Phase105 · Migration & Erase Safety Gate
Do not erase the old phone just because data “seems transferred”
Separate backup, cellular service, SMS authentication, passkeys, 2FA, LINE, Wallet and critical apps, and keep old-device erasure as the final step.
550device / sales records
515smartphone records
121iPhone
394Android
Select source/target and complete the erase gate
Do not enter credentials
Do not enter phone numbers, SMS/2FA/recovery codes, passwords, eSIM QR data, IMEI/EID/ICCID. Select status only.
Select the source device to show details.
Select the destination device to show details.
Checks before erasing the old phone
Old-device erase state
Old device available
Backup
Data transferred to new phone
Primary Apple/Google account
Current SIM type
Cellular line on new phone
Voice calls
SMS / authentication SMS
Mobile data
Use passkeys/saved passwords
Actual passkey/password sign-in on new phone
Use authenticator app / 2FA
Authenticator verified on new phone
Alternative 2FA / recovery method
LINE used
LINE account/history verified on new phone
Use Wallet/transit/payment services
Wallet/payment verified on new phone
Critical apps
What happens to old phone
Why the order matters
Apple states that supported carriers can transfer eSIM from the old iPhone and that the old SIM is deactivated after the plan activates on the new iPhone.
Google Pixel can move SIM/eSIM during or after setup on supported devices/carriers; otherwise a carrier activation/reissue route is required.
LINE documents QR-based transfer when the old phone is available and states that cross-OS transfer restores the most recent 14 days of chat history.
- Backup and account recovery
- Data transfer
- SIM/eSIM migration and voice/SMS/data testing
- Actual sign-in for passkeys, 2FA, LINE and critical apps
- Device-bound Wallet/payment services
- Erase/sell/trade in the old device