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Moving Everything to a New Phone

by MASTER
A new phone from a Black Friday deal or a holiday gift is only an upgrade if your photos, contacts, chats and two-factor codes arrive with it. Set aside one evening before you start using the new phone, while the old one still works.
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Moving Everything to a New Phone

Secure two-factor codes before anything else

Photos and contacts usually sit in iCloud or Google already, so they are hard to lose. The thing that actually locks people out is a two-factor authenticator app that never made it to the new phone. Before you touch the new phone, open every authenticator app and check how it moves:

  • Google Authenticator: turn on cloud sync with your Google account, or use Transfer accounts to show a QR code.
  • Microsoft Authenticator: turn on Cloud backup (iCloud on iPhone, a personal Microsoft account on Android). Its backup does not restore across iPhone and Android.
  • Authy and similar apps: confirm backups are on and that you know the backup password.
  • Bank apps and some work authenticators do not transfer at all. You will re-register them on the new phone with an SMS or email code.

Write these on paper, so nothing depends on the old phone working:

  • Your Apple ID or Google password.
  • Your carrier account PIN.
  • Any backup codes for email and banking.

Pick your transfer path

  • iPhone to iPhone: Quick Start, with the two phones held next to each other. Use a cable if you have more than about 100 GB of data or slow Wi-Fi. That means USB-C to USB-C, or USB-C to Lightning if one phone is older. Two Lightning iPhones also need Apple's Lightning to USB 3 Camera Adapter.
  • Android to Android: Copy apps & data during setup, or Samsung Smart Switch. A USB-C to USB-C cable is much faster than wireless.
  • Android to iPhone: install the Move to iOS app on the Android phone. It is also the official way to carry WhatsApp chats across.
  • iPhone to Android: use the cable option during Android setup, the Switch to Android app (Pixel) or Samsung Smart Switch. Turn off iMessage and FaceTime on the iPhone before its SIM leaves it, or texts from iPhone users will silently go missing.
  • Old phone dead or lost: choose restore from iCloud or Google backup during setup. This only brings back what was backed up.

If your iCloud storage is too small for a full backup, skip buying a plan. On the old iPhone, go to Settings > General > Transfer or Reset iPhone > Prepare for New iPhone. That gives free temporary iCloud space for about 3 weeks. Google One includes 15 GB free.

Spend time on prep, not on watching the progress bar

The shortcut experienced people use: back up the night before. Run the iCloud or Google backup and the WhatsApp chat backup on Wi-Fi while you sleep. The next day only the direct transfer is left.

Signal is different: it has no cloud backup on iPhone. It moves chats only through its own transfer screen when you register on the new phone. Keep the old phone next to you, and do not skip that screen.

During the transfer:

  • Keep both phones on chargers.
  • Stay on home Wi-Fi.
  • Do not use either phone.

A transfer of 64–128 GB commonly takes 30–90 minutes. Do your SIM, eSIM and app logins after it finishes, not during. Payment cards in Apple Pay or Google Wallet need re-adding, with a bank check by text or app.

How to tell it worked

Compare numbers, not impressions:

  • The photo count in Photos or Gallery matches the old phone, give or take a few.
  • The contact count matches.
  • Your chats show messages from last week.
  • Each two-factor entry produces a code that actually logs you in.
  • A test call and a test text both go through.

Keep the old phone unwiped for two weeks, or until a few days before your trade-in deadline (many holiday deals give 14–30 days). Before you hand it over:

  • iPhone: sign out of your Apple ID, which also turns off Find My.
  • Android: remove your Google account.
  • Then factory reset. Otherwise Activation Lock can void the trade-in credit.
⏱ 2시간 20분★ 보통
현재
Your photos, contacts, chats and two-factor codes all live on the old phone, and the new phone is still in its box or on the setup screen.
난관
People factory reset or trade in the old phone the same day. Then they discover Google Authenticator or a bank app never transferred, and they get locked out of email or banking. Another common miss is switching from iPhone to Android without turning off iMessage first, so texts from iPhone friends quietly stop arriving.
기대
The new phone has the same number of photos and contacts, your recent chats, working calls and texts, and every two-factor login. The old phone sits untouched in a drawer as a backup.
대응 지침
  • When an authenticator entry shows up blank on the new phone, or a site rejects the code
    →
    Log in on the old phone or with a saved backup code, then turn two-factor off and back on for that site so you can scan a fresh QR code on the new phone.
  • When the transfer progress bar has not moved for 20 minutes
    →
    Restart both phones, connect them with a cable instead of wireless, and start the transfer again. The old phone's data is not touched by a failed attempt.
  • When WhatsApp on the new phone says no backup was found
    →
    Stop before verifying your number. Go back to the old phone, run Settings > Chats > Chat backup manually, and confirm the new phone is signed into the same iCloud or Google account.
준비물
도구
  • • Old phone — 1 pcs
  • • New phone — 1 pcs
  • • Transfer cable — 1 pcs
  • • Chargers — 2 pcs
  • • Paper and pen — 1 set
단계
  1. 01
    List accounts and secure two-factor codes
    Open every authenticator app, turn on its cloud backup or export option, and write your Apple ID or Google password, carrier PIN and email and bank backup codes on paper.
    ⏱ 20분
  2. 02
    Back up the old phone and chat apps
    Run the iCloud backup (use Prepare for New iPhone if space is short) or the Google backup, plus the WhatsApp chat backup, on Wi-Fi with the phone on a charger, ideally the night before, and check that the 'last backup' time shows today.
    ⏱ 15분
  3. 03
    Run the phone-to-phone transfer
    Use Quick Start, Copy apps & data, Smart Switch, Switch to Android or Move to iOS with both phones on chargers, and leave them alone until the new phone reaches its home screen, usually 30–90 minutes.
    ⏱ 1시간
  4. 04
    Move the SIM and sign back into key apps
    If you are leaving an iPhone for Android, first turn off iMessage and FaceTime while its SIM is still in. Then activate the eSIM or move the physical SIM and confirm an SMS arrives. Reopen authenticator, banking, email, Signal and payment apps one by one and finish each SMS or email verification.
    ⏱ 30분
  5. 05
    Verify counts and park the old phone
    Compare photo and contact counts on both phones, make a test call and text, and log in to one account with each two-factor entry. Then store the old phone unwiped and still signed in for two weeks or until shortly before your trade-in deadline.
    ⏱ 15분