⟐ Commented July 03, 2026 at 8:36 MST

⟐ Commented December 18, 2025 at 5:24 MST

#

⟐ Answered September 17, 2025 at 5:07 MST

⟐ Answered September 01, 2025 at 17:41 MST

It has a micro USB port so connects directly to my tablet.

I downloaded the CameraFI app but it won't auto recognize the camera.

What am I missing??

Other info:

-tablet is Model number: SM-T230NU

-android version 4.4.2

-kernal version: 3.10.0-6808427

dpi@swdd6509#2

⟐ Answered July 11, 2025 at 18:47 MST

⟐ Answered July 11, 2025 at 0:10 MST

⟐ Commented May 30, 2025 at 18:52 MST

⟐ Commented May 09, 2025 at 16:11 MST

⟐ Answered March 26, 2025 at 22:32 MST

I attempted to bypass the battery on my Samsung Galaxy Tab 4 T531 by directly attaching a 3.7V power source to the battery BMS, which I had previously removed from the battery. However, when I tried powering on the device, I observed a brief spark at the circuit pins, despite having verified that the terminals were correctly connected. I did not add any capacitors to the circuit. Could this be the reason for the spark, or is there something else that I may have overlooked in the process?

Thank you in advance for any guidance or troubleshooting advice.

Best regards,

⟐ Answer accepted December 03, 2024 at 0:17 MST

With the precharged battery, the tablet turns on now, but it won't charge. The battery is not red crossed.
When the tablet is off, I still get my boot loop with the flashing battery icon.

I've tried hard resets like Power + Vol Down/Vol Up, Home which I found in my research. Maybe there is one I missed, so help is appreciated.
Power down leads to flickering without a battery symbol (0.5s).

I've also had the idea that the power supplies may were insuficient. I used an external power supply to provide at least 5V and 2A (via the USB cable) Those are my observations:
- NO current draw when the tablet is on
- 0.08A up to 0.92A for a short moment when the battery symbol shows up
- 0.08A in recovery menu
- Flickering after powering down: 0.02A (constant)

Now it gets interesting: when the boot loop is started (cable connected) and the display ribbon is disconnected, the current rises from 0.92A to 1.15A (for short moments). So it uses more energy to NOT power the display than to power it.


I feel like there's a software issue but I've not yet found a solution for that. Can anyone help me with that?

Otherwise I see two options:

- Lower the voltage of the charger to 4V and directly connect the battery to it
- Power the tablet directly with 5V without the battery: I've done that with a phone before but since the tablet is not mine I'd prefer a safer option. The owner has agreed on risking it though (before he knew the tablet was starting with the new battery).

Help is very appreciated.

⟐ Answer accepted November 17, 2024 at 11:58 MST

Went to use my tablet the other day and pressed home button and the screen displayed as normal but in negative colours, isn't the negative setting in settings

⟐ Answered August 26, 2024 at 2:26 MST

⟐ Commented June 05, 2024 at 2:04 MST

I am working on my sisters Samsung galaxy tab 4 10.1 and it stops loading at the Samsung splash screen and just stays there. It won't even power off when I hold the power button down for 5 seconds, it just reboots and stops at the splash screen again. I can get to the hard reset screen by pressing and holding the power button, volume up button, and home button, and then select the power off option. I do plan on doing a factory reset but I first need to extract all of the important files my sister needs for work and other files and documents.

I have watched lots of videos on how to extract files from a tablet with the same problem I'm dealing with but there is one step you have to do first and that is turn on the debug mode, unfortunately none of the videos explain how to do that if you can not get past the splash screen.

So is there any way to extract the file and folders my sister needs or are the files lost forever and I should do a factory reset. I am hoping there is someway to extract the files.

Any help would be greatly appreciated.

Hi

This is as far as it gets.

⟐ Answer accepted May 05, 2024 at 19:46 MST

⟐ Commented April 02, 2024 at 13:17 MST

I have a Samsung tablet TAB 4 – SM-T530 which shows problem when charging: charging paused, battery temperature too low.

Do you know where the problem might be?

Do you know where the battery temperature sensor is located?

Do you know if the battery temperature can be overwritten in order to allow the charging?

Thank you in advance!

⟐ Answered March 18, 2024 at 4:49 MST

Stuck on white Samsung logo even after factory reset

⟐ Edited by author October 07, 2023 at 23:24 MST