1. Are you ready for the Galaxy S20? Here is everything we know so far!

N1 Safe?

Discussion in 'Android Devices' started by omeyga, Jan 7, 2010.

  1. omeyga

    omeyga Well-Known Member
    Thread Starter

    I know it's got the SAR rating as within acceptable limits and whatnot. But this is the first phone that I can actually feel the heat radiating off where the antenna is. Especially after a bootup where it's looking for the network. Gives me an uneasy feeling.

  2. kyler13

    kyler13 Android Expert

    Where's the antenna? I know many phones have the antenna down by the mouth piece which seemingly is safer.
  3. MartinS

    MartinS Android Expert

    I believe it's down the side. Can't remember where I saw this but whichever site it was has taken the phone apart. Maybe someone can confirm?

    Can you really feel the radiation..? Or is it working temperature heat? I'd be surprised if you could. Maybe it leaves a metallic taste in your mouth...
  4. raremage

    raremage Well-Known Member

    Do you hear radio transmissions coming out of your fillings...?
  5. omeyga

    omeyga Well-Known Member
    Thread Starter

    According to the documentation it's on the bottom of the phone on the backside. Has a picture telling you not to place your fingers over that area and some blurb about exposure. Really scary that you can feel warmth radiating off that area when there's antenna activity.
  6. kabbie_mcfeely

    kabbie_mcfeely Android Enthusiast

    You may be just feeling the heat from the battery. A lot of "smartphones" give off heat when thay are used a lot.
  7. omeyga

    omeyga Well-Known Member
    Thread Starter

    Nope...battery is in the middle of the phone. This is coming from the lower section and it's pretty focused right where the antenna is.
  8. Karganeth

    Karganeth Newbie

    Sorry to break it to you, but that heat feeling is entirely your imagination.
  9. rob61280

    rob61280 Lurker

  10. omeyga

    omeyga Well-Known Member
    Thread Starter

    There must be others with the same imagination then. I've got 3 people that confirmed it.
  11. ChrisFix

    ChrisFix Newbie

    I saw those numbers before I bought mine as well, and thought they were pretty good...but the owners manual has them published as much higher (see page 26):

    0.867 w/kg Head @ 1g
    1.39 w/kg Body @ 1g

    0.823 w/kg Head @ 10g
    1.53 w/kg Body @ 10g

    1.6 w/kg is the USA legal limit...so unfortunately this thing runs pretty high on the SAR scale.
  12. kabbie_mcfeely

    kabbie_mcfeely Android Enthusiast

    Are you gettiing the "heat" when plugged in and charging ?

    Are you getting the "heat" while on voice call ?

    Are you gettiing the "heat" while using phone for long period at a time ?

    Are you gettiing the "heat" when the phone is sleeping while sitting on the table ?

    Are you gettiing the "heat" in any other way besides at start up ???????
  13. Karganeth

    Karganeth Newbie


    Let me guess, you'd have written a longer post but the Wifi is giving you headaches?
  14. omeyga

    omeyga Well-Known Member
    Thread Starter

    Noticed it the most during startup. But now that i've played with it a bit more it very well could be battery heat radiating downward. The reason I say this is that it's warming in that exact spot now that i'm charging it again. It would make since that booting puts an instant strain on a battery and would cause a rapid heat buildup.
  15. omeyga

    omeyga Well-Known Member
    Thread Starter

    I'm sure you're right about everything in life.
  16. ChrisFix

    ChrisFix Newbie

    My BlackJack II gets very warm, quite quickly as well when it is in use, but it is from the battery, which I think is the same as with the N1...
  17. dsjr2006

    dsjr2006 Android Enthusiast

    There are more sources of heat in a phone than just the battery.... That little thing called a Snapdragon maybe?
  18. omeyga

    omeyga Well-Known Member
    Thread Starter

    Very well could be the processor heating up. Anybody know where in the phone the processor is?
  19. omeyga

    omeyga Well-Known Member
    Thread Starter

    According to this teardown of the phone: Nexus One Teardown - Page 2 - iFixit

    Looks like this is exactly the area where lots of instant heatup items are:

    GSM Power Amplifier
    Power Management Chip

    All sorts of stuff that would heat up and it's all packed down there. So problem solved and I can now happily use my N1 without fear of baking. :)
  20. afine1

    afine1 Well-Known Member

    you are just going to have to wrap your whole head in aluminum foil.
  21. omeyga

    omeyga Well-Known Member
    Thread Starter

    always do.
  22. MartinS

    MartinS Android Expert

    Download the HTC battery widget (or similar) - it gives you the battery temperature.
  23. rob61280

    rob61280 Lurker

    Thanks for the info ChrisFix, thats a fairly large jump from the earlier figures.

  24. michaelbelt

    michaelbelt Lurker

    What is the difference in measurement? I usually only see one pair of head/body measurements on most sites.

Nexus One Forum

The Nexus One release date was January 2010. Features and Specs include a 1400mAh battery, 3.7" inch screen, 5MP camera, 512GB RAM, and Snapdragon S1 processor.

January 2010
Release Date

Share This Page