Why This Step Often Gets Skipped — and Why It Shouldn't
When a new phone arrives, the old one tends to get tucked in a drawer or quickly passed along. The rush to set up a new device means the outgoing phone rarely gets the attention it deserves — and that's where problems begin.
Your smartphone holds a remarkable amount of personal information: photos, saved passwords, banking apps, email accounts, health data, and more. If that data isn't fully removed before the device changes hands, it can be accessed by whoever ends up with the phone next — whether that's a family member, a buyer through a resale platform, or a trade-in program.
This checklist walks you through every step in plain language. If you're newer to managing your phone's settings, our beginner's guide to smartphones can help you get comfortable with the basics first.
Your Data May Still Be Recoverable Without a Reset
Simply deleting photos or apps does not remove your personal data from the device. Files can sometimes be recovered with widely available tools. A full factory reset — preceded by signing out of all accounts — is the only reliable way to clear your data before a handoff. Do not skip either step.
What You'll Need to Get Started
Before you begin, gather a few things so the process goes smoothly without interruption.
Your account login credentials
Required to sign out of Apple ID, Google, and any third-party app accounts before resetting the device.
SIM ejector tool or small paperclip
Used to open the SIM card tray and remove your SIM before handing off the phone.
A computer or external storage drive
Provides a local backup destination for photos, videos, and files if you prefer not to rely on cloud storage.
Cloud storage account
Allows you to back up and sync contacts, photos, and app data wirelessly before the reset.
Having your login credentials ready is especially important. You'll need them to sign out of linked accounts — a step that must happen before you run a factory reset, not after.
The Full Checklist: Step by Step
Work through each group in order. Skipping ahead — particularly to the factory reset — before completing earlier steps can cause issues that are difficult to reverse.
Back Up Your Data
Sign Out of All Accounts
Remove Physical Components
Perform the Factory Reset
Verify and Wrap Up
Do Not Factory Reset Before Signing Out
Running a factory reset before signing out of your Apple ID or Google account will leave Activation Lock or Factory Reset Protection active on the device. The next user will be locked out and unable to set up the phone without your credentials. Always sign out of linked accounts first, while you still have full access to the device.
For a deeper look at the habits that protect your personal data on mobile devices generally, see our guide on everyday phone security habits.
A Note on Device-Specific Locks
Both major mobile platforms include anti-theft features that tie the device to a specific account. On iPhones, this is called Activation Lock, managed through iCloud. On Android devices, it's called Factory Reset Protection (FRP). If either of these remains active after a reset, the next person to use the device will be prompted to enter your account credentials — making the phone essentially unusable for them.
The only reliable way to clear these locks is to sign out of your Apple ID or Google account while you still have access to the phone. Doing this after a factory reset is either very difficult or impossible without contacting the manufacturer's support team.
If you're unsure whether your device has these features active, check under Settings > > iCloud on iOS, or Settings > Accounts on Android, before proceeding with any reset. You can also find complementary guidance in our related article — things worth checking before handing off your old phone.
