To transfer data to a new phone without losing anything, use the setup transfer tool, then check the apps and accounts it may not fully restore. Keep your old phone until your chats, photos, passwords, authenticator codes, and phone number all work on the new one.
Before You Start: Make a Switch Checklist
Charge both phones, connect them to reliable Wi-Fi, and make sure you know the passwords for your Apple Account or Google Account. Update the old phone and important apps if updates are available. A cable can make some transfers faster, but you may need an adapter or a wireless option depending on the phones.
Check that the new phone has enough storage. Look at how much space the old phone uses, especially for photos, videos, and offline downloads. If you use cloud storage, confirm that recent photos and files have finished uploading. A backup that is still in progress cannot protect your latest changes.
Write down the things that need separate attention: chat history, authenticator apps, banking apps, work accounts, saved passwords, and your SIM or eSIM. An eSIM may need a carrier transfer or a fresh activation; our guide to switching phones with an eSIM explains what to check. Do not erase or trade in the old phone before the whole checklist is complete.
Use the Built-In Phone Transfer Tool
For iPhone to iPhone, follow the Quick Start prompts when you turn on the new iPhone near the old one. You can transfer directly between phones or restore from an iCloud backup. For Android to Android, follow the new phone’s setup prompts to copy from the old device; a cable is often an option. Samsung phones also offer Smart Switch.
For Android to iPhone, Apple’s Move to iOS app works during initial iPhone setup. For iPhone to Android, follow the Android phone’s setup instructions; available transfer methods and supported data vary by device. If you have already finished setup, check the phone maker’s instructions before resetting anything just to run a transfer again.
These tools can move many contacts, photos, messages, and settings, but they do not make the phones identical. Some apps must be downloaded again, and some require a fresh sign-in. Cloud restores also depend on available space and a completed backup. If iCloud is full, review ways to free up iCloud storage before relying on a new backup. Leave both phones powered and connected until setup reports that the transfer is finished.
Protect Chats Before Changing Phones
Do not assume that copying an app also copies its conversations. Open each chat app on the old phone and check its own backup or transfer settings. Make a fresh backup where the app offers one, and note which account, phone number, or cloud service it uses. If the app offers a direct device-to-device transfer, read its instructions before signing in on the new phone.
WhatsApp, Signal, and other messaging apps have different rules. A chat backup made for one phone platform may not restore on another. Some cross-platform moves require a specific process during the new phone’s initial setup, and some data may not be supported. Check the app’s current help instructions for your exact old and new phones rather than assuming a cloud backup will work.
After moving, open a few old conversations and check recent messages, photos, voice notes, and group chats. Also check any separate work or school messaging accounts. Keep the old phone available until you know the history you need is present or safely backed up. If a transfer fails, preserving the original phone gives you another chance to follow the app’s recovery steps.
Move Authenticator Apps and Save Recovery Options
Authenticator apps need special care because their codes protect access to other accounts. Before switching, open your authenticator app and look for its official transfer, export, or sync instructions. The right method depends on the app and its settings: some can sync codes through an account, while others require a device-to-device move or a new setup for each login.
Find the backup or recovery codes for important accounts, especially your main email, Apple Account or Google Account, password manager, and work accounts. Store recovery codes somewhere secure, separate from the phone you are replacing. If an account offers another trusted sign-in method, confirm that it still works. Never share authentication codes or recovery codes with someone who contacts you unexpectedly.
On the new phone, test a code by signing in to an account you can safely access. Check that the account accepts it before deleting anything from the old phone. Banking and work apps may also require their own device approval, even when your authenticator codes have moved. If you cannot access an account, use that service’s official recovery process rather than repeatedly resetting the old device.
Check Photos, Files, Passwords, and App Data
Open the photo library on the new phone and check both recent and older items. Some photos may appear as thumbnails while full copies continue downloading from the cloud. Also inspect albums, videos, screenshots, and any photos saved only inside another app. If you use cloud photo syncing, allow it time to finish before deciding something is missing.
Next, check the places a standard phone transfer can miss: the Downloads folder, local documents, voice recordings, notes, calendar accounts, offline maps, music, and files stored inside individual apps. Paid apps may be available again through the same store account, but their subscriptions and saved data can have separate sign-in or backup requirements.
Make sure your password manager or built-in password storage has synced, then try signing in to a few important services. Passkeys may sync through your account or need to be set up again, depending on where they are stored. Finally, review app permissions as you reinstall apps. Our iPhone privacy settings checklist can help iPhone users check access to location, photos, and other personal data.
Verify the New Phone Before Erasing the Old One
Once the transfer appears complete, use the new phone as you normally would. Place a call, send a text, and test mobile data away from Wi-Fi. Check that your number receives sign-in codes. If you use an eSIM or moved a physical SIM, confirm that the correct line is active, especially if you have more than one number.
Open your most important apps and look for missing information. Check contacts, recent messages, photos, email, payments, and any health or wearable data you rely on. Reconnect accessories such as earbuds or a smartwatch if needed. Notifications may need to be enabled again for certain apps. Give cloud libraries time to finish syncing, and investigate any missing item while the old phone still has it.
Keep both phones charged during this period; for longer-term charging questions, see our guide to iPhone battery myths. When you are confident the move is complete, follow the phone maker’s steps to sign out and factory-reset the old device if you plan to give it away. Remove a physical SIM and any storage card first. Do not rely on simply deleting photos one by one, especially while cloud syncing is enabled.
Quick Comparison: What Each Transfer Method Covers
No single method covers every kind of data. Use this comparison to decide what needs a second check:
- Built-in phone transfer: Best starting point for supported contacts, photos, messages, and settings. What moves varies by phone and platform.
- Cloud backup or sync: Useful when the old phone cannot stay connected to the new one. Check that the backup finished and that you can access the same account.
- App-specific transfer: Often necessary for chats, authenticators, and some health, banking, or work apps. Follow each app’s current instructions.
- Manual file copy: Useful for local downloads and documents that do not appear in cloud storage. Open copied files to confirm they work.
A practical order is to make a fresh backup, run the built-in transfer, complete app-specific moves, and then compare both phones. Keep a short list of anything missing and resolve it before resetting the old device. The goal is not just a successful setup screen; it is being able to find and use the data that matters to you.
Frequently Asked Questions
Will everything move automatically to my new phone?
No. Built-in tools move many common items, but chats, authenticator codes, app data, and local files may need separate steps.
Can I transfer data if my old phone has a broken screen?
A completed cloud backup may let you restore some data. Without one, your options depend on whether you can unlock and access the old phone.
Should I move my SIM before transferring data?
Follow the setup instructions for your phones and carrier. Keep the old phone able to receive verification codes until you have finished moving important accounts.
When is it safe to factory-reset my old phone?
Wait until you have checked calls, messages, photos, chats, authenticator codes, files, and important app sign-ins on the new phone. Then use the old phone’s official sign-out and reset steps.
Final Thoughts
A careful phone switch takes more than one transfer tool. Back up first, move chats and security apps deliberately, and check the new phone against the old one before erasing anything. That final comparison is the best way to catch what an automatic transfer missed.
