It doesnt have anything to do with a smart phone having 5g capability. It gets very involved with frequencies and wavelengths as far as damage or potential harm biologically and how those interact with certain materials like graphene oxide. That being said. 5g transmissions comes from towers, its out there spacially regardless of what kind of phone you have if you live in an area that has towers transmitting. Thats where manipulation and changes can occur and would be of any concern for threat. Towers. Which of coarse already has significant area coverage already.