iphone 6, lost calls and VoiceOver

Accessibility Advocacy

Verizon iPhone 6, ios 8.3 with VoiceOver enabled constantly. In the past two months I have begun losing calls within 5 seconds of accepting them, usually from other iPhones. I have done a complete reset, building the phone from scratch, only restoring contacts and calendar from iCloud. DO NOT DISTURB, LTE, and call blocking are disabled. These particular callers continue to be lost as long as VoiceOver is enabled, but are received perfectly id VoiceOver is disabled. I dropped back to my iPhone 5, ios 8.3, and don't have this problem. Any thoughts before I throw the 6 in the trash?