Remove identity before releasing hardware
Deleting visible files or removing a SIM does not remove accounts, saved credentials, encrypted storage keys, activation locks or data held elsewhere on the device. A secure handover protects the former owner and leaves usable equipment ready for its next life.
Complete and test the backup, transfer anything needed, remove payment and trusted-device links, sign out and clear ownership locks, erase with the current manufacturer process, remove removable media and verify that setup starts as a new device. Use a responsible reuse or electronics-recycling route.
Use the secure exit sequence
- Decide the route. Prefer continued use, repair, resale or donation when safe and supportable; use an appropriate electronics recycler when reuse is not credible.
- Back up and verify. Open important data from the destination before changing the old device.
- Move services. Transfer mobile service, authentication, licences and essential accounts to the replacement where relevant.
- Remove relationships. Clear payment cards, trusted-device approvals, organisation management and paired accessories, then sign out as the manufacturer instructs.
- Erase correctly. Use the current platform process for sale or transfer, including drive-cleaning or cryptographic-erasure options where appropriate.
- Remove physical media. Check SIM, memory card, external drive, security key, optical disc and accessories for stored data.
- Verify the result. The device should begin at a fresh setup screen without the former account or management lock.
- Record handover. Keep serial, proof of erasure or recycler receipt where value, insurance, business policy or regulation justifies it.
Match the erase method to the device and risk
| Device | Consumer handover route | Important limitation |
|---|---|---|
| iPhone or iPad | Apple’s current sale or trade-in process includes backup, transfer, sign-out, Erase All Content and Settings, eSIM choice and removal from trusted devices. | Deleting synced items manually can remove them from iCloud and other devices; use the complete manufacturer sequence. |
| Android phone or tablet | Back up, confirm the Google account and screen-lock credentials, remove relevant accounts and use the manufacturer’s factory-reset instructions. | Factory-reset protection and vendor-specific steps can leave the device locked to the former owner if the sequence is wrong. |
| Windows computer | Microsoft’s Reset this PC “Remove everything” route has a Clean data option intended for consumer sale, donation or recycling. | Microsoft states that its consumer erasure does not meet government and industry data-erasure standards. |
| Failed or high-risk storage | Remove the device from accounts and obtain specialist sanitisation or destruction appropriate to the storage and data sensitivity. | A broken screen, dead battery or inaccessible drive does not prove that stored data is unrecoverable. |
Use current manufacturer instructions
Apple
Apple’s current iPhone and iPad handover guide covers backup, transfer, account removal, eSIM and Activation Lock.
Android
Google’s Android reset guide explains preparation, account credentials, backup and manufacturer-specific reset instructions.
Windows
Microsoft’s Reset your PC guide distinguishes keeping files, removing everything and cleaning data for a consumer handover.
When ordinary reset is not enough
The UK NCSC erasing-devices guide explains built-in reset options and points higher-assurance cases to secure sanitisation guidance. NIST SP 800-88 Revision 2, published September 2025, provides risk-based sanitisation guidance for organisations and media owners. Businesses, regulated users and anyone handling highly sensitive information should follow applicable policy and specialist requirements rather than treating a household reset as a universal standard.
Use a recognised local electronics-reuse or recycling route; do not place devices or lithium batteries in ordinary waste where local rules prohibit it.
Secure resale and recycling FAQs
Is deleting my files enough before selling a computer?
No. Deleted files may be recoverable and accounts or credentials may remain. Back up, remove account and management relationships, then use the current platform erase process appropriate to the storage and sensitivity.
Should I remove the SIM and memory card?
Yes. Check for a physical SIM, memory card, external storage, security keys and discs. Handle eSIM transfer or deletion through the carrier and manufacturer process, and erase removable storage separately if it will leave your control.
What if the device is broken and cannot be reset?
Remove it from cloud and trusted-device lists, revoke relevant access and seek a qualified service that can sanitise or physically destroy the storage before responsible recycling. Do not assume failed hardware contains no recoverable data.
Continue your device decision
Use the next guide that matches the buying, support, repair, backup, migration, resale or disposal question you still need to resolve.
