Hi @LauraLoo11A - There are a few simple steps to follow:
- On your old phone, open the Fitbit app and remove the Alta. Also, remove it as one of the Bluetooth devices.
- On the new phone, install the Fitbit app. Sign in to your account. Then go to Account —> Add a device. This process will also connect your device to Bluetooth.
Please note: You should probably verify that your new phone is a Supported Device. That will determine which Fitbit features will work.