Here is the short version: how to wipe phone before selling does not mean deleting photos, clearing chats, and removing a few apps from the home screen. The safer order is to back up what you need, sign out of accounts, turn off Find My or device protection features, remove eSIMs or physical SIMs, unpair accessories, and only then use the official erase or factory reset process.［1］［2］［3］

People get into trouble when they treat “factory reset” and “I deleted everything I can see” as the same thing. If you miss account sign-out, Activation Lock, wallet cards, or paired devices, the next owner may not be able to use the phone. If you miss the backup step, you may erase the data you meant to keep.

If you already suspect the phone is behaving strangely or may have unwanted software on it, read how to check an iPhone for viruses or the relevant device troubleshooting guide before deciding whether to restore from an old backup.

Use the digital privacy guide as the wider checklist: it connects this issue to accounts, devices, identifiers, and data-broker exposure.

Key Takeaways

Before selling a phone, the important part is not “delete files.” It is back up, sign out, disable locks, remove cards, and then factory reset.［1］［2］

iPhone and Android both require you to know the account credentials first, or you may hit Activation Lock or device protection later.［1］［3］

Manual deletion is not enough. The official erase or factory reset flow is the standard approach.［1］［2］

If you suspect tampering, spyware, or malware, do not blindly restore the same old backup.［4］

Do not forget watches, earbuds, car Bluetooth, eSIMs, wallet cards, and Find My-style features.

Before You Tap Factory Reset, Prepare First

Start with this checklist:

Back up photos, contacts, files, and chat data.
Make sure you know your Apple Account or Google account password.
Sign out of cloud services and synced accounts.
Remove payment cards, transit cards, and wallet items.
Turn off Find My iPhone or Find My Device.
Unpair watches, earbuds, cars, and other accessories.
Remove physical SIM cards and storage cards, or decide what to do with your eSIM.［1］［2］［3］

This step determines whether the handoff is smooth or whether you lose data while leaving the phone locked.

Why You Should Not Just Delete Photos and Apps

Manual deletion only cleans the surface.

The official erase process removes content, settings, sign-in state, and some security configuration together. Manual deletion can leave account bindings, wallet cards, paired devices, and sync paths behind. Apple and Android documentation both treat “Erase All Content and Settings” or “Factory reset” as the standard path, not a scattered manual cleanup.［1］［2］［3］

How to Wipe an iPhone Before Selling It

1. Back Up First

You can back up to iCloud or create a local backup on a computer. If the phone previously showed suspicious behavior, tracking software, or strange configuration profiles, do not automatically restore the whole old backup later.［1］［4］

2. Unpair Apple Watch and Other Devices

Apple recommends unpairing Apple Watch before you sell or give away an iPhone. It is also smart to remove Bluetooth earbuds and car pairings so the old phone stops being trusted by nearby devices.［5］

3. Remove Wallet Items and eSIM

If you use Apple Wallet cards, transit cards, or an eSIM, handle them before the handoff. The erase flow will prompt you about the eSIM, but you should know whether you want to keep it or delete it.［1］

4. Turn Off Find My

If Find My iPhone is still enabled, some restore workflows cannot continue.［1］

5. Erase All Content and Settings

The usual path is:

Settings > General > Transfer or Reset iPhone > Erase All Content and Settings

Follow the prompts, enter the device passcode and Apple Account password, and confirm.［1］

How to Wipe an Android Phone Before Selling It

1. Confirm Your Account and Screen Lock Credentials

Google warns that after a factory reset, you may need the Google account information that was on the device to use it again. That is an anti-theft protection, not a nuisance.［3］

2. Back Up What You Want to Keep

Contacts, photos, texts, authenticator apps, chats, and downloaded files should be synced or copied to a safe place first.［3］

3. Remove SIM and SD Cards

A factory reset does not remove physical cards for you. If you use a microSD card, take it out manually.

4. Remove Device Admin and Special Permissions

Enterprise management, parental control, and device administrator apps can interfere with reset workflows. If the phone is already acting strangely, check these high-permission apps first.

5. Factory Reset the Phone

Most Android phones can be reset in Settings:

Settings > System > Reset options > Erase all data (factory reset)

The exact path varies by manufacturer, but the idea is the same.［2］［3］

What If the Phone Is Going for Repair, Not Resale?

You may not need the most aggressive wipe, but you should still assess the risk.

Apple’s Personal Safety Guide says restoring a device to factory settings can be a stronger option if you worry someone had physical access to the device or installed malicious or tracking software. For normal repair, you may choose a lighter exposure-reduction flow: back up temporarily, sign out of sensitive accounts, and remove payment cards.［4］

How to Check That You Are Finished

Use this final checklist:

The phone boots to the initial setup screen.
Your Apple Account or Google account is signed out.
Find My or Find My Device is disabled.
eSIM, physical SIM, and SD cards are handled.
Wallet cards, transit cards, watches, and Bluetooth pairings are removed.
The phone no longer appears in your account device list.［1］［3］［5］

If you also want to clean up overly broad permissions on your current devices, read what app permissions can expose.

My Advice: Treat Phone Resale Like a Small Data Migration

Do not treat it as a last-minute delete session.

You are really solving three problems:

Is your data backed up?
Are your accounts disconnected?
Is the device in a state that another person can actually set up?

When those three steps happen in the right order, selling, upgrading, or giving the phone to family becomes much less stressful.

Summary

Before selling a phone, back up first, sign out of accounts and services, then use the official erase flow.
On iPhone, focus on Apple Account, Find My, Apple Watch, Wallet, and eSIM.
On Android, focus on Google account, screen lock credentials, SIM/SD cards, and post-reset device protection.
If you suspect tampering or malware, do not automatically restore the same old backup to the new device.

FAQ

Is deleting photos and chats enough before selling my phone?

No. That removes only some visible content. It does not replace the official erase all content or factory reset process.［1］［2］［3］

Why should I sign out before erasing an iPhone?

Because it affects Find My, Activation Lock, and later setup. If it is not handled correctly, the new owner may be unable to activate the device.［1］［5］

Why does Android ask for the old account after a factory reset?

It is part of device protection, designed to stop thieves from simply resetting and using a stolen phone.［3］

Do I need to handle eSIM separately?

Yes. The iPhone erase flow can prompt you to keep or delete the eSIM, but you need to choose based on your carrier and upgrade plan.［1］

Can I restore from backup if I suspect malware?

Be careful. Apple’s Personal Safety Guide warns that if you erase a device because you suspect tampering or malware, restoring from backup may bring the problem back.［4］

What should I do after selling the phone?

Check your Apple or Google account device list, make sure the old device is gone, and confirm payments, texts, and two-factor authentication have moved successfully.

Disclaimer

This article is for general digital safety education only and does not constitute repair, forensic, or legal advice. Menu paths may vary by manufacturer and system version.

As the publisher, AethoVPN notes that clear phone before selling remains outside what a VPN can fix.

Sources

Apple Support, Erase iPhone: https://support.apple.com/en-asia/guide/iphone/iph7a2a9399b/ios
Apple Support, How to factory reset your iPhone, iPad, or iPod touch: https://support.apple.com/en-us/HT201274
Android Help, Reset your Android device to factory settings: https://support.google.com/android/answer/6088915?hl=en-en
Apple Personal Safety Guide, Restore device to factory settings: https://support.apple.com/guide/personal-safety/how-to-erase-all-content-and-settings-ips4603248a8/web
Apple Support, What to do before you sell, give away, trade in, or recycle your iPhone or iPad: https://support.apple.com/en-us/109511

Sources checked 8 May 2026.

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