I took it to a phone repair shop. The technician replaced the battery with a new, fully charged one.

The phone showed a green charging indicator light, so it appears to be receiving power.

However, when pressing the power button (or any button combination), the phone still does not turn on – there is absolutely no reaction, no logo, no vibration, nothing on the screen.

The repair technician suspects the problem might be with the motherboard (main board), but I would like a second opinion before proceeding with an expensive repair.Additional details:Model: Sony Xperia C4 Dual (E5333 / E5343 – dual SIM version)

The phone was not dropped, wet, or exposed to extreme heat/cold during storage.

No visible corrosion or damage inside when the battery was replaced.

Has anyone experienced a similar issue with an Xperia C4 (or similar Sony Xperia models) after long-term storage? Could it be a simple fix like a faulty power button, corrupted firmware, or a deeper motherboard issue? Any troubleshooting steps or repair guides would be greatly appreciated!

⟐ Commented January 17, 2026 at 23:55 MST

Translation Arabic - English

The phone stopped working after a factory reset

After the factory reset, the device completely stopped working and would not turn on.

⟐ Edited January 05, 2026 at 18:20 MST

I am requiring some expert advice on this problem, I was given an XZ from my friend with a cracked screen and charging problem, the charging port became temperamental and failing (at least I think it was that) and eventually wouldn't charge at all. The charging port was handled a bit harshly toward the end, for example the charging cable lifted up and down to try to get a charging response.

Anyway I ordered a screen/digitizer and charging port flex for it, and fitted them, following a guide. Before this, the phone had around 2% charge. After the repair, I switched it back on and conncted the charger, the screen was fine, however there was no response from the charger. The phone then ran flat and eventually ran flat enough to not be able to show the "low charge" symbol when the phone is off. Then after plugging and unplugging the cable (via USB in the pc) it would charge for what seemed a second then stop, the red charging notification light was lighting up. The same happened with a wall charger. I then stripped it back down and back together again. This time there was no response if I remember right, then I connected it to the wall charger and left it for 3 hours or so. I went back to it and it had charged up to 15%.

Now i'm at the point where the phone is working, it's on 90% now, but it charges very slowly, around 60-350 mA per hour on Ampere app. So a full charge is around 12+ hours. This is in the wall socket with a fast charger. Additionally, it takes 10 seconds for the phone to recognise the charger after is is plugged in and that is consistent each time I plug it in. The phone now isn't recognised by my PC via USB, and also won't charge that way also, it just doesn't do anything if I plug it in there. Other than that, the phone works and it holds its charge well.

Any ideas? Thank you.

2 Pics of battery app:

imgur.com/a/YnNtp

⟐ Commented December 30, 2025 at 2:35 MST

⟐ Commented November 23, 2025 at 10:27 MST

Translation Indonesian - English

My camera is having problems. When I point it at a light or bright light, a line immediately covers the lens. How can I fix this?

⟐ Edited November 22, 2025 at 12:48 MST

Translation Persian - English

Turns off and on

⟐ Edited October 14, 2025 at 12:25 MST

⟐ Commented October 04, 2025 at 22:50 MST

⟐ Commented August 31, 2025 at 4:25 MST

Translation Spanish-English

Why won't it connect to data, Wi-Fi, or Bluetooth?

⟐ Commented August 14, 2025 at 18:07 MST