02-16-2021 07:51 PM
27 12
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  1. pj737's Avatar
    My phone gets exceptionally hot. I had the same problem with my Note 9 a couple years ago. Graduated to the Note 10+ which stayed so much cooler even under heavy use. The 20 Ultra is almost as hot as my old Note 9. I live in a hot climate so having a hot phone is very uncomfortable to hold.

    Anyone else experiencing this? Perhaps there are settings I can change to cool it down. Battery life is also less than my Note 10+. I'd say about 20% less screen time.
    08-23-2020 03:58 AM
  2. evohicks's Avatar
    Exynos or Snapdragon handset?
    If its Exynos then there are going to be heat issues under load which have been well documented recently. It may even be a rogue app, sometimes it is best to do the initial phone setup from scratch and not using tools like Samsung Smart Switch because any current issues you may be experiencing may be brought on to your new phone.
    08-23-2020 04:04 AM
  3. j_hansen's Avatar
    If you only just started using it less than a week ago, it's probably about right it would be about 20% less than the Note 10 plus, it will get better in a couple of days.
    What case are you using, can heat escape from it properly?
    08-23-2020 04:06 AM
  4. pj737's Avatar
    Thanks for the replies. Snapdragon unit. I did a clean switch and I'm using the same type of Spigen case I used on my Note 10+. I don't get the "system overload" message like I used to on occasion when apps went rogue. It just seems to run much hotter than my 10+. I'll give it a few more days of use to see if it improves.
    08-23-2020 05:16 AM
  5. j_hansen's Avatar
    The first day with setup mine got warm but not HOT
    08-23-2020 05:25 AM
  6. donm527's Avatar
    Seems like Samsung has nickel and dime'd us in the cooling department using graphite thermal pad/paste instead of the copper heat sink used in past? The article says not all phones so wonder what phones have the copper?

    https://www.theverge.com/circuitbrea...raphite-copper
    08-25-2020 08:50 AM
  7. fanofandroid69's Avatar
    The first day with setup mine got warm but not HOT
    When I did wireless charger off another Sammy 9hone the N20U did get warm..,...but not hot tho.
    08-26-2020 06:35 PM
  8. fanofandroid69's Avatar
    The first day with setup mine got warm but not HOT
    When I did wireless charging off another Sammy phone the N20U did get warm..,...but not hot tho.
    08-26-2020 06:36 PM
  9. Ruben Ocasio's Avatar
    All Phones get a bit Warm when charging doesn't matter what type of phone it is, That is normal, But noway has my Note20 Ultra or any Samsung phone i have had get hot, Don't get why people get confused with hot and warm big difference.

    Now if it gets really hot then most likely you have a defected phone.
    j_hansen and TMavC5 like this.
    08-26-2020 06:44 PM
  10. Gayle Lynn's Avatar
    I would run a app just to monitor actual temp and battery so that there’s some quantitative number to warm can hot.

    Some wireless chargers are better than others and can change, or cable + adapter combo.

    Are you charging more often seeing how battery % drops more?
    08-26-2020 07:46 PM
  11. CKwik240's Avatar
    All Phones get a bit Warm when charging doesn't matter what type of phone it is, That is normal, But noway has my Note20 Ultra or any Samsung phone i have had get hot, Don't get why people get confused with hot and warm big difference.

    Now if it gets really hot then most likely you have a defected phone.
    It sounds like there may be two methods that they have implemented for heat rejection. A heat pipe would act as both a sink and spread the heat energy. This would help to keep the phone surface temperature down as it would spread the energy throughout the sink and dissipation would occur over a wider area as well so surface temperature would be lower. Whereas a graphite pad will really only bring heat energy up to the surface. I don't think it will have much sink capacity so the temperature is going to depend quite a bit on the rejection rate on the surface of the phone where the pad is and how much heat energy the cpu is putting out. So basically, it is possible any versions with the graphite pad may feel hotter than if a heat tube was used. Doesn't necessarily mean the cpu is running hotter or out of specifications though.

    I will add that my phone has been running quite cool.
    08-26-2020 07:59 PM
  12. o4liberty's Avatar
    I always elimate anything not needed running in the background and I always reboot my device twice a week to keep it running great and never a hot battery. Last hot battery I couldn't fix was the S7 edge.
    08-26-2020 08:18 PM
  13. felloffthetruck's Avatar
    Mine just got hot out of the blue this afternoon. I was just checking some email and that sucker got pretty hot for no reason at all.

    Hope it's not another Note 7 dumpster fire.
    08-26-2020 09:29 PM
  14. Mike Dee's Avatar
    Mine just got hot out of the blue this afternoon. I was just checking some email and that sucker got pretty hot for no reason at all.

    Hope it's not another Note 7 dumpster fire.
    Did you check to see what was running in the background?
    08-26-2020 09:35 PM
  15. felloffthetruck's Avatar
    Did you check to see what was running in the background?
    I didn't really but I'm a fanatic for closing apps all the time.
    08-26-2020 10:03 PM
  16. DSMpowerhousegroup's Avatar
    Mine just got hot out of the blue this afternoon. I was just checking some email and that sucker got pretty hot for no reason at all.

    Hope it's not another Note 7 dumpster fire.
    I knew it wouldn't be long until someone brought this up. Electronics make heat. No issues with mine. Got a little warm during the smart switch process. Normal to me.
    08-30-2020 12:58 AM
  17. mustang7757's Avatar
    I haven't run into this , maybe monitor in safe mode to rule out any 3rd party apps
    08-30-2020 01:42 AM
  18. phone-a-holic's Avatar
    Mine also got hot but it was what looks to he searching for service. I got the no network connection message. It was on the edge of my wifi area.
    08-30-2020 07:51 AM
  19. j_hansen's Avatar
    It's only considered HOT if you can make tea on it, anything else is just warm :-)
    Jerry Schuller likes this.
    08-30-2020 07:53 AM
  20. larry1014's Avatar
    I knew it wouldn't be long until someone brought this up. Electronics make heat. No issues with mine. Got a little warm during the smart switch process. Normal to me.
    Last time I bought 2 phones at the same time was the Note 7, hope I didn't bring bad luck. Our phones haven't felt that warm. We aren't gamers or power users though.
    08-30-2020 08:17 AM
  21. Javier P's Avatar
    JerryRig teardown, with a surprise.

    08-30-2020 12:09 PM
  22. cardboard60's Avatar
    Use a slow charger.
    benjamminh likes this.
    08-30-2020 02:54 PM
  23. pj737's Avatar
    I'm coming from 8 generations of Samsung phones. And my Note 10 ran much much cooler than my Note 20. Also, battery life is about 20-30% lower on my 20 vs 10. It's not hot like burn your hand hot or phone ready to catch fire hot but it can be uncomfortable to hold when use is heavy. I'm in a very hot climate so the last thing you want is a hot phone.
    08-30-2020 05:25 PM
  24. mustang7757's Avatar
    I'm coming from 8 generations of Samsung phones. And my Note 10 ran much much cooler than my Note 20. Also, battery life is about 20-30% lower on my 20 vs 10. It's not hot like burn your hand hot or phone ready to catch fire hot but it can be uncomfortable to hold when use is heavy. I'm in a very hot climate so the last thing you want is a hot phone.
    How hot is the climate your in ? Do you leave it in the sun or out in it a lot?
    08-30-2020 05:54 PM
  25. Gayle Lynn's Avatar
    Realize this thread is old from when N20 had just come out. I bought mine in Sept.

    Here it is Feb and after the recent update, my N20 (base model) keep getting notifications from GSam Pro it is hitting 39-40°C And this after doing everything I could except to use Dev mode to kill processes and limit to 4.

    My S21 I've had for 2 weeks runs much cooler, 24-30°C no heat spikes. Both are setup 100% identical. In other words, 10°C cooler. The Note starts at 30-31:then jumps to 38-41° during use.

    Maybe Samsung should automatically force clearing cache partition on it own and add an extra reboot.

    Anyway, I decided I'd trade it in and ordered the S21U instead. See how that goes. Was tempted to buy iphone 12 Max but couldn't convince myself
    02-13-2021 05:01 PM
27 12

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