Modern phones make bulk transfer easy. Cable or Wi-Fi migration copies apps, photos, settings and accounts in an hour, and same-platform moves usually restore almost everything.
The gaps are predictable. Authenticator apps do not always move, chat histories live in their own backup rather than the system one, and some banking apps require a fresh setup on the new device.
The safest order is: back up the old phone, transfer authenticator codes deliberately, export chat backups, then run the migration and keep the old phone untouched for a week.
That waiting period matters. Most missing-data complaints are recoverable only while the old device still has the original data.