My 6S doesn't charge although it shows that it's charging

In a minute my iPhone stopped charging. Tried 3 different cables, tried plugging it into different things like my Mac, wall plug and even in the charger I have in my nightstand. When I plug the cable in it, it doesn't make any vibration, but shows me that the cable is in and that it does charge - but obviously it doesn't.

I tried almost everything that says the Apple Support topics but didn't want to get any deeper in it, 'cause I'm not too manually skillful to try some more harder solutions. I wanna hear if It might be a software or hardware problem or if nobody ever confronted this issue. Please help me asap, 'cause my phone is already out of charge. Authorized iPhone service is the last solution I'd like to face.

EDIT: There's no dust or anything in the port. Cleaned it out already.