Samsung to Samsung
Step 1: Open Smart Switch on your new and old device.
Step 2: Plug your OTG cable into your Note9 and micro USB into your old phone (If you are transferring from a device that does not have USB type C).
Step 3: Tap Receive on your new phone and then your phone will search through your transferable data.
Step 4: Un-tick anything you don’t want to transfer.
Step 5: Tap transfer and then you’re done.