MyPhone INFINITY IIS Charging Issues: Random Charging Moments, Battery Level Fluctuations

My phone does not charge, but rather charges, but at completely random moments, usually not when it should.
For example, at night from Tuesday to Wednesday, it did not charge, the battery level dropped (same from Wednesday to Thursday, but less drastically, I attach a screen). On Wednesday at school, I plugged into every outlet and the phone was charging at absolutely random times. In one lesson, the battery level increased by as much as 27%, and in the next two lessons it fell again (unfortunately I do not have skrins from that day, but the chart was top and bottom).
It is not the charger's fault, another phone has charged very quickly, and other chargers have no effect.
What can cause a problem? Battery, usb socket, phone itself?
By the way, I have a second question
If the factory charger has a current of 1A, and I use a charger with a current of 1.2A, something will happen except that it will charge faster?

Niemampomyslunanazwe wrote:

I attach a skrin).

Where is he?

Niemampomyslunanazwe wrote:

It is not the charger's fault, another phone has charged very quickly, and other chargers have no effect.

And did you replace the cable?

Niemampomyslunanazwe wrote:

What can cause a problem? Battery, usb socket, phone itself?

It's hard to guess. Install the Ampere app and check on various chargers and cables whether and what current they charge. Also check if it is charging by connecting the phone to the computer.

Niemampomyslunanazwe wrote:

If the factory charger has a current of 1A, and I use a charger with a current of 1.2A, something will happen except that it will charge faster?

The charging process is controlled by the phone, nothing will happen. It doesn't charge faster even if you gave a 5A charger. It is important that the charger has a 5V output.

Actually, I forgot to add skrins (I hope it will come out now, because it will be a little bit, I have a lot of cables and adapters, of course I will not test everything because it is senseless, millions of combinations come out).
This is a "loading" screen

After downloading ampere, I tested the factory charger first (1A)

Then I used an old Nokia charger that has no split between cable and adapter (1.2A)

Combination of the original adapter + unspecified cable

Combination of unspecified adapter (1.1A) + original cable

Combination of unspecified adapter + unspecified cable

Out of curiosity, I checked the same on another phone - in the case of the Nokia charger and the factory set, the results were completely different, while the rest rather coincided.
Of course, I do not need to add that the battery did not charge at all during these tests.

Where you had over 800mA there is no whip the phone is charging. It is clear that there is something wrong with the factory, I suspect the cable. 270mA is not enough and over 600mA I think it can also be on the border, so if you don't use it, it should slowly charge.

Well, here is the problem, because I use this set which gives me over 800 and so from about 10.00 is 41% and does not go up (I did not use the phone).

The phone was lying unused during charging?
On the screenshots you have 30% battery, what did you charge it to these 41%?

On the screen I have 30%, but then it charged to 41%, with this option with some adapter and a cable, but then it shifted to charge, even at times it was not displayed that the charger was connected.

Niemampomyslunanazwe wrote:

but then he shifted

What he did?

Niemampomyslunanazwe wrote:

even sometimes the charger was not displayed.

Well, maybe the socket in the tel you have damaged or does not connect in the sense that it has fallen off partially from the pcb.

One hundred percent faulty battery. The best part is that you won't buy it anywhere at the moment. I combined with a battery from some Samsung as in the attachment. At the beginning the original battery gave similar symptoms and later it swelled like a balloon.