Shows the apple logo then goes black again, regardless of how many times I try, and isn't detected by my macbook. It's on an old operating system (don't remember which) but that shouldn't stop it functioning altogether.
iPhone 6
If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support
You might make an appointment at the Genius Bar to have the battery tested.
If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support
You might make an appointment at the Genius Bar to have the battery tested.
Hi
Turn iPhone off Make sure your pc is running the latest iTunes 12.7
Connect lead to USB on your pc.
Press just the power button down on iPhone don't let go Connect lead to iPhone keep power button pressed down until pc sees iPhone Then wait for restore you may need to do this more than once Before it works.
Cheers
Brian 🇬-1F1E7;
I had the same issue with my iPhone 5s. Your best bet is to take it in to a trusted repair place, they might be able to do something with it.
iphone 6 won't turn on
