If your iPhone 6 Plus 5.5" Inch cannot be charged via the USB charging port, this OEM Replacement Charging Port Headphone Jack Flex Cable with Mic may be helpful <br />It can also be used for replacing your broken, cracked or non-working earphone jack flex cable <br />Comes with microphone: can solve the problem of unsuccessful transmission of your voice to the other side of your phone <br />http://www.hytparts.com/005147-oem-replacement-charging-port-headphone-jack-flex-cable-with-mic-for-iphone-6-5-5-inch.html
