touch screen

Bij mijn iphone 7+ kan ik soms niets open doen de touch screen werkt soms niet, ook het scrollen niet Wat kan ik doen ?? Mvg DANIEL

i read about this a month ago after my iPhone 6Plus started acting odd. You will be working on the phone and the touch screen will randomly start to freeze and doesn't respond. Other symptoms are it won't sync with Bluetooth devices and wifi won't connect. As things start to degrade you miss...