Getting a new phone should be exciting, and it is — right up until you realise something did not come across and you no longer have the old device. This guide covers how to transfer data to a new phone without losing anything, including the things that quietly do not transfer and that people discover far too late. It is the tutorial of UpdateArticles.
The One Rule That Prevents Every Disaster
Do not wipe, sell, trade in or reset the old phone until you have used the new one for at least a week.
Everything looks fine on day one. The problems surface on day five, when you try to log into your bank and discover your authenticator app did not transfer, or when you go looking for a photo from three years ago and it is not there.
If the old phone still exists, every one of these is an annoyance. If it does not, some of them are permanent.
Trade-in deadlines create real pressure here, and they are the reason people rush this. Take the week anyway.
Before You Start Anything
Three things, in this order.
1. Back up the old phone fully. Not “it probably backed up automatically” — go and check the date of the last successful backup. A backup that silently stopped eight months ago looks exactly like a working one, and this is depressingly common when free cloud storage quietly fills up.
2. Note which apps hold data that lives only on the device. We will cover these below. This is the step that saves people.
3. Make sure you know your account passwords. You are about to be asked to log into everything, and “it was saved on my phone” is not going to help you. If your passwords live in a password manager, make sure you can get into it — see our guide to the best password managers.
Android to Android
The built-in transfer is genuinely good. Start the new phone, choose to copy from an old device, and connect the two — with a cable if you can, because it is faster and more reliable than wireless.
It brings across apps, most app data, contacts, messages, call history, settings, and wallpapers.
What it handles poorly: apps that deliberately store data only on the device, and anything protected by device-bound security. More on those shortly.
For photos, do not rely on the phone-to-phone transfer alone. Make sure your photo library is fully backed up to cloud storage first, and confirm the upload has actually completed rather than assuming.
iPhone to iPhone
Bring the two phones near each other and follow the setup prompt. Direct device-to-device transfer is the most complete option, and an encrypted computer backup restored to the new phone is a very close second.
The critical detail: the backup must be encrypted if you want passwords, health data and Wi-Fi settings to come across. An unencrypted backup silently omits them, and people discover this at exactly the wrong moment.
Android to iPhone, or iPhone to Android
Both platforms provide official migration tools and they work reasonably well for the basics — contacts, photos, calendar, messages.
What does not survive a platform switch, and cannot be made to:
- Paid apps. You bought a licence in one store; the other store does not honour it.
- App data for anything without cross-platform cloud sync. Game progress in particular is frequently lost forever.
- Platform-locked services. Anything built around the ecosystem you are leaving.
Accept this before you switch rather than after. If a specific app’s data matters enormously to you, check before you buy the new phone whether it can move. That five-minute check has saved a lot of people from a very unpleasant surprise.
The Things That Quietly Do Not Transfer
This is the section people need and almost never read in time.
Authenticator apps. The most dangerous one by a wide margin. Many two-factor authenticator apps do not transfer their codes, deliberately, because that would be a security hole. If you wipe the old phone without migrating them, you can be permanently locked out of your own accounts — including your email, which is the master key to everything else.
Before you do anything else: open your authenticator app and use its official export or transfer function, or manually re-enrol each account on the new phone while you still have the old one. This is the single most important paragraph in this guide.
Messaging app history. Chat backups are often platform-specific and do not survive a switch. Some apps now support cross-platform migration; check yours specifically, and do it before you wipe anything.
Banking and payment apps. These typically require re-registration on the new device by design. Expect to re-verify, and make sure you can receive the verification — which brings you back to the authenticator problem.
Saved Wi-Fi passwords. Often transfer within a platform, rarely across one.
Files stored only locally. Downloads, documents saved outside cloud folders, files in obscure app directories. Nobody thinks about these until they are gone.
Offline media. Downloaded music, podcasts and films need re-downloading.
Game progress. If it was not linked to an account, it is gone. Link it now, on the old phone.
The Order That Works
- Migrate your authenticator app first. Before anything else. It gates everything.
- Back up the old phone and verify the backup date.
- Confirm photos are fully uploaded to cloud storage — check the count, not the reassuring message.
- Link any game or app progress to an account.
- Export chat history if your messaging app supports it.
- Run the official phone-to-phone transfer.
- Log into your password manager on the new phone.
- Re-register banking and payment apps.
- Use the new phone for a week with the old one still intact.
- Only then wipe the old phone — properly, with a factory reset, after signing out of your accounts.
Before You Sell or Trade In
Sign out of your accounts first, then factory reset. Signing out matters: on both platforms, an activation lock tied to your account can leave the device unusable for the buyer if you skip it, and you will be dealing with that by email a week later.
Remove the SIM and any memory card. It is remarkable how many people forget the memory card and post their photos to a stranger.
And do the reset, not just a delete. Deleting files leaves data recoverable; a factory reset on a modern encrypted phone genuinely destroys the encryption key, which makes the data unrecoverable.
Setting Up the New Phone Properly
Once the transfer is done, a little effort in the first hour prevents months of irritation.
Do not restore everything blindly. A transfer will faithfully bring across every app you have not opened in two years, along with their background processes and permissions. A new phone is a rare opportunity to start clean. Skip the apps you do not actually use — you can always install them later.
Review permissions as you go. The transfer often carries permissions with it, including ones you granted years ago and would not grant today. Set location to “while using” rather than “always” for anything that does not genuinely need continuous tracking.
Turn off notifications you do not need immediately, before the habit of ignoring them sets in. A phone that only interrupts you when it should is a genuinely better phone.
Set up your backup on the new device now, on day one, and verify it actually completes. Do not leave it as something to sort out later, because later is after the phone is lost.
If Something Did Not Transfer
You will discover something missing. Work through it calmly rather than panicking, and above all do not wipe the old phone.
If it is app data: check whether the app has its own cloud backup or export function that you can run on the old phone. Many do, and people never look.
If it is photos: confirm they are actually in cloud storage rather than assuming. Check the count on both devices — a backup that was “in progress” for months is not a backup.
If it is your authenticator: re-enrol each account manually from the old phone while it still works. If you have already wiped it, use your backup codes. If you have neither, you are into the account recovery process, which is slow, unpleasant, and sometimes unsuccessful.
If it is messages: some apps can restore from a local backup on the old phone if you act before wiping it.
Nearly every one of these is recoverable while the old phone exists. That is the entire reason for the one-week rule.
After the Transfer: The Checks People Skip
The transfer finishing is not the same as the transfer working, and the gap between those two is where people lose things permanently.
Do not wipe the old phone yet. Not for at least a fortnight. It is your only backup, and the missing thing you have not noticed yet is still on it. People wipe and sell the old device the same afternoon and discover the problem a month later, when it is unrecoverable.
Check your two-factor authentication first. This is the one that genuinely locks people out of their lives. Authenticator apps do not always migrate with everything else, and if your codes are gone and your backup codes were never saved, you may be locked out of your email — and therefore out of everything. Verify you can still log in to your important accounts before the old phone goes anywhere.
Check the photos actually arrived — all of them, including the oldest ones. Scroll back to the beginning, not just the recent ones on the first screen.
Check messages, especially attachments. Text usually transfers; photos and voice notes inside conversations frequently do not.
Check anything stored locally in an app. Notes, offline files, saved game progress and downloaded media are the classic casualties, because they live inside the app rather than in any cloud account.
Twenty minutes of checking, and a fortnight of patience before wiping, prevents the loss that people describe years afterwards.
Quick Reference: Phone Transfer Do’s and Don’ts
- Do migrate your authenticator app first — losing it can lock you out of your own accounts permanently.
- Don’t wipe the old phone for at least a week — the problems surface on day five, not day one.
- Do verify the backup date — a backup that silently stopped months ago looks exactly like a working one.
- Don’t assume paid apps or game progress survive a platform switch — they usually do not.
- Do sign out of accounts before factory resetting — activation lock will otherwise strand the buyer.
Frequently Asked Questions
What does not transfer to a new phone?
Authenticator app codes, messaging history in some apps, banking app registrations, saved Wi-Fi passwords across platforms, locally stored files, offline downloads, and game progress that was never linked to an account. The authenticator is the dangerous one.
How do I move my authenticator app to a new phone?
Use the app’s official export or transfer function, or manually re-enrol each account on the new phone while you still have the old one working. Do this before you wipe anything — otherwise you can be permanently locked out of your accounts.
Can I transfer data from Android to iPhone?
The basics — contacts, photos, calendar, messages — transfer with the official tools. Paid apps do not carry over, and app data for anything without cross-platform cloud sync is usually lost, including game progress. Check before switching if a specific app matters to you.
How long should I keep my old phone?
At least a week after you start using the new one. Everything looks fine on day one; the gaps appear on day five when you need something specific. With the old phone intact, every problem is an annoyance. Without it, some are permanent.
How do I safely wipe my old phone?
Sign out of your accounts first, then perform a factory reset. Signing out prevents activation lock stranding the next owner. Remove the SIM and any memory card. A factory reset on a modern encrypted phone genuinely destroys the data, unlike simply deleting files.
Final Thoughts
Transferring a phone is easy right up to the moment it is not, and the failures are concentrated in a small, predictable set of things that the official transfer tools do not handle. Move your authenticator app before you touch anything else, verify that your backup is actually recent, link your game and app progress to accounts, and above all keep the old phone alive for a week. Do those four things and the whole process becomes the pleasant, boring afternoon it should be.
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