What's wrong with my new iPhone 6?

I got a new iPhone 6 on June 25. It started charging really weird. If use it while it's charging it dies slowly instead of charging. What's wrong with it? Can I fix it?

The battery is decreasing when its on charge but the charging symbol is there? That sounds like my ipad, if youre using your phone when charging then try not to, just leave it to charge for a bit… Might have to get a new charger

Typically it's either a faulty phone or a faulty Lightning cable.

Both will still be covered by the AppleCare warranty. I suggest that you use it. Back up your phone fully on iTunes beforehand as if the phone is faulty it's most likely going to be replaced with a new one. You can then restore the backup to the new phone and have a fairly fast and painless changeover.

Not enough amps while charging, try switching your stuff out, but I'd recommend going to the Apple Store and getting it replaced. It is covered by warranty for year.