This IC allows the touchscreen to communicate with the phone.
U2401 in the iPhone 6 and 6+
U12 in the iPhone 5, 5C, and 5S
U6600/U6650 in the iPad Air
U4100/U4150 in the iPad Air 2
U4301 in the iPhone SE
Typically, on the iPhone 6/6+, your issue is with Meson,not Cumulus, so think before you buy this
