How to Wipe Your Phone Before Selling
Before you sell a phone, protect your privacy by backing up what you need, removing accounts and security locks, and completing a factory reset. A phone data wipe is more than deleting a few photographs: cloud accounts, device-protection features, SIMs, memory cards and authenticator access can all matter. The checklist below gives a practical order that works for most iPhone and Android trade-ins without relying on one exact software version.
1. Make a backup before deleting anything
Start by deciding what you want to keep. Photos, videos, contacts, messages, documents, notes and app information may be stored only on the handset or may already be synchronised with a cloud service. Confirm that your backup has finished and, where practical, check it from another device or account before resetting the phone. If you use an authenticator app for two-factor login codes, move or export those accounts using the provider’s supported method before wiping the old handset.
2. Transfer anything you still need to your new phone
If you have already upgraded, complete the normal phone-to-phone transfer while both devices are available. Check important apps rather than assuming every login or locally stored file moved automatically. Banking, authentication, work profiles and messaging apps can have their own migration steps. Sell My Phones cannot recover information after you deliberately erase a device, so the safest approach is to verify the new phone first and reset the old one only when you are satisfied.
3. Sign out of cloud accounts and remove activation protection
For an iPhone, make sure the device is removed from the Apple account and that Find My/Activation Lock is no longer tied to you before it is processed. On Android, remove the Google account and any manufacturer account such as a Samsung account where applicable. Account protection is designed to stop stolen devices being reused, so a factory reset performed in the wrong sequence can leave a lock that prevents the next legitimate owner from activating the phone.
4. Remove work or device-management profiles
If the phone belongs to an employer, school or another organisation, do not sell it unless you have the right to do so and the management profile has been properly removed. Mobile device management can restrict activation even after a reset. A personally owned phone that was previously enrolled for work may also retain management settings. If you are unsure, check with the organisation before sending the handset.
5. Remove your SIM and any removable memory card
Physical SIM cards and microSD cards can contain information or remain linked to services you use. Remove them before packing the phone. If your device uses an eSIM, transfer or remove the mobile plan according to your network’s instructions. Do not assume a factory reset automatically cancels a mobile contract. The network account and the data stored on the handset are separate issues.
6. Unpair connected devices where useful
Smartwatches, headphones, car systems and other accessories may remain associated with the old phone or cloud account. Unpairing is particularly useful when the accessory will stay with you. This does not usually change the trade-in value of the handset, but it can prevent confusion when you set up the accessory on a replacement phone.
7. Factory-reset the device
Once the backup is confirmed and accounts are removed, use the phone’s built-in erase or factory-reset option. Keep the device charged or connected to power while the reset completes. Menu names vary between manufacturers and software versions, so use the official support instructions for your exact device if the location of the reset option is unclear. Do not install third-party ‘wiping’ tools from unknown sources simply because they promise a stronger clean.
8. Check the welcome/setup screen afterwards
When the reset finishes, the phone should normally return to its initial setup or welcome screen. You do not need to configure it again for your own use. The important point is that your personal home screen, apps and accounts are no longer visible. If the handset asks for your previous account credentials during activation, the account lock may not have been removed correctly.
Data security if a device arrives with personal data
The safest approach is to remove your personal data before the device leaves you. Do not rely on a trade-in service as your only backup or data-erasure method. If a damaged handset cannot be reset, tell us before sending it and do not provide passwords, PINs or two-factor authentication codes. Any handling of personal information associated with a trade-in is also subject to our Privacy Policy.
What if the phone is broken and cannot be reset?
A non-working or badly damaged phone may not allow a normal backup or reset. Do not risk injury by repeatedly powering a liquid-damaged, swollen or unsafe device. Tell us about the fault before sending and ask what options are available. A broken handset can still be assessed through our damaged phone trade-in route, but data access and account locks should be discussed honestly when the phone cannot be prepared in the usual way.
After the data wipe: condition and postage
Once the phone is prepared, compare its physical state with the condition guide, photograph it for your records, and follow the secure packing and postage instructions. If you need help with a particular account lock or are unsure whether the reset completed correctly, contact the relevant account provider or ask the Sell My Phones team before the handset leaves you.