It happened twice and I’m not yet sure, if it is a problem with the cable, with the Fairphone itself or that I just made an error. So the setup is the following:
I normally charge my Fairphone 4 over night. and thus just plug it in in the evening. As I enabled sleepmode if charging I see that this activates and do not think further. But on the other morning I see, that my phone did not charge.
From that information I conclude the following:
Android(stock OS) thinks it is charging, and reports at the corresponding icons
On the battery itself is not charging
Android does update the charge level, so that it goes downward (as expected by not charging)
What I know, is that the charging cable itself is a bit broken(the USB-C connector is bent) and I can think, that there may arises sometimes a problem.
Therefore I’m asking you, if somebody got the same problem here.
Have you tried other cables? It sounds like a poor connection due possibly to
a) distorted contacts in the phone or the cable, they have to match up. That a cable works elsewhere is no sign it is contact compatible with any specific device.
b) contacts could be a bit tarnished which benefits from plugging and unplugging as it can score through the resistive layer.
c) You could have debris, most likely in the port.
I think this could be a possibility. I will have to take a deeper look into it. It could also be, that the charger just gets old over those many years. (It’s a 5W charger)
But what comes to my mind is, that if that is the case, I must consider throwing away the charger, since it may break (Just remembering that if the charger cannot support 5W reliable over the time, it may become a fire hazard if it further breaks. )
After my FP(3) has fallen (for a very short moment) into the bathtube and after subsequent detailed drying without replacing parts, I have also registered failures during charging. Different options of the used charger and plug’s orientation drove me nuts. In the end, tasker helped to show me the current power level (amperage) during charging and thus shed light on the situation.
If the new cable does not fix your issue, come back to me if you’d like to know more about the related Tasker task.