Apple iPhone 6s Plus Call Failed Error: Why am I getting “Call Failed” error, cannot make outgoing calls on my iPhone? [Troubleshooting Guide]
Apple iPhone 6s Plus Speaker Problems: Static or noisy audio, poor sound quality, no sound, speaker not working [Troubleshooting Guide]
Why is my Apple iPhone 6s Plus screen flickering or showing other unusual display problems? [Troubleshooting Guide]