Charging JP 2026 does not work

Bug Reports
1

REPRODUCIBILITY: 100%
OS VERSION: 5.2.0.16
HARDWARE: Jolla Phone (2026)
UI LANGUAGE: Slovak
REGRESSION:

DESCRIPTION:

For two weeks charging worked without problems, I tried two Sony chargers, one for a Gemini PDA (1300 - 1500 mA), all worked well and without problems. Until today, 15.8.2026. Battery Buddy 4.4.0 beta 4 sent a notification when the lower limit was set to 22%, I connected the mobile phone to the charger but the current in Battery Buddy was still negative and low, even though after the release of beta 4, which also solves the minus sign when charging, I tested the application beta 4 and it worked correctly, without a sign and the current was about 1300 mA. To be sure, I also checked it in CSD, the result is the same, the mobile is in “charging” state, but the current is low (approx. 200-350 mA) with a negative sign (minus), i.e. the mobile is not actually charging.
Both the charger and the phone remained cold after an hour of connection/charging (they didn’t warm up as usual). I tried the chargers and cables on both X10II and X10IV, everything worked correctly. I blew out the socket on the phone, gently moved the cable, it didn’t help.

PRECONDITIONS:

Mobile connected to the charger

STEPS TO REPRODUCE:

  1. Connect the mobile phone to the charger

EXPECTED RESULT:

Charging with a current of approx. 1300 - 1500 mA

ACTUAL RESULT:

The mobile phone is in charging state (LED, status) but the current has a negative sign and has a low value (200 - 350 mA) as when discharging.

MODIFICATIONS:

ADDITIONAL INFORMATION:

The result is the same with AAS on and off
I also tried charging with the phone turned off

20260815_214023
20260815_2140231080Ă—1920 305 KB

20260815_223759
20260815_2237591080Ă—1920 383 KB

2

Does that problem persist after rebooting the phone?

Have you updated your phone recently?

Do you own a suitable non PD charger you could try? For example a 5V2A charger or something similar.

3

Yes, I have rebooted it several times

No

Yes, I only have non-PD chargers

4

It is the first time I hear of issues with non-PD chargers. Odd.

Just fishing in the dark here. Can you install AIDA64, what battery voltage does it show and what amperage is it showing when plugging in the charger? Does it change beyond idle fluctuation?

5

Before connecting the charger

Screenshot_20260815_230015_001
Screenshot_20260815_230015_0011032Ă—2272 153 KB

After connecting the charger
Screenshot_20260815_230120_001
Screenshot_20260815_230120_0011032Ă—2272 153 KB

No

6

Could there be damage to the cable? Can you try another cable, and also another device with the existing cable?

1 Like
7

I think there might be a problem with the cable or the adapter, since it isn’t showing any increase at all. I think the best option is to try it with a different cable.

8

I use several cables as I write in the description, they all work flawlessly on both X10II and X10IV

5 Likes
9

Could you maybe have set a charging limit through an app like Battery Buddy? You know, like the option where you set it to charge only up to 80% and not go any higher. Is it possible that you’ve accidentally limited yours to 16%?

10

I use 3-4 adapters, all have worked flawlessly on JP2 so far and still work on 10III and 10IV

11

That’s what I did first, stopped BB, now even uninstalled it, turned off border control in Settings…didn’t help

12

In which files can the set limits (lower and upper) for battery check be checked?

13

I did a bit of research for you. Apparently, the BB app can sometimes bug out and get stuck at a low-level charging limit. Could you try this in the terminal? What does the actual limit show as? Because the issue you’re having kind of seems like it might be getting stuck on a charging limit, but I’m not sure.

for d in /sys/class/power_supply/*; do
echo “=== $d ===”
for f in status online present current_now voltage_now input_suspend charging_enabled charger_disable bypass_mode constant_charge_current_max charge_control_limit; do
if [ -r “$d/$f” ]; then
printf "%s: " “$f”
cat “$d/$f”
fi
done
done

14

Should I copy/paste it into the terminal?
Or run by lines? I’m not good at it

15

Yes, you can copy and paste the whole block into the terminal at once; there’s no need to run it line by line. It only reads and displays the charging-related values.

16

It doesn’t print anything, I had to abort it

for d in /sys/class/power_supply/*; do
> echo “=== $d ===”
> for f in status online present current_now voltage_now input_suspend charging_enabled charger_disable bypass_mode constant_
charge_current_max charge_control_limit; do
> if [ -r “$d/$f” ]; then
> printf "%s: " “$f”
> cat “$d/$f”
> fi
> done
> 
> ^C

EDIT: I ran it as devel-su

17

for d in /sys/class/power_supply/*; do
echo “=== $d ===”
for f in status online present current_now voltage_now input_suspend charging_enabled charger_disable charge_control_limit; do
if [ -r “$d/$f” ]; then
printf "%s: " “$f”
cat “$d/$f”
fi
done
done

edit : Ah, I see the problem. The last done seems to be missing, so the terminal was just waiting for the command to be completed. Sorry about that. You did the right thing by aborting it.

18 
[root@JollaPhone2026 defaultuser]# for d in /sys/class/power_supply/*; do
> echo “=== $d ===”
> for f in status online present current_now voltage_now input_suspend charging_enabled charger_disable charge_control_limit; do
> if [ -r “$d/$f” ]; then
> printf "%s: " “$f”
> cat “$d/$f”
> fi
> done
> done

Nothing :frowning:

19

Did you press Enter after typing the code? I just wanted to help as much as I could. I’m not sure where I went wrong, I guess someone more experienced will be able to help.

20

He doesn’t use code-tags so the quotation marks gets borked.

for d in /sys/class/power_supply/*; do
    echo "=== $d ==="
    for f in status online present current_now voltage_now input_suspend charging_enabled charger_disable charge_control_limit; do
        if [ -r "$d/$f" ]; then
            printf "%s: " "$f"
            cat "$d/$f"
        fi
    done
done
5 Likes