Keep holding both for at least 10–15 seconds until the Apple logo appears. 2. Check Charging Components
Press and hold the Home button and the Power (Sleep/Wake) button simultaneously. iphone-6-no-power-solution-100-working
Use a known-working, MFi-certified Apple cable and wall adapter. Cheap, non-certified cables often damage the internal charging IC. Keep holding both for at least 10–15 seconds