My iPhone 6 is stuck on the apple logo?

I can't find anything on apple forums that helps. It's been playing up for a few days, and I'm assuming that is because it is full. I have been deleting photos and apps, and was planning on putting all data onto my Macbook today, however this has happened. It would crash on most apps I clicked on or would be very slow, I restarted it today and as it was restarting and the apple logo came up for it to turn back on, the screen went black. I've tried charging it and plugging it into my computer but my computer isn't responding to it being plugged in and it will not get past the apple logo? Can anyone help?

Hi so it needs taking to a phone shop chances are the charger has failed to charge the battery so you need a new charger.

"My iPhone 6 is stuck on the apple logo… My computer isn't responding to it"

The computer can't possibly respond to any phone, until you get it to fully start and can sign in.

Try these two:

Force restart…
On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo.

Restore your device to factory settings…
- Open iTunes on your Mac or PC. If you can't access a computer and your device still works, you can erase and restore your device without a computer.
- Connect your iPhone, iPad, or iPod to your computer with the cable that came with your device.
- If a message asks for your device passcode or to Trust This Computer, follow the onscreen steps. If you forgot your passcode, get help.
- Select your iPhone when it appears in iTunes. For an unresponsive device or one that won't turn on, see the 1st link below. If your iPnone doesn't appear in iTunes, click the 2nd link below.
- In the Summary panel, click "Restore iPhone".