Often, the phone is powered on but "frozen" with a black screen. A force restart can jumpstart the system.
Press and hold the Home button and the Power (Sleep/Wake) button simultaneously. iphone-6-no-power-solution-100-working
Use a toothpick or compressed air to remove lint from the charging port. Often, the phone is powered on but "frozen"
Keep holding both for at least 10–15 seconds until the Apple logo appears. 2. Check Charging Components iphone-6-no-power-solution-100-working
Go to product viewer dialog for this item. that won't power on, start with simple software and external hardware resets before moving to advanced board-level repairs.