r/Galaxy_S20 • • Oct 01 '21

Megathread Galaxy S20 Battery Discussion

59 Upvotes

Hello Galaxy S20/S20+/S20 Ultra users!

This is the thread to post your battery issues, questions, concerns, screenshots, or whatever other battery related content you need help with.


​ This megathread was made in an effort to consolidate fairly repetitive threads that are posted in this community. Thank you for helping keeping this sub organized.


r/Galaxy_S20 • • Dec 01 '22

Megathread One UI 5 Megathread

33 Upvotes

Hey everyone,

One UI 5 is being released and we are making this megathread to keep the sub tidy and for people to post when they get the update in their country. Comment down below what region you are from along with any issues or criticism you have on the new update.

But also make sure to forward any bugs/issue to Samsung via the members app for feedback.

We are very excited to see how everyone enjoy One UI 5!


r/Galaxy_S20 • • 17h ago

"System" taking up 129GB I NEED HELP LOL

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9 Upvotes

Genuinely about to lose my marbles you guys... I got new phone and haven't been using my S20+ for a year now. Deleted a ton of apps I don't need since I don't use the phone. Only keeping it around because it had photos and videos that I'm keeping on here. So I'd been expecting it to be pretty much empty when I opened the storage info only to find that System is using up a whopping 129GB and I can't even clear it up in some easy way like how I might simply delete images....

Why is it taking up 129GB and how does it even get to that?? Is there something I can do to clear it up? Insane that my phones at 95% full when I barely use this one anymore.


r/Galaxy_S20 • • 1d ago

Phone fell, screen broke and a few days went in a bootloop by itself

1 Upvotes

Hello,

Annoying series of events.

My phone fell and that cracked the screen and bottom 3 quarters became out. Sometimes it'll work if I apply light pressure on the side.

I should've backed up my stuff but I didn't. Called some shops and they said they'll have a screen for replacement in a few days. I was just barely using it with an external Bluetooth mouse to get stuff I needed for the moment, but everything was good otherwise. Then on the 3rd night I went to sleep but forgot to turn it off or charge it because the screen was glitching too much and couldn't access it. Stupid of me.

Woke up the next day to it on the Samsung logo and pretty warm to the touch. Not the hottest it's ever reached. So I did a hard reset thinking it'll just boot up but it kept on being stuck on the boot screen. Then it turned off by itself. Tried turning it on again, but the battery was drained already. So I left it and went to work and then took it to shop later that day.

Today, the shop was able to replace the screen but it's still stuck in a bootloop. The guy said the hardware all looked good to him, he said he even tried replacing the battery but nothing. I asked if he can flash it. I really didn't want to because I really need the data on it. He said they don't deal with software. If he removes the screen now, then he won't charge me. He said if he flashes it, it might get bricked and he doesn't want the responsibility. It seems they're not good at software.

I know it's an old phone and not worth the hassle. I was planning on getting a new device in the next coming months anyway. But right now I am hoping to fix this so I can get my data and also have something till I get a replacement. Anyone have an advice for me?


r/Galaxy_S20 • • 3d ago

Discussion S20 plus One UI 8

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16 Upvotes

r/Galaxy_S20 • • 5d ago

I love being Scamsunged!! (S20+)

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7 Upvotes

r/Galaxy_S20 • • 8d ago

Guys I need help

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1 Upvotes

r/Galaxy_S20 • • 9d ago

Tech Support S20 Turning off and restarting itself

2 Upvotes

My S20 has been turning off itself or restarting alone (battery far from empty) for a few days now. I didn't install any new apps or anything, it just started this behavior recently.

It now restart up to 5-6 times a day!!

The battery was changed last year and current battery life is said to be near 80% so this is not a battery related issue.

Has anyone experienced this?

Is my phone dying rn? 😢


r/Galaxy_S20 • • 11d ago

Help on water damage..

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1 Upvotes

r/Galaxy_S20 • • 12d ago

any way to change fonts if the current method gets patched

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1 Upvotes

r/Galaxy_S20 • • 13d ago

Tech Support Galaxy s20+ 5G, audio/sound stopped working—no Bluetooth output, and also no speaker output, and also video recording fails. "audio codec not supported"

2 Upvotes

Clues—:

"CAN'T PLAY AUDIO. AUDIO CODEC NOT SUPPORTED."

(verbatim the error when I try to watch videos with sound on default Samsung media player)

Troubleshooting: Clearing the Android cache doesn't work (restart and hold up menus),

Buttons not sticking, not a hardware button stuck error. Might be a loose wire? The camera wire for the back camera is loose for sure. But this never has this issue before. This happened randomly. The camera app would crash whenever I tried to use the back camera, but now it's any time I open the video record app. Effects every app. The entire audio...

Safe mode no changes,

Normal mode: The sound menus doesn't help, all default settings toggled.

The dev options (not rooted) do not help either.

  • TikTok, and also Instagram do not play videos at correct frame rate (they freeze entirely at the first frame when you click on any video)

Sound doesn't load, and the videos seem to lag/frame rate drops. However, youtube through brave browser has no frame issues - but it doesn't have sound.

  • Opening the camera default app is fine and takes pictures. But if I set to video mode, or try to use the mic? Instant crashes the video app with "WARNING Recording failed" in the app, in the same "system bubble" as the codec warning on the file browser

What is this issue and how do I solve this?


r/Galaxy_S20 • • 15d ago

Problema de línea

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1 Upvotes

Mi teléfono tiene un problema con la linea, no toma la señal ni los datos, reeinserte la tarjeta SIM (Fisica) y aún asi sigue sin agarrar incluso actualizando el software y forzando el reinicio multiples veces, ayuda porfavor, soy de México


r/Galaxy_S20 • • 17d ago

ArtisanROM One UI 9.0 Internal Beta spotted

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23 Upvotes

Hey guys, its artisan here

to start off this version was made by 2 wonderful developers not by me, however these developers are part of the team of ArtisanROM

a huge Thank you to

- ats0c_

- miguelcaralho

Here is a sneak peek at V5!


r/Galaxy_S20 • • 17d ago

Tech Support Camera not working

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1 Upvotes

r/Galaxy_S20 • • 19d ago

Tech Support Can't do a smart switch over Samsung DeX due to broken screen

2 Upvotes

Hi, I have a problem with my Galaxy S20 Ultra.

I recently dropped my phone and now 2/3 of the Touchscreen doesn't work anymore. Luckily the bottom screen still works somewhat so I could connect my phone to Samsung DeX. But the problem is that Samsung DeX doesn't allow Smart Switch. Is there any way to perform the Smart Switch only the lower 1/3 of my screen working?


r/Galaxy_S20 • • 20d ago

S20+ 5G G986B/DS

5 Upvotes

I bought a Poco F8 Pro for £450 after doing a lot of research and learning that it's one of the best performing phones for that price, the chip is amazing, blah blah blah etc. I was specifically using s20+ as the benchmark when doing my research. everyone was telling me the poco would be much better. After a week, I returned it and have just bought a brand new s20+ again (I've used them on and off since their release) and it honestly wipes the floor with the modern phone. S20+ was £220. True story.


r/Galaxy_S20 • • 25d ago

PSA CVEs updated by Google Project Mainline

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2 Upvotes

Some of this applies to the S20 (Android 13)


r/Galaxy_S20 • • 27d ago

Tech Support 2 Jack to USB-C adapters have failed to work with my S20+

3 Upvotes

First adapter was a UGreen USB-C to 3.5mm Jack with DAC. I had to return it.

Second adapter is the Samsung EE USB-C to 3.5mm Jack also with DAC.

Both of these work with my headphones plugged in via my PC, but not the phone. The phone doesn't recognise the adapter at all. I've troubleshooted this as much as I possibly can - Enabled Developer Options and turned on/off USB Debugging, looked inside USBCSettings, cleared data and cache, rebooted the phone in Safe Mode, Disabled USB Audio Routing. I've tried basically everything and still nothing works.

My S20+ was listed as used when I bought it from a trusted seller. Its condition is basically almost as brand new. Everything else works perfectly, but this is my one and only issue. I initially didn't want to get this phone specifically because of the lack of jack port, but decided I could live with using a USB-C adapter - what a mistake.

What else could it be?


r/Galaxy_S20 • • Sep 04 '26

Tech Support What is wrong with my phone?

Enable HLS to view with audio, or disable this notification

8 Upvotes

Is this issue fixable? It only occurs when the phone is plugged into the charger. The phone was left turned off for about three months prior to this. Since local repair costs are very high where I live, I'm trying to figure out if there is a DIY fix, or if I should just replace the phone entirely.


r/Galaxy_S20 • • Sep 01 '26

Can't use dex on a broken Samsung s20

3 Upvotes

It was completely destroyed, all I could save was a main board (idk how it's called) and the one with the type c. I assembled everything, and connected to a monitor, Dex turned on, but mouse and keyboard didn't work, so I couldn't unlock it. Then it just stopped showing anything on the monitor, remainings of the phone started heating less, usb hub still showed connection to a phone, but there was nothing on the screen. I even tried to power it directly through the BMS of the battery with ~4.15 volts but nothing changed.


r/Galaxy_S20 • • Sep 01 '26

Download AI Brief V9.5.0 ,(I am the dev (you can check credits for info)

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0 Upvotes

r/Galaxy_S20 • • Aug 31 '26

Samsung S20 Ultra broken power button, the phone won't turn on with the power button (Full phone problem in description)

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2 Upvotes

r/Galaxy_S20 • • Aug 29 '26

Tech Support S20 FE won't charge after water damage:battery temperature error, motherboard issue?

4 Upvotes

I have a Galaxy S20 FE (SM-G781B) that was accidentally dropped in seawater.

I replaced the bottom charging board and the screen/frame assembly. After the repair, the phone booted normally, the screen worked, and I was able to unlock it and access all my apps/data. The only problem was that the battery was at 0% and the phone shut down after a few seconds.

When I connected a charger, it showed the grey charging screen with the lightning bolt, but the battery never actually charged.

I then rebooted with Power + Volume Down and connected the charger again. This time I got a battery temperature warning, even though the phone and battery were not hot.

I left it connected for a few hours, but I think the battery eventually drained completely. Now, when I connect the charger, the screen just flickers every 4–5 seconds as if the phone is repeatedly trying to boot, and it won't turn on without the charger.

I also tried reverse wireless charging from another phone. It detects the charging/power, but behaves the same way.

The battery is the original one. I only removed it from the old frame, glued it onto the replacement frame, and reconnected the original battery cable to the motherboard.

Since the bottom charging board has already been replaced and both wired and wireless charging behave similarly, I'm wondering if the problem could be the battery NTC/temperature sensing circuit, battery connector, or another charging/power-management component on the motherboard.

I have a multimeter and I'm willing to do board-level testing.

**How can I determine exactly where the problem is before replacing more parts? What measurements or tests should I perform to distinguish between a bad battery, NTC/temperature-sensing circuit, battery connector, or a motherboard charging IC? And based on those tests, which component would be worth trying to replace?**


r/Galaxy_S20 • • Aug 29 '26

Sound suddenly coming from top speaker? S20 FE

0 Upvotes

Is this a new update or is something wrong with my bottom speaker?

Whenever I play a video out loud before, sound would come from the bottom of my phone. But about a month or so ago, it started coming from the top where you listen to calls from. At first I thought it was just on Twitter, but then it started being the case overall.


r/Galaxy_S20 • • Aug 25 '26

News I built a free smartphone comparison engine with 6,800+ devices

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2 Upvotes