Key Takeaways
Summary
18 items · 20–45 minutes
Why a Factory Reset Isn't the Whole Job
Most people know to factory reset a phone before passing it on. What fewer realise is that a reset, on its own, can leave an activation lock armed, accounts partially signed in, or a SIM card still sitting in the tray. The next owner ends up with a brick — or worse, lingering access to your cloud services.
Whether you're selling, trading in, gifting to a family member, or handing a device to a recycler, this checklist covers every step that matters: backing up what you need, signing out of everything, and verifying the phone is truly clean and transferable. If you're on the receiving end of a used phone, our guide to refurbished phone trade-offs explains what to inspect before you commit.
Don't Factory Reset Before Signing Out
On both iPhone and Android, performing a factory reset without first signing out of the primary account (Apple ID or Google account) can leave the activation lock enabled. The next user will be unable to set up the phone without your credentials. Always sign out of the account first, confirm the lock is cleared, and only then run the reset.
Tools You'll Need
Before working through the checklist, gather the following. Having everything ready in one session prevents half-finished steps.
Cloud backup account (iCloud, Google One, etc.)
Stores photos, contacts, and app data so nothing is lost when the device is wiped.
USB cable and a computer
Enables a local backup as a secondary copy and allows file transfer before the reset.
SIM card ejector tool or small paperclip
Used to remove the SIM card from the tray before handing over the device.
Another phone or device
Lets you verify your backup was successful and your accounts are accessible before wiping.
The Full Pre-Handoff Checklist
Work through these groups in order. Skipping ahead — especially to the factory reset — before completing earlier steps is the most common source of data loss and transfer problems.
Back Up Your Data
Sign Out of Every Account
Remove SIM, Cards, and Accessories
Verify and Perform the Factory Reset
Activation Lock Can Brick a Device for the Buyer
Apple's Activation Lock and Google's Factory Reset Protection are security features designed to prevent theft — but they also stop legitimate buyers from using a device if the previous owner didn't sign out properly. Before handing over any phone, power it back on after the reset and confirm it reaches the setup screen without requesting prior account login. If it does prompt for the old account, the handoff is not complete.
If you're passing this phone to someone who has never owned a smartphone before, point them toward our first smartphone owner's guide so they can set it up confidently from scratch.
After the Reset: Confirming It's Ready
Once the factory reset completes, the phone should restart into its initial setup screen — the same experience a brand-new owner would see. Walk through the first few screens to confirm no account is pre-loaded and activation lock is not triggered. If the device asks for a previous owner's credentials, the activation lock was not properly cleared before the reset. You will need to restore the phone from your own credentials, sign out of the relevant account (Apple ID or Google account), and reset again.
Also confirm the SIM tray is empty unless you're keeping the number. Check that no microSD card containing personal files remains inserted. A quick visual inspection of the device for cracks or damage, documented with a photo, is worth doing before handoff to avoid disputes later.
For a broader look at managing your devices responsibly from setup through disposal, see the Consumer Electronics Ownership guide. And if you want to get more out of the phone you're keeping, these overlooked phone settings are worth a few minutes of your time.