How to Wipe Your Phone Before Selling It (iPhone & Android)

Selling your old phone is easy money — but only if you hand it over clean. A proper wipe does two jobs: it protects your personal data, and it releases the phone from your accounts so the buyer can actually use it. Skip the second part and you'll ship a phone that's bricked by Activation Lock or Factory Reset Protection, which means refund requests, bad reviews, or a very awkward conversation.

Here's the complete checklist, in the right order, for both iPhone and Android.

Step 1: Back Up Everything First

A factory reset is irreversible. Modern phones encrypt your data by default, and the reset destroys the encryption keys — there is no "undo" and no recovery service that can bring your photos back. Back up before you touch anything else.

iPhone:

1. Go to Settings > [your name] > iCloud > iCloud Backup and tap Back Up Now. Stay on Wi-Fi until it finishes.
2. Or back up to a computer: connect the iPhone, open Finder (Mac) or the Apple Devices app/iTunes (Windows), and click Back Up Now. Check "Encrypt local backup" so your passwords and health data come along.

Android:

1. Go to Settings > Google > Backup (on Samsung: also Settings > Accounts and backup > Back up data for Samsung Cloud) and run a backup of apps, settings, and call history.
2. Confirm your photos and videos are in Google Photos (open the app and check the backup status on your profile icon), or copy them to a computer over USB.
3. Don't forget the easily-missed stuff: downloaded files, WhatsApp chats (it has its own backup setting), and any two-factor authenticator apps — move your 2FA accounts to your new phone before wiping, or you can lock yourself out of everything.

If you're upgrading, set up the new phone from this backup first and live with it for a few days. Wipe the old phone only after you're sure nothing's missing.

Step 2: Sign Out of iCloud — the Activation Lock Step (iPhone)

This is the single most important step when selling an iPhone. While Find My is enabled, the phone carries Activation Lock: even after a factory reset, it demands your Apple ID password before anyone can set it up. A buyer who receives an Activation-Locked iPhone has received a paperweight.

The good news: on iOS 15 and later, the erase flow handles this for you when done correctly:

1. First, unpair your Apple Watch if you have one (open the Watch app, tap your watch, and unpair — this also clears the watch's own activation lock).
2. Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
3. The assistant shows what will be removed and prompts for your Apple ID password. Entering it signs you out of iCloud, turns off Find My, and removes Activation Lock as part of the erase.
4. If you prefer to do it manually, go to Settings > [your name], scroll down, tap Sign Out, and enter your password — then erase.

Already shipped the phone without doing this? You can still release it remotely: sign in at icloud.com/find, select the device, choose Erase, then Remove from Account. Removal from your account is what clears Activation Lock.

Step 3: Remove Your Google Account — the FRP Step (Android)

Android's equivalent of Activation Lock is Factory Reset Protection (FRP). If a phone is reset through recovery mode while a Google account is still on it, the setup screen will demand that account's credentials, locking the buyer out.

The key detail: a factory reset started from inside Settings, while you're signed in and unlock the phone yourself, clears FRP properly. You only hit FRP problems when a reset happens the "untrusted" way. Still, the belt-and-suspenders approach is to remove accounts first:

1. Go to Settings > Passwords & accounts (Samsung: Settings > Accounts and backup > Manage accounts), tap your Google account, and choose Remove account.
2. Samsung phones: also remove your Samsung account (Settings > tap your name > Sign out) — Samsung has its own reactivation lock tied to Find My Mobile.
3. Remove your screen lock (PIN/pattern) last, if you like, as a final confirmation that no protection layers remain.

Step 4: Handle Your eSIM and SIM Card

Your phone number is part of the handover, too:

1. Physical SIM: just pop it out and keep it. Move it to your new phone or hold it until your carrier transfers service.
2. eSIM: transfer your line to your new phone first — most carriers support eSIM transfer during the new phone's setup, or you can call them. Once your number is safely active elsewhere, erase the eSIM from the old phone. On iPhone, the erase flow asks whether to keep or delete eSIMs: when selling, choose delete. On Android, the factory reset screen has a checkbox to erase downloaded eSIMs — check it when selling.

Never erase an eSIM before the number is working on your new device, or you'll need your carrier to reprovision it.

Step 5: Run the Factory Reset

With backups done and accounts removed, the actual wipe is the easy part.

iPhone:

1. Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
2. Tap Continue, enter your passcode and Apple ID password when prompted, and confirm.
3. The phone reboots once or twice and lands on the "Hello" setup screen. Done.

Samsung Galaxy:

1. Settings > General management > Reset > Factory data reset (on the newest One UI versions: Settings > General management > Reset > Erase all data).
2. Scroll through the summary of accounts and data, tap Reset, confirm with your PIN, then tap Delete all.

Google Pixel and most other Androids:

1. Settings > System > Reset options > Erase all data (factory reset).
2. Tap Erase all data, confirm your PIN, and confirm again.

Because the storage is encrypted and the reset destroys the keys, a settings-menu reset on any modern iPhone or Android renders your old data unrecoverable — no extra "data shredding" apps needed.

Step 6: Verify the Wipe Before You Ship

Two minutes of verification prevents 99% of post-sale problems:

1. Boot the phone. It should land on the language/"Hello" setup screen with no requests for a previous Apple ID or Google account. If you can step through the first setup screens to the Wi-Fi page without an account prompt, the locks are clear.
2. Check your account from another device. iPhone: open Find My (or icloud.com/find) and confirm the old phone is gone from your device list — if it lingers, use Remove from Account. Android: visit Google's Find My Device page and remove the old phone if it's still listed; also check myaccount.google.com > Security > Your devices and sign it out.
3. Pull your SIM if you haven't, and give the phone a final once-over: photos of its condition protect you in any dispute, and honest condition descriptions get better prices. If you're not sure how to describe wear, our grading and damage guide shows how professional resellers classify everything from like-new to for-parts.

Even phones with problems are worth selling: devices with cracked screens or bad batteries are bought and restored every day — see our repairable devices and devices-for-parts collections for a sense of that market. And if this wipe is part of an upgrade, a renewed iPhone or renewed Samsung Galaxy gets you a newer model for a fraction of retail.

FAQ

Does a factory reset really delete everything?

On any modern iPhone or Android, yes. The storage is encrypted by default, and the reset destroys the encryption keys, making the underlying data unreadable even with forensic tools. The one caveat: a reset doesn't remove account locks unless you sign out properly — which is why the iCloud and Google account steps come first.

What happens if I sell an iPhone without signing out of iCloud?

The buyer hits Activation Lock at setup and can't use the phone without your Apple ID password. You can fix it after the fact from icloud.com/find by erasing the device and choosing "Remove from Account" — never share your Apple ID password as a workaround.

Do I need to remove the SIM card before selling?

Yes. The SIM (or eSIM) carries your phone line, and a buyer with your active SIM could receive your calls and texts — including two-factor codes. Pull the physical SIM, and erase eSIMs during the reset after your number is transferred.

Should I factory reset from recovery mode instead?

No — not when selling. A recovery-mode reset on Android while your Google account is still on the phone triggers Factory Reset Protection and locks out the buyer. Always reset from the Settings menu while signed in, or remove your accounts first.

How long does a factory reset take?

Usually 2–10 minutes from confirmation to the setup screen, depending on the device. The backup beforehand is the slow part — an iCloud or Google backup over Wi-Fi can take an hour or more if it's your first full backup in a while.

Is it safe to sell a phone that won't turn on?

Generally yes, with precautions. If the phone ever syncs again, a remote erase you've queued from Find My or Find My Device will execute. Remove the device from your Apple or Google account, pull the SIM, and sell it accurately described as for-parts. Encrypted storage means your data is unreadable without your passcode even if the phone is revived.