Before you trade in a phone, back up your data, sign out of your accounts, then factory reset it, in that order, so you don't lose anything or hand over personal data. Skipping the sign-out step is the mistake that locks the device and voids many trade-ins.

Short answer:

  • Back up everything to iCloud or Google, confirm the backup completed.
  • Sign out of iCloud/Find My (iPhone) or remove your Google account (Android) to disable activation locks.
  • Factory reset the device, then remove the SIM/eSIM and any storage card.

Step 1: Back Up Everything First

Never reset before backing up, a factory reset is permanent. Capture your data in full.

  • iPhone: Go to Settings > [your name] > iCloud > iCloud Backup > Back Up Now, and wait for it to finish. Confirm the date/time updates. For media, ensure iCloud Photos has finished uploading.
  • Android: Go to Settings > Google > Backup > Back up now, and verify Google Photos has synced your library under the Photos app's backup status.

Also note anything stored only locally: authenticator app codes, downloaded files, and app data that doesn't sync. Export those before wiping.

Step 2: Sign Out of Accounts and Disable Activation Lock

This is the step most people forget, and it's the one that matters most. If you reset without signing out, Activation Lock (iPhone) or Factory Reset Protection (Android) leaves the device tied to your account, which can void the trade-in or block the next owner.

  • iPhone: Go to Settings > [your name], scroll down, and tap Sign Out to remove your Apple Account and turn off Find My iPhone. Also turn off Find My explicitly if prompted.
  • Android: Go to Settings > Accounts (or Passwords & accounts), select your Google account, and tap Remove account. Repeat for Samsung or other manufacturer accounts.

Do this before the factory reset so the locks release cleanly.

Step 3: Wipe Personal Data You Don't Want to Hand Over

Even with a reset planned, it's smart to reduce sensitive data first, and decluttering can also raise your phone's resale appeal if you're selling rather than trading.

  • Delete or transfer messages with sensitive info, banking app sessions, and saved passwords (your password manager keeps the master copy).
  • Clear large videos and photos you've already backed up so the device transfers and resets faster. Our large videos cleanup guide helps isolate the heavy files.
  • A review-first cleaner like Clenoir for iOS (or Cleanor for Android) can scan on-device and show you the largest videos, duplicates, and clutter before you confirm a deletion, useful for a quick pre-reset tidy.

Step 4: Factory Reset the Device

With backups done and accounts removed, erase the phone.

  • iPhone: Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings. This wipes data and removes the device from your account when you've signed out properly.
  • Android: Go to Settings > System > Reset options > Erase all data (factory reset). Confirm and let it complete.

After the reset, the phone reboots to the initial setup screen, exactly how a trade-in partner expects to receive it.

Step 5: Remove SIM, eSIM, and Storage Cards

Physical and embedded items are easy to forget.

  • Remove the physical SIM card using the ejector tool.
  • For an eSIM, delete it during the reset (iPhone offers Erase All Content and Settings with eSIM removal) or via Settings > Cellular beforehand, but only after confirming your new phone is provisioned.
  • On Android, eject the microSD card if present, and remove it from the device.

Why the Order Matters So Much

People lose data or void trade-ins by doing these steps out of sequence. The logic is simple:

  1. Back up first because the reset is irreversible. Once you erase, anything not backed up is gone for good.
  2. Sign out before resetting because Activation Lock (iPhone) and Factory Reset Protection (Android) bind the device to your account at reset time. Removing the account first releases the lock cleanly; doing it after can leave the phone stuck on a login screen the next owner can't pass.
  3. Reset, then remove SIM/eSIM so the wipe completes while the device is still provisioned, avoiding eSIM transfer headaches.

If you only remember one rule, make it this: never tap Erase All Content and Settings until you've confirmed both a completed backup and a signed-out account. That single habit prevents nearly every trade-in disaster.

Final Checklist Before You Send It Off

Run through this list before handing over the phone:

  1. Backup completed and verified.
  2. Apple Account / Google account removed; activation locks off.
  3. Factory reset complete, device on setup screen.
  4. SIM, eSIM, and SD card removed.

For more on freeing space and tidying media before a transfer, see the clean up phone storage hub and the storage cleanup FAQ. Done in this order, your trade-in goes smoothly and none of your data leaves with the device.

Want the fast version? Cleanor for iPhone scans on-device — nothing uploaded — and surfaces your largest videos, duplicate photos, and heavy caches in one pass. For the full routine, see the free up phone storage guide.

FAQ

What order should I follow when preparing a phone for trade-in?

Back up everything first, then sign out of your accounts to disable activation locks, then factory reset, and finally remove the SIM/eSIM and any storage card. Backing up first matters because a factory reset is irreversible.

Why do I need to sign out of my account before resetting the phone?

If you reset without signing out, Activation Lock on iPhone or Factory Reset Protection on Android leaves the device tied to your account, which can void the trade-in or block the next owner. Removing the account first releases the lock cleanly.

Where is the factory reset option on iPhone and Android?

On iPhone, go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings. On Android, go to Settings > System > Reset options > Erase all data (factory reset).