How to Set Up a New Phone Without Losing Your Data
Move to a new phone safely by checking backups, transferring accounts, preserving authentication access, testing important apps, and wiping the old device last.
Keep the old phone until the new one proves itself
A phone migration involves more than photos and contacts. It may include authenticator apps, banking access, travel passes, health records, downloaded files, and messages. Charge both devices, connect to a trusted network, and make a fresh backup before starting. Do not erase the old phone as soon as the transfer screen says it is complete.
Check the backup date and the categories included. Some apps store data only on the device or require their own export. Write down account recovery options and make sure you can access your email before moving authentication tools. If a security key or passkey is involved, confirm that another sign-in method works.
Test the important paths
On the new phone, check calls, messages, contacts, photos, calendar, maps, password manager, banking, work tools, and any app needed for travel or health. Open files that matter offline. Confirm that notification, privacy, and backup settings match your needs instead of accepting every default.
- Keep recovery codes available during the migration.
- Revoke the old device from account security pages only after testing.
- Check that photos and files are actually available, not only listed.
- Remove the old SIM or eSIM only when the new phone connects correctly.
Wipe the old device deliberately
Once the new phone works for several days, sign out of accounts, remove payment cards, disable device tracking, and perform the manufacturer's erase process. Remove the physical SIM and check that no memory card remains. If you sell or give away the device, record its condition and avoid leaving a backup accessible to the next owner.
A careful migration has a slower first hour and a much smaller chance of discovering a missing account after the old phone is gone.