'FX5 Hard OLED' Screens
Hard OLED quality is considered to be more fragile than soft OLED, but that percentage is decreased through higher quality materials and manufacturing processes than other Hard OLED panels.
'FX5 Soft OLED' Screens
FX5 Soft OLED is the same type of OLED used on original panels and is considered the highest grade of aftermarket OLED for iPhone screens.
'Service Pack' Screens
Service packs are brand new Genuine OEM panels directly from the device manufacturers supply chain. They are the highest grade of screen available for applicable devices.