A7 "SM-T500" Charging issues since Sept update

[archive.ph]

Greetings. First of all I'm a normie not a techie and I don't understand half the threads in this forum!

Then, first week of Nov, I updated the software after being prompted. But I'm not even sure if that was an Android update or a Samsung update. All i know is that i lost my screen brightness slider, my volume control for my music streaming, and — most critically — my battery no longer charges properly. Before the update the battery & charging were normal. Now i can't charge properly (or completely) no matter how long it's plugged in.

Things I've tried so far include:

1. Different cables, outlets, and chargers

2. Optimized settings, disabled notifications, put apps to sleep

3. Force restarts

4. Safe mode

5. Tried charging while device is powered off/on.

Please see graphic below. The extreme discontinuities (crevices) relate to charging when the device is OFF. Yes, it now loses charge if I keep it plugged in while turned off. However, it's now been plugged in for weeks and still hasn't charged fully.

Advice welcome. I'm at my wits end with this device. (BTW, I have another Galaxy Tab which is working (and charging) normally. I didn't update its software.)

 

[lewmur]

Greetings. First of all I'm a normie not a techie and I don't understand half the threads in this forum!

Then, first week of Nov, I updated the software after being prompted. But I'm not even sure if that was an Android update or a Samsung update. All i know is that i lost my screen brightness slider, my volume control for my music streaming, and — most critically — my battery no longer charges properly. Before the update the battery & charging were normal. Now i can't charge properly (or completely) no matter how long it's plugged in.

Things I've tried so far include:

1. Different cables, outlets, and chargers

2. Optimized settings, disabled notifications, put apps to sleep

3. Force restarts

4. Safe mode

5. Tried charging while device is powered off/on.

Please see graphic below. The extreme discontinuities (crevices) relate to charging when the device is OFF. Yes, it now loses charge if I keep it plugged in while turned off. However, it's now been plugged in for weeks and still hasn't charged fully.

Advice welcome. I'm at my wits end with this device. (BTW, I have another Galaxy Tab which is working (and charging) normally. I didn't update its software.)

Late model devices need to be turned on while charging. The smart charging routines are embedded in the firmware and the device needs to be on to run them. Download the AMP app from Play Store and run it while charging and it will show the rate of charging. Post the results. You can turn the screen off for a little faster charging.

 

[archive.ph]

Thanks for your response. Wasn't sure which amp meter to choose so I selected the one with the highest rating.

The charging rate seems very slow, though I don't know what's normal. The adapters show 2A and 3A ratings.

Never knew the tablet should be on while charging. Mine made some headway overnight while off, but lost that and much more after I turned it on again. It's now been plugged in for weeks. Next I'll put it in airplane mode so it doesn't search for a signal.

 

[archive.ph]

Here's the fastest I've seen so far. Still doesn't seem like much.

None of this addresses why it all changed upon applying the September update. Everything was fine before then.

 

[archive.ph]

As you can see, the trend isn't good around here.

 

[lewmur]

Here's the fastest I've seen so far. Still doesn't seem like much.

None of this addresses why it all changed upon applying the September update. Everything was fine before then.

That is nowhere near what it should be. Do you know how to flash the latest stock ROM with Odin? Sept isn't the latest.

 

[archive.ph]

Unfortunately I have no idea how to do that.

I do have a new max and min though

 

[lewmur]

Unfortunately I have no idea how to do that.

I do have a new max and min though

edit: Have you tried updating via settings? Do that first.

If that doesn't, your only option is to try a factory reset. But first, make sure you know your Google Account name and password. You will need them the first time it reboots. You won't lose any photos, videos, music and such but you will lose contact, settings and any apps you have installed. To factory reset click the Settings icon and goto /Settings/General Management/Reset/factory reset. If that doesn't work, then you will have no option but to learn how to connect the tablet to a PC and use Odin to flash the latest firmware.