Summary

18 items · 30–60 minutes

Why Phone Transfers Still Go Wrong

Modern phones make switching easier than ever — automated transfer tools, cloud backups, and setup wizards handle most of the heavy lifting. But "most" isn't "all." Certain categories of data sit outside the standard transfer pipeline, and if you don't account for them before you start, they're gone.

This checklist walks you through what to secure on your old phone first, what to verify on your new one, and what to do with the device you're leaving behind. If you want a fuller walkthrough of the transfer process itself, our step-by-step data transfer guide covers each stage in detail. And once you're done here, it's worth reading about securing your new device before you start using it — the first configuration steps matter more than most people realize.

Before You Start — Secure Your Old Phone

Back up your old phone fully using your platform's native backup tool (iCloud for iPhone, Google One or local backup for Android) and confirm the backup completed successfully. Must
Export or migrate your authenticator app (2FA codes) using the app's built-in transfer feature before touching anything else. Must
Note down any passwords or PINs you rely on from memory — you'll need them to re-verify accounts on the new device. Must
Manually save SMS or MMS threads you want to keep, especially if you're switching platforms (Android ↔ iPhone), since they may not transfer automatically. Should
Check individual apps — especially games, notes, and productivity tools — for their own cloud sync or export options. Should
Screenshot or record any app-specific settings, custom configurations, or saved content that won't sync automatically. Nice to have

During Setup — Transferring Your Data

Use the phone's official transfer wizard (Quick Start on iPhone, or the setup screen transfer on Android) rather than relying solely on cloud restore for the most complete transfer. Must
Ensure both phones stay plugged in and connected to Wi-Fi for the full duration of the transfer. Must
Re-download your essential apps from the app store after setup rather than assuming all apps carried over. Should
Re-authenticate your email, payment, and banking apps — expect to verify your identity on new hardware. Must

After Setup — Verify Before You Wipe

Check that your photos and videos are visible and complete on the new device — scroll through recent and older albums to spot any gaps. Must
Confirm your contacts list is intact and test that calls and messages work correctly. Must
Open your most-used apps and confirm your account data, history, and saved content loaded as expected. Must
Test your 2FA authenticator app by checking that codes generate correctly for at least one account. Must
Verify that your payment methods (Apple Pay, Google Pay, or similar) are re-enrolled on the new device. Should
Check your calendar and reminder apps to ensure events and recurring items transferred correctly. Should

Wrapping Up — Your Old Device

Sign out of all accounts (Apple ID, Google account, email, social apps) on the old phone before resetting it. Must
Remove the old phone from your trusted devices list in account security settings for each major service. Must
Perform a factory reset only after confirming everything on the new device is correct — not before. Must

What Commonly Slips Through the Cracks

Even after a smooth transfer, a handful of things tend to surprise people. SMS and MMS message histories don't always move between operating systems — if you're switching from Android to iPhone or vice versa, assume they won't. App data is another gap: reinstalling an app on your new phone restores the app, not necessarily your progress, saved files, or in-app settings. Each app handles its own cloud sync differently, so check the ones you use most before you switch.

Two-factor authentication (2FA) deserves its own callout. If you use an authenticator app — such as one that generates time-based codes — those codes are tied to the specific device. Moving to a new phone without migrating your authenticator first can lock you out of accounts entirely. Most authenticator apps have a dedicated export or transfer function; use it before your old phone is wiped.

Don't Wipe Your Old Phone Too Soon

It's tempting to reset your old phone the moment setup finishes on the new one — but wait. Some data takes time to sync fully, and you won't know what's missing until you try to find it. Keep your old phone accessible and signed in until you've worked through the verification steps in this checklist.

It's also easy to overlook the accounts that are linked to your phone number or device ID rather than an email address. Payment apps, banking apps, and some messaging services require you to re-verify on new hardware. Have your login credentials ready and expect to go through identity confirmation steps.

Finally, remember that deleting an app from your old phone is not the same as managing your account data. Our article on what really happens when you delete an app explains what persists even after uninstalling. Once your new phone is set up and running smoothly, you may also want to look at organizing your digital life without adding more apps — a cleaner setup is a good opportunity to simplify.

Before You Hand Off Your Old Phone

Once you've verified everything transferred correctly, your old device needs attention too. Signing out of accounts, removing trusted device status, and performing a proper factory reset protects your personal data — and matters even more if you plan to sell or recycle the phone. Our dedicated data safety checklist for recycling or reselling a device covers every step to take before your old phone leaves your hands.

Required

Native Cloud Backup (iCloud / Google One)

Creates a full encrypted backup of your phone's data that can be restored to your new device during setup.

Required

Authenticator App (with export feature)

Migrates your two-factor authentication codes to the new device so you're not locked out of accounts.

Optional

Password Manager App

Stores and syncs your account credentials across devices so you can re-sign in to everything without guessing passwords.

Optional

SMS Backup App

Archives your text message history to cloud storage or a local file, especially useful when switching between Android and iPhone.

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