Cell phone very very slow / short circuit, what to do?

So for a few days, my phone loads very very slowly (Huawei p10 lite). At first I thought the cable was the cause of the problem. Said, I did change my charger, 2 times, when I realized it was on my phone. When I use it during charging, the percentages of the battery do not go up but down. If I have him in flight mode, he charges, but only after about 6 H he is 100 percent. That's annoying for me personally because I use my phone very often.

And sometimes, during charging, it stops charging for 1 second, then it recharges for 1 second. And in a routine, so repeated until I plug the cable again, then it works again. I ask for help!

The error can be:

bad connection in the USB socket, clean with electronic contact spray.

(I suspect now most likely)

Or

a fault in the charging electronics of the mobile phone

"And sometimes, during charging, it stops charging for 1 second, and then it recharges 1 second, and in a routine, that is, repeatedly, until I reconnect the cable, then it works again. "

This indicates a defect in the plug of the charging cable or the socket on the phone, replace the charging cable once, and carefully clean the USB socket on the phone

https://www.hna.de/netzwelt/so-reinigt-man-handy-und-computer-anschluesse-richtig-zr-6753024.html

I just did that. It still does not work. My socket looks dirty with dust, can that be synonymous?

Thank you very much

The power socket? If so, then it can't be because it is rather the charging socket on the phone be ausgegenuckelt, you still have warranty on it, Huawei gives 24 months manufacturer's warranty on his cell phones?

I have Jap.

Then it has to be repaired, turn to the dealer or provider if it is a contract mobile phone, if you have it for more than 6 months then you can do it directly via Huawei if you have bought it, in a contract mobile as well as the provider to contact.

https://consumer.huawei.com/...nty-query/

Thanks for the star, greeting andie