Chosen Solution
My iPhone 6 doesn’t display incoming calls. What’s the matter?
My phone does the same thing sometimes. Would I usually do is a force reset by holding the power button and home button at the same time until the screen turns off. Don’t worry it won’t reset your phone. Than once it turns back on, try to call yourself again to see if it works. Also it might work to unplug your SIM card on the left side of the phone where that little hole is. You can put a tac or something thin in there. Wait about 30 seconds and put it back in to see if it works.
