For the past 4 months the display screen flashes on and off unless I turn the Bluetooth off on my phone. Typically if I disconnect and reconnect my phone, the problem is resolved unless a call comes it at which point the display turns off, eliminating navigation or hands free calls while driving. I have disconnected the phone and reconnected it, forgotten the Bluetooth connection and then reconnected it after I turned off my phone (advice of the dealer) but it continues to flash on and off unless the phone is not connected at all. The dealer claims that it is a result of and IOS update.