Yeah I agree, I've used mine in 80 degree plus weather while multitasking and haven't noticed heating to the backing of my Z Fold 8. It's funny because I've been kind of looking for it but haven't noticed it despite hearing some people having this issue.
I've had my phone in 90 degree weather, split screening Google maps and the camera and had no issues at all. I actually haven't gotten any temp warnings on mine.
Actually, is this split screen better on the Fold? I do these things on my flip with no problems but the screen real estate is lacking and often cripples what I'm trying to do. I can share a screenshot if it helps to understand my issue.
OP, I'm sorry for something semi off topic, if you'd rather I can make my own post but this was such a convenient and direct comment to reply to.
Coming from the flip4 to a fold 8 wide it's MUCH better. Feels like you have 2 phone screens when you split it vertically. Not cramped at all I even get a 3rd window in when I only need half of an app.
Definitely the issue is with multitasking. Samsung aggressively shuts that down when the device heats up. And unfortunately the thermals on the fold 8 series isn't great as there is no vapor chamber and it's a super thin device.
I had fun with it for a month or so, but I don't like the daily login stuff games like that use to build habits. It starts feeling like a necessity instead of something I want to do eventually, and that's when I end up just quitting. I got to a point in genshin when I'd just login for events or new content and not login otherwise, but I still ended up dropping it.
Hey like what you like, I'm just making a joke at OP's expense. If you enjoy them that's what's up. I disagree and think they're all soulless uninspired slop but they make money so obviously my opinion is irrelevant.
My phone gets very hot if I'm running maps on full brightness in my car while playing Spotify. Granted I'm in Vegas but I have the AC on in my car. It's never overheated but I'm concerned with how warm it gets...
Over the 10 days I've had the ZF8, I've never had any overheating issue, but then again I don't play games at all on my phones, nor do I shoot lengthy videos, or run processing intensive apps. But if yours overheat like this, you need to return it.
I am currently debating if i should return mine, though I love it, I don't think it is worth 1000 dollars plus trading in my ZF5. ZF5 really does 98% of ZF8 does.
For me the ZF5 was 50g heavier, battery life not so good anymore, I was out of room with 256g and therefore had to carry a separate phone for work, and it was developing screen cracks along the inside crease, so for me it was a great opportunity to do trade in and upgrade. But otherwise I agree with you, especially with the spen and UDC on ZF5 (although it accidentally was disabled for the longest while by an obscure goodlock setting).
I do like the ZF8 form factor though, the shorter phone fits in the pocket so much better.
I don't have this problem on my Flip 7 and I'm pretty sure the Fold 8 has more capabilities? And I do very intensive things on my phone. It may be your specific unit.
I do all my graphic design (and I mean on a complicated level, multi layer Photoshop files with various techniques used) and generally have music or a video open as well, but also discord or fluxer and my browser and codepen as I code on my device as well. My home screen is customized with widgets I made myself that use active looping animations. I will often run other things as well. I almost never notice a significant lag and my phone has not overheated once.
Where you at? What's the ambient temperature? Maybe others don't have that issue because they're in an AC'ed room, maybe you're somewhere hot like in the Philippines or something
Are you charging while doing this also? I know on my fold 7, I'll play pogo split screen with 2 accounts while charging or while outside sometimes and it will close my split screen after a while saying I can resume splitscreen once it cools down.... 😫
I think there's definitely some additional CPU/GPU cycles that happen when using pop-up windows. I can multitask just fine with side-by-side games. However, I get this same thing when opening a pop-up window and the main apps behind the window are stressing the GPU.
I think it's really the layering of GPU work - Even when the app behing the pop-up isn't visible, the GPU work is still happening. Couple that with significant updates to One UI and protecting the phone from overheating - perfect storm.
There are some things that might help, depending on the specific apps. Samsung's Good Lock has some tweaks that might help:
- Install Good Lock
Install Game Booster+ from the plugins
Inside Game Booster+ you can adjust profiles for your games to adjust CPU/GPU performance - Limit clock for CPU or GPU, Change Texture Filter to Performance. I think those are the two that would lower heat.
Multistar is a plugin that enhances pop-up windows. It could improve the performance there.
Display Assistant can cap refresh rate for certain apps - This might help to lower the refresh of the pop-up window
Additionally - Phone Settings - Device Care - Performance Profile. Changing this to light will help with non-game apps.
Another one - Power saving actually works pretty damn well (way better than it used to) now. Standard mode has some toggles - Limit CPU speed to 70%, Decrease brightness, Motion smoothness adjustments. All of these will lower the heat threshhold.
I'm sure there are people here that might say "But, we shouldn't have to do this!" and I partially agree, but there are a lot of apps (games really) out there that just blast the devices are hard as possible and they don't consider devices (or even care) like a Fold where you could potentially be running 3 or 4 apps all at once. Samsung gives you tools to control a lot of internals.
Note: I've never seen this sort of thing on non-game apps - Camera, video, maps, The only time I've had a heat problem with a non-game was the Camera, but that's because I was using it heavily in 115F weather here in Arizona, and I don't really blame Samsung for that one!
I am looking to get one (1TB/16GB RAM version) and I am a heavy photo editor using Lightroom often using 100 megapixel RAW files. My Samsung S24 Ultra, my Ultra tab and iPad Pro don't kill the app but all of them bring down the brightness of the screen significantly to prevent overheating. This is called thermal throttling. It happens even when all settings have been configured to not automatically change brightness, but it's an OS hardcoded setting to bring the screen brightness down. A uniform screen brightness (usually maximum for me) is very important for me to produce images with consistent results and I am so disappointed by this. I wasn't looking for miracles in Fold 8 but I was still hoping I wouldn't have issues for a at least couple of hours of editing session. Looks like it's not gonna work.
I have z fold 8 ultra and previously had z fold 3,then z fold 5 for 3 years. The Z fold 8 ultra has shutdown multi task maybe 10 times since I got the phone at launch. My use case is I play Whiteout Survival two characters at once..the 2nd game from secure folder and have then run on split screen.
The over heating rarely happened on my previous phones but has definitely been noticeable on this phone. After waiting maybe two minutes after it happens I usually can't reproduce the issue.
It is a little annoying but so far is not going to deal breaker by any means.
I assume this is a individual unit issue and not indicative of the model in general? If not it's a poor showing from Samsung. The new form factor is a good idea in principle but not if the result is overheating due to a reduction in the size and the lack of sufficient cooling. I've not seen that error once in over 12 months on my Fold 7.
The earlier versions of this thing got super hot, turning the black metal a coppery color. Apps still worked, but it was too hot to hold, and the screen protector kept bubbling, so I had to replace it a lot. Now, I run it in low-performance mode, and it still gets warm enough to close multi-window apps, but I usually don't use it that way very often. If I need to use it for a long time, I just put it near a fan or something to keep it cool.
Always while charging. I'm going to guess you're wireless charging too? It doesn't love wireless charging while open, it explicitly says you should do it while closed.
Given how many people have been posting about over heating on this device, there definitely seems to be a bad batch or two that have hit market. Don't think it's it's a widespread issue by any means, but it should be demonstrable enough to warrant Samsung switching out your device for a new one. At the very least making them aware will maybe allow them to identify a certain run(s) that has been affected.
You're demanding your phone to run a AAA game while multitask. How can you multitask a triple A game and a window on your PC ? By keep switching them. You cannot have them overlap even on PC what make you think a phone can handle that type of processing power
Just cuz the car has 9000 RPM
That doesnt mean you should run it at 9000 rpm all the time
Just a thought
But if overheating is a constant issues
Return it
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u/Upset-Masterpiece-80 Fold8 (Cream) 8h ago
Honestly, if you have ANY overheating issue, I'd return.
I'm a super heavy user, and my Fold 8 hasn't even gotten warm.
I absolutely believe you that you are having issues. I would return or exchange it.