After considering back and forth, I consider get my hand on the newly-bought iPhone XS Max. However, I encounter some issues with the new device. First, the phone won't power on whenever I shutdown no matter how I press the side button. It can turn back on only if the phone is connected to wall adapter. Note: the phone have 40% battery. Second, the Imessage and Facetime cannot be activated. It said the the error occur during activation. I really appreciated if you could help me.