so, you’ll see an error that you can’t restore it.”
A backup can be too new for the phone it came from — after a repair, a replacement handset, or a device that sat in a drawer through two releases. From iCloud this is barely an event: Apple says “update your device before you restore”, and “if you install the update, your device updates automatically, then restores your backup”. From a computer it simply stops, with an error that names the wrong problem.
The way through is the part worth knowing before you begin, because it means setting the phone up twice. At the Transfer Your Apps & Data screen, “tap Don’t Transfer Apps & Data” — you are deliberately building an empty phone. If you have already gone the other way, Apple has a step for that too: “If you tapped Restore from iCloud Backup, tap Back to return to the Set Up screen.” From there, “You can skip the steps for Apple Account, Touch ID or Face ID, and passcode.” Then update it to the latest iOS, let it restart, and erase everything you just made: Settings, General, “Transfer or Reset”, “Erase All Content and Settings”. The Hello screen returns, and this time the backup will load. Two setups and an update stand between the backup and the phone, and none of it is visible from the error message.
When the restore refuses rather than pauses. Three of Apple’s answers explain most of it. The connection is not negotiable — “you can’t restore from a backup over a cellular Internet connection” — so a phone with no Wi-Fi has no route at all. If the backup you are looking for is not on the list, it may not be missing: “when you choose a backup, you can tap Show All to see all available backups”. And the loop that looks like a bug is not one: “if you made purchases with more than one Apple Account, you might get repeated prompts to enter a password”. Apple’s way out is to enter each one, or “tap Skip this Step or Cancel. Repeat until there are no more prompts.”
One more case Apple documents, because it arrives at exactly the wrong moment. After a repair, “when you get your iPhone or iPad back from an Apple Store or Apple Authorized Service Provider, keep in mind you might need to restore your device” — from an existing backup or by setting it up as new. Handing a phone in for service is one of the times a current backup is worth checking rather than assuming.
What this page will not do is tell you which backup to pick. Apple’s instruction is the date and the size, you are the only one who knows what happened between them, and a page that guessed would be guessing about your week rather than about the software.
It also will not promise that everything comes back. A restore returns what the backup contained, and what a backup contains is a separate question with its own answer — which is the first guide below.
Three ways in. If the phone is already set up, read the box above first.
A restore is a setup-time operation. A phone already in use has to be erased before it can accept one, which makes this a bigger decision than the word suggests.
iCloud over Wi-Fi during setup, or a computer over a cable. Apple’s instruction for choosing between backups is the same on both: the date, and the size.
It finishes twice: a progress bar of minutes to an hour, then hours or days of background restoring. And the apps stay inert until the buying account signs in.
Not covered here. It will not tell you which backup to choose. Apple gives you the date and the size; the rest is knowledge of your own week that no page has.
It will not promise everything returns. A restore gives back what the backup held, and what a backup holds is a different question with its own guide.
And it will not recommend third-party software that claims to restore selectively from an iPhone backup. Apple documents two routes and this site has tested nothing else against a real backup, which is the only test worth anything here. What holds instead is simple: when you can restore, and when you cannot, is Apple’s own answer, and the advice to rehearse it first comes from a cyber security body.
Written by Alberto Gulotta
Founder and editor of AI Tools Primer, writing from Palermo, Italy. Thirty-five years of taking computers apart, starting with a Commodore 64 — the long version is on the about page.
Something wrong on this page? Write to aitoolsprimer@gmail.com and it gets fixed.
Written on 22 August 2026 · last checked 23 September 2026.
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