This release does not have a Play Store Description, so we grabbed one from version 3:

Mi Mover helps you move your apps and data from an old device to a Mi Phone.

Features:

• Multiple data formats supported: Transfer contacts, messages, photos, music, videos, documents, installed apps, and other data.

• Easy-to-use: Pair two devices using a QR code and start transferring instantly.

• Speed: Connection speed up to 6MB/s, even faster than restoring data from cloud backup.

• No wires, mobile data, or internet required: The new device acts as a Wi-Fi hotspot during the transfer.

• Security: Your two devices are connected directly so your data won't be exposed to any third party apps or phones.​