Incorrect.
https://www.att.com/features/mobile-transfer.html
"AT&T Mobile Transfer can be used to transfer your device contacts, photos, videos, music, call logs, SMS, MMS, and documents.
Note: Not all music and video formats are supported on all devices. Only DRM-free* music can be transferred. iPhone® video cannot be played by Android™ phones.
- iOS® allows the transfer of contacts, pictures, and video.
- Android allows the transfer of contacts, pictures, video, documents, music, and SMS, MMS, and call logs.
- Amazon Fire allows the transfer of contacts, pictures, video, documents, music, and SMS, MMS, and call logs."
You will not get apps, SMS, MMS, voicemails, health, app data, and more.