A:Answer Bring you new iPhone with the old iPhone to the Best Buy store (I suggest schedule an in-store consultation appt with the Tech Center). The Best Buy tech will insert a new SIM into the new phone phone, and transfer data. It is easier if you enable Icloud to transfer the data over. Also, you need some space on the old iPhone storage aka physical phone's memory and not the Icloud storage), to do the transfer. As long as the new phone is a bigger storage memory (like 256gb), the transfer is pretty fast and doesn't require much effort, the Tech will handle it. However, 3rd party Apps like WhatsApp may run into trouble if you have a lot of messages with large files/pictures/videos.