Phone owners preparing for a reset or trade-in
Check that the photos, messages, settings and app data you want can be restored before the phone is erased or handed over. Keep an account-recovery method that does not depend solely on that phone.
Who needs which backup?
People moving a large computer library
Compare an automatic cloud copy with a local drive for a substantial photo or document collection. The amount to transfer, available connectors and time needed to copy and check the files all matter.
People keeping a portable second copy
A flash drive can hold selected files separately from the old device. Before choosing one, check that its connector fits and that the phone or computer can access external storage.
What to check before choosing
Decide what must be recoverable after the old device is unavailable, then check the size of that data and how you will sign in to restore it. The National Cyber Security Centre advises keeping important data as a copy in a separate safe location; cloud storage and removable media are both possible routes.
| Concern | What to check | Who this matters to |
|---|---|---|
| Recoverable coverage | Identify which photos, documents and device data are backed up rather than only synchronised. Check the latest backup and how you would restore or open a sample file. | If I am about to erase or replace a phone, I need to know that the data I value has a usable recovery route. Around 40% of consumers may put recoverable coverage first. |
| Library size and transfer | Measure the files you intend to keep, then check drive capacity, connectors and the receiving device’s external-storage support. Treat advertised transfer speeds as conditional on the connection. | Moving a large photo or document library makes space and a workable transfer route my main concern; around 30% of consumers may prioritise that need. |
| Account access | Confirm a recovery number or method that does not rely solely on the outgoing device. Where available, prepare and securely store backup codes before the reset. | Even with my files copied, I could struggle to restore them if sign-in codes go only to the phone being erased. For around 30% of consumers, continued account access may be the primary concern. |
For an automatic backup, inspect the service’s included data and restore options rather than assuming that synchronised photos represent a full-device backup. For local storage, make the copy before the reset and confirm that another compatible device can open it. A memory card is an option only if the device supports it and the required files have actually been copied to it.
Mistakes to avoid before erasing a device
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Assuming a synced photo library is a full-device backup
Apple distinguishes content synchronised through iCloud from content included in its daily iCloud Backup. Seeing photos in iCloud therefore does not establish that every item needed to set up a replacement device is in that backup.
Review what the service includes, check the latest backup and open a representative photo or document from its intended recovery location before erasing the old device.
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Choosing an SSD by its quoted speed alone
Samsung says the Portable SSD T7’s maximum sequential speeds require a compatible USB 3.2 Gen 2 host and cable with UASP enabled; some operating systems may require reformatting.
Check the exact device port, cable and file-system requirements, then copy and reopen files before relying on the drive.
An incompatible connection or required reformatting can add setup time before a transfer.
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Leaving an Android backup unchecked indefinitely
Google says Android backup data other than photos and videos may be erased after 57 days of device inactivity. An old device backup should not be assumed to remain available without checking.
Review the backup and its restore route before your replacement or reset. Keep a separate copy of photos and documents that would be difficult to replace.
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Erasing the only device that receives sign-in codes
Apple warns that relying on a single trusted device and number can prevent receipt of verification codes if that iPhone is unavailable. Google says changes to recovery information may take up to seven days to take effect.
Set up an additional recovery method before the transition and check how you will sign in without the outgoing phone. Keep any backup codes secure and do not share them.
Relevant brands and services
Apple
Relevant to iPhone, iPad and Mac users comparing iCloud Backup with a computer backup before moving devices.
- Apple explains that iCloud synchronisation and device backup cover different sets of data.
- Apple says an encrypted computer backup is needed for certain data, including Health and Keychain data. Check the backup method against the items you need to restore.
Relevant to Android users checking device backup, Google Photos and account storage before a reset or replacement.
- Google offers automatic Android device backup; photos and videos backed up to Google Photos are separate from device-backup data.
- Google says backed-up data other than photos and videos may be erased after 57 days of device inactivity. Check that the backup you need is still available.
Microsoft
Relevant to people using OneDrive for documents while moving between computers.
- Microsoft says OneDrive Version History lets users restore earlier versions of files stored in OneDrive or SharePoint.
- File version history does not establish that every local file or the computer’s full device state has been backed up.
Samsung
Relevant as a portable-SSD example for transferring a substantial file collection between compatible devices.
- Samsung lists the Portable SSD T7 with USB 3.2 Gen 2 and USB-C-to-C and USB-C-to-A cables.
- Samsung’s quoted maximum sequential read and write speeds of 1,050 and 1,000 MB/s require a compatible host and cable with UASP enabled; some operating systems may require reformatting.
Removable storage for selected files
These Joybuy drives offer local storage for copying photos, documents and other selected files before changing devices. Choose by the amount you need to copy and the ports on the devices involved; a file transfer alone should not be assumed to preserve a phone’s complete settings or app data.
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Samsung Portable SSD T7 2 TB, Grey
A local-drive option when you need to copy a sizeable photo or document library. The named variant has 2 TB capacity and a USB Type-C 3.2 Gen 2 interface; check the receiving device’s port and file-system support before transferring files.
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Samsung MU-PE1T0S 1 TB portable SSD, Black
Consider this variant for a separate local copy of selected files when 1 TB covers what you intend to retain. Its title specifies USB Type-C 3.2 Gen 2; confirm that the intended device can access the drive and its file system.
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SanDisk Phone Drive with USB-C, 256 GB, Arctic White
A portable choice for copying selected files from a compatible USB-C device. It has 256 GB capacity; check your exact phone and app compatibility if you intend to use the described automatic photo and video copying, rather than assuming it backs up the full device.
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Western Digital Elements Port. 4 TB external hard drive, Black
A local-storage option for a large collection of selected photos and documents. The title specifies 4 TB and USB 3.0; check your computer’s connection and file-system requirements, particularly if you will open the files on a different operating system.
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MOVESPEED YSUSP05-512GSR 512 GB dual-interface flash drive, Silver
Consider this for manually moving selected files between devices with suitable USB-A and USB-C connections. Its title specifies 512 GB, USB 3.2 Gen 1 and a claimed read speed of 570 MB/s; check that the exact devices support external storage before relying on it for a transfer.
Common questions
Is cloud synchronisation the same as a device backup?
No: synchronisation and device backup can cover different data. Apple says content already synchronised through services such as iCloud Photos or iCloud Drive is not included in the daily iCloud Backup, so check both where your files are stored and how the other device data will be restored.
How much space should I allow on a local backup drive?
Start with the size of the files or backup set you intend to keep, then allow for any additional copies or later additions you plan to make. The National Cyber Security Centre notes that backup approaches can cover selected files or an entire device; a drive large enough for photos alone is not necessarily enough for everything you want to retain.
Will a faster external SSD speed up my transfer?
Only if the connected devices and cable support the conditions behind its quoted speed. For the Portable SSD T7, Samsung says its maximum sequential speeds require USB 3.2 Gen 2 and UASP support; also check file-system requirements before copying files.
What should I do about account access before resetting my phone?
Make sure you can sign in without relying solely on the phone you are about to erase. Apple recommends an additional trusted number for account verification, while Google provides recovery options and backup codes; Google says recovery-information changes may take up to seven days to take effect.