Key Takeaways
- Back up your old phone before starting any transfer to avoid permanent data loss.
- Both Android and iPhone offer built-in transfer tools that handle most data automatically.
- Some data — like two-factor authentication apps — requires manual migration steps.
- Verify all data has arrived on your new phone before wiping or selling your old one.
- Staying within the same ecosystem (Android to Android, iPhone to iPhone) simplifies the process significantly.
What you will need
Why Data Transfers Sometimes Go Wrong
Switching phones feels like it should be simple, but several things can quietly derail the process: a backup that hasn't synced recently, a new phone with insufficient storage, or an app that doesn't support cloud restoration. Understanding where the gaps are before you start is the difference between a smooth migration and a frustrating afternoon of troubleshooting.
The most important factor is which ecosystem you're moving within — or between. Staying Android to Android or iPhone to iPhone means the platform's own tools handle almost everything. Crossing platforms (Android to iPhone, or vice versa) requires an extra step but is still very manageable with the right app.
For context on why upgrading your phone matters in the first place, see our piece on why smartphones slow down over time. And if you're planning ahead, things worth checking before your contract renewal covers storage and compatibility questions worth settling before you commit to a new device.
What you will need
What You'll Need Before Starting
Gathering the right tools ahead of time eliminates most mid-transfer headaches. A wired connection between phones is optional but recommended for large data sets — it's faster and less likely to be interrupted than a wireless transfer.
Google One / Google Backup
Backs up Android contacts, app data, SMS messages, and settings to the cloud for restoration on a new Android device.
iCloud Backup
Creates a full backup of an iPhone — including photos, messages, app data, and settings — for restoring onto a new iPhone.
USB-C to USB-C (or Lightning) cable
Enables a direct wired transfer between two phones for faster, more reliable data migration.
Move to iOS / Switch to Android app
Official apps that facilitate cross-platform data migration when switching between iPhone and Android.
Use Wi-Fi, Not Mobile Data, for the Transfer
Phone-to-phone transfers can move several gigabytes of data. Always connect both devices to a stable Wi-Fi network before starting. Using mobile data risks hitting your data cap, slowing the transfer, or causing it to fail partway through.
Step-by-Step: Moving Your Data
Follow these steps in order. Each one builds on the last, so skipping the backup step — even if it feels like extra effort — removes your safety net for the rest of the process.
Back up your old phone
Before touching your new device, create a fresh backup of your old phone. On Android, go to Settings > Google > Backup and tap Back up now. On iPhone, go to Settings > [Your Name] > iCloud > iCloud Backup and tap Back Up Now.
This safety net means you can recover your data even if the transfer fails partway through.
Check your new phone has enough storage
Open your old phone's storage settings (Settings > Storage on Android; Settings > General > iPhone Storage on iOS) and note how much data you currently use. Your new phone needs at least that much free space, ideally more, to receive everything comfortably.
Use the built-in transfer tool during setup
The easiest window for transferring data is during the new phone's initial setup screen — don't skip past this.
- Android to Android: When prompted, choose Copy data from old device. You can use a cable or hold the phones back-to-back using NFC to initiate the transfer.
- iPhone to iPhone: Use Quick Start — hold your old iPhone near the new one and follow the on-screen prompts. You can also restore from an iCloud backup at this stage.
- Android to iPhone: Install the Move to iOS app on your Android device before starting setup on your new iPhone.
- iPhone to Android: Use the Switch to Android app, available on the App Store, during your new phone's setup.
Sign in to your accounts and verify apps
Once the transfer completes, sign in to your primary Google or Apple account if prompted. Most apps will restore automatically but may need you to log back in individually — this is normal and not a sign that data is missing.
Check that your most-used apps are present and open correctly. Some apps with subscriptions (such as streaming or productivity tools) may need reactivating under their own settings.
Manually migrate two-factor authentication apps
Authenticator apps store security codes locally and do not transfer automatically. Open your authenticator app on your old phone and look for an Export accounts or Transfer accounts option. Follow the app's specific process to move your codes to the new device.
If you can't access the export feature, log in to each linked account on a desktop browser and re-enroll your new phone as a trusted device.
Confirm contacts, photos, and messages are intact
Open your Contacts app and scroll through to spot any gaps. Open your Photos app and check that recent photos — not just older ones — have transferred. Open your Messages app and verify key conversation threads are present.
If anything is missing, your cloud backup from Step 1 is your recovery point.
Don't Wipe Your Old Phone Yet
Wait until you have confirmed every important file, contact, and app is accessible on your new device before performing a factory reset on your old phone. Restoring data after a wipe is difficult and sometimes impossible. Give yourself at least 24–48 hours of normal use on the new phone to catch anything you might have missed.
Two-Factor Authentication Apps Need Special Attention
Authenticator apps like Google Authenticator or Microsoft Authenticator do not automatically transfer to a new phone. Before switching, use the app's built-in export or account-transfer feature, or temporarily switch to SMS-based verification. Failing to do this can lock you out of important accounts.
After the Transfer: What to Check
Once you've worked through the steps above, spend some time using your new phone normally before making any irreversible decisions about your old one. Pay particular attention to:
- Banking and finance apps — these often require re-verification on a new device and won't work until you confirm your identity within the app.
- App-specific data — game progress, health tracking data, and in-app purchases may have their own restore processes separate from the phone's general backup.
- Wi-Fi passwords — on Android these may transfer automatically; on iPhone, nearby Apple devices can suggest them via iCloud Keychain.
The process is very similar to setting up a new computer. Our guide on setting up a new computer without missing anything important covers the same methodical approach if you're navigating both transitions at once.
Once everything checks out, take a moment to review your security habits on the new device. Keeping your smartphone secure outlines the everyday steps — screen locks, app permissions, software updates — that meaningfully reduce your exposure. For a broader view of getting the most from your phone long-term, The Full Picture on Smartphone and Tablet Ownership is a useful next read.