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Nexus 7 Screen separation Fix

Here it is! Just got my Nexus 7 but a really bad surprise waited me. As soon as I opened the box, I experienced the "screen separation" issue that a lot of people had. I tried to look on the web for a real permanent fix as Google's supply are not able to bet me an exchange/RMA that would not require to open the back of the device. I had tried to get the screws tighten without success, I also tried to put spacers in between the screws without success also.. :crying:
I read a lot about fixing this issue; one was explaining how to make the CPU/GPU running and generating heat to get the glue to hold the screen and case together. So I was sitting there watching my battery temp going up to 32-35C/90-95F as my meal was in the oven at 190C/375F. Then I got this great idea. I stopped the stress test, put the tablet in power off state and placed it face down on TOP of the hot spot of the oven; in between the two front elements. I put weigh on top of it and waited about 30-40 min. After that period, I started "Stability Test" available on the Play Store to get the battery temp that was around 47C/115F. I stopped the oven and let it sit for the night face down with weigh on top of it to cool it off. Next morning, surprise! The screen was finally glued. I had no screen seperation since then. It's now being my 5th day without any problem.
Conclusion : FIXED !! :laugh:
Let me know if that worked for you as well !

A heat gun would probably be easier and safer, glad it worked though.
Sent from my Nexus 7 using XDA Premium HD app

Thanks! Worked on mine too!
Sent from my Nexus 7 using xda app-developers app

Interesting idea, hadn't heard that one before. Of course, different stoves will have different hot spots from the oven, so YMMV. How much weight did you put on top of it? Also, do you happen to have a way of measuring how hot the spot gets?
I'd be interested to see if this is a truly permanent solution or if the adhesive starts to break down again after a few weeks or months.

bushpilotwannabe said:
Interesting idea, hadn't heard that one before. Of course, different stoves will have different hot spots from the oven, so YMMV. How much weight did you put on top of it? Also, do you happen to have a way of measuring how hot the spot gets?
I'd be interested to see if this is a truly permanent solution or if the adhesive starts to break down again after a few weeks or months.
Click to expand...
Click to collapse
I placed my hand over and touched it.. If the "hot spot" was couple of degres higher, I wouldn't be able to let my hand sit there.. I was at the limit.. For the weight, I used casino's pot full of change.. 2x 8 pounds..

caublet said:
I placed my hand over and touched it.. If the "hot spot" was couple of degres higher, I wouldn't be able to let my hand sit there.. I was at the limit.. For the weight, I used casino's pot full of change.. 2x 8 pounds..
Click to expand...
Click to collapse
Good to know. Different people seem to have different thresholds for heat (for instance, I remember as a kid I couldn't keep my hands under the same water my mom used to wash dishes), but the spot on my stove doesn't seem to run as hot as you described, so I'd be willing to try it if I run into this issue on my replacement.
All in all, though, I like this idea a lot. There's always a risk, but I'm sure the devices are stress tested with the CPU running at temps hotter than you could reproduce using this method (short of actually putting it inside the oven). As long as you can hold your hand on the spot without it getting too unbearable, I would think it's pretty safe to try.

mario24601 said:
Thanks! Worked on mine too!
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
lmao.

Is there any way that we could just use our better glue to stick the screen tight regardless of the heat when playing games?
Sent from my Nexus 7 using xda premium

SoHaunted said:
lmao.
Click to expand...
Click to collapse
Sent from my Nexus 7 using xda app-developers app

abitzsong said:
Is there any way that we could just use our better glue to stick the screen tight regardless of the heat when playing games?
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
I'm interested in this too. What about a very tiny amount of super glue on top of the old adhesive?

regarding heat-guns .... do you think a hairdryer would get hot enough/ too hot etc? I'm keen to try this but dont want to mess it up.
I'm on my 2nd N7 and have screen lift again

eager27 said:
regarding heat-guns .... do you think a hairdryer would get hot enough/ too hot etc? I'm keen to try this but dont want to mess it up.
I'm on my 2nd N7 and have screen lift again
Click to expand...
Click to collapse
Have you tried the washer trick? That defiantly did the job for me. :good:

I dix tried but had no real results
Sent from my Nexus 7 using xda app-developers app

I dix tired the washer trick with no luck i guess..
Sent from my Nexus 7 using xda app-developers app

This is a confirmed solution

Its not the separation that annoys me... its the creaking sound...
Sent from my Nexus 7 using Tapatalk 2

shocking discovery- missing screws in nexus 7
Long story short:
1st device from best buy : scar like dead pixels, exchanged for second
2nd device from best buy: loose screen/ seperation
Got 3rd device from staples hoping it is better, noticed screen noticeably yellower, minimal seperation problem.
At my last resort, opened up the 2nd and 3rd device, found 3 screws missing from the right side when faced down(or left when screen is up). While the 3rd device is missing one,
. I am so shocked this is happening....no wonder my screen is so loose.
I m a first timer with android device. Own an iphone . Gotta say jelly bean and even the nexus 7 itself is spectacular. But what is with Asus? Have google picked the wrong partner. Or is it is pure poor quality control. Unbelievable.
Follow MW on Twitter for pics to come soon @domlee2010

caublet said:
I stopped the stress test, put the tablet in power off state and placed it face down on TOP of the hot spot of the oven; in between the two front elements.
Click to expand...
Click to collapse
Okay, so just to make sure what you people do:
1. Heat up the oven
2. Find the hotspot
3. Switch oven off, wait until hot to touch (that'd be a bit over 60C)
4. Switch unit off
5. Put the unit on the hot spot with about 16 pounds (8 kilos) of pressure on top (really?)
6. Wait until it has cooled down naturally
Am I missing anything? How has the fix held for you so far after a month or more?
Thanks, :cyclops:

Did not work for me.
I heated the device to 80C with a hairdryer, then pressed it with clamps (force equal to about 9kg) for about 7 hours.
Separation came back about 1 hour after I released the clamps without turning the device on.
Too bad, as I have no way to exchange it.
I guess I'll just use the case.

5 minute epoxy (or any glue one's comfortable with) is the way to go. The problem is obvious once the bevel is removed - the glue on the left side on my device had cured without holding the glass. Hard to believe heating and pressing would work at all.
Sent from my DynaTAC 8000X using magic powers

overheating issue?

My phone gets pretty hot when gaming. Does this happen to anyone else?

Your phone has a quad core processor and brilliant screen inside of an all metal body. Of course its going to get hot. Other phones(my old gs3 for example ) get just as hot. You just don't notice it due to the plastic body.
Sent from my HTCONE using xda app-developers app

acme64 said:
My phone gets pretty hot when gaming. Does this happen to anyone else?
Click to expand...
Click to collapse
Metal is a better conductor of heat than most other phones (various types of glass and plastics). It will feel warmer, even at the same temperature.
The plus side of it feeling warmer is that, ironically, the internals should be cooler, all things equal.

Well does your pc get hot while gaming ? Does the Xbox or ps3 yup so safe to assume heavy gpu tasked games will make it hot . Try to not be charging at the same time . Remember no removal of the battery so when it gets to hot we have little recourse to cool the AC works though lol
HTC-DNA,HTC-ONE,s3x2,s4-i9500

I've never had a metal phone before. Didn't even occur to me the frame would be the heatsink as well. I can breathe easier now thanks
Sent from my HTCONE using Tapatalk 2

Overheating

Hi,
Ive had a few problems with my One but I've stuck with it, more commonly the heat of the phone when playing games. I play all kinds when on the way to work on the tube (its boring) I play candy crush at the moment ( I loathe and love that game) the thing is what I've noticed is that the phone heats up to a point where it feels slightly uncomfortable. Does anyone else have this problem? I know that the likes of real racing 3 makes the phone hot but does anyone else have this same problem with the likes of candy crush (a relatively simple game)
As a test, play the game for 10 - 15 minutes and see how the phone feels in your hand. For me its s bit hot, this is my third and probably not my last HTC one. For me all three have had the same heat problem. Every day tasks are fine, just gaming knocks the heat up quite a bit.
Sent from my HTC One using xda premium

dladz said:
Hi,
Ive had a few problems with my One but I've stuck with it, more commonly the heat of the phone when playing games. I play all kinds when on the way to work on the tube (its boring) I play candy crush at the moment ( I loathe and love that game) the thing is what I've noticed is that the phone heats up to a point where it feels slightly uncomfortable. Does anyone else have this problem? I know that the likes of real racing 3 makes the phone hot but does anyone else have this same problem with the likes of candy crush (a relatively simple game)
As a test, play the game for 10 - 15 minutes and see how the phone feels in your hand. For me its s bit hot, this is my third and probably not my last HTC one. For me all three have had the same heat problem. Every day tasks are fine, just gaming knocks the heat up quite a bit.
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
This sounds exactly like what mine does, except it happens with any activity if the activity is long enough (from gaming to simple web browsing). After about 15 to 30 minutes my battery will be between 37-41C, not making the phone burning to the touch but hot enough to make my hands sweat and holding the device uncomfortable. I was thinking because metal is such a great conductor that this is just a result of the build materials but I'm not sure

It could indeed be an issue of aluminum being an excellent conductor of heat.
Sent from my HTC One using xda premium

Same here, my EVO burns up when I play games for a longer time. The difference is that the EVO 3d has plastic on the back, not aluminium. I think it's HTC's problem...
Sent from my HTC EVO 3D X515m using xda app-developers app

I know that the HTC's of old have had heat issues, primarily the One X had some problems but there have been many more.
I just noticed it when i first got the phone, its really quite a thin phone so i suppose some heat in there is expected, but when playing the likes of candy crush, doesn't appear to be a demanding game compared to the likes of rr3 or a psx emulator. I'm just worried about the long term implications on the internals, is it going to shorten the life of the components? I know my pc is as cool as a cucumber and i'm always on top of cooling with that but theres not a huge amount i can actually do with the phone.
Maybe a cooling pad on a case? Do they even make those?
Could just be an early batch and like i said, mine for the most part is cool, it's just gaming.

couped said:
It could indeed be an issue of aluminum being an excellent conductor of heat.
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
Yea i'd thought that, would be good if they'd popped a heat vent in there but it'd ruin the aesthetics of the phone i suppose, it is after all a very pretty phone.

CrappyAlloy said:
This sounds exactly like what mine does, except it happens with any activity if the activity is long enough (from gaming to simple web browsing). After about 15 to 30 minutes my battery will be between 37-41C, not making the phone burning to the touch but hot enough to make my hands sweat and holding the device uncomfortable. I was thinking because metal is such a great conductor that this is just a result of the build materials but I'm not sure
Click to expand...
Click to collapse
Well i'm glad it's not just me anyway I'm going to speak with the people who buy it in my place of work and see if theirs has any of the same issues because if they don't then i'll be swapping it out.
Oh and mines the silver one, not sure if it makes any difference or not.

Heats up like a mofo

I'm betting you all have experienced this, but I find it ridiculous. If I play a game (not a specifically cpu-intensive game) for say 20 minutes to half an hour, then my phone is so hot that I find it uncomfortable to hold. It does not have specifically warm insides, which must then sound like the metal is doing what it should and lead the heat elsewhere but it's uncomfortable.
If I play for approx. half an hour, it's already way past warm. Warm would feel cold in comparison to how hot it can be. Are everyone experiencing this or is it possible I have gotten a lemon?

It's normal. It has an aluminum back. You're gonna feel some heat.
Sent from my HTC One using xda app-developers app

SkizzMcNizz said:
It's normal. It has an aluminum back. You're gonna feel some heat.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
Some? We're way past that with my phone. I agree it should get warm, but not to such a degree that it gets uncomfortable to hold.

Mine used to get hot with the older builds. Haven't experienced any excessive heat on 4.2.2
Sent from my HTC One using XDA Premium HD app

Same here!

Aluminum transfers heat differently than plastic. It's gonna get hotter than plastic will. It's just how the metal is.
Sent from my HTC One using xda premium

Theshawty said:
I'm betting you all have experienced this, but I find it ridiculous. If I play a game (not a specifically cpu-intensive game) for say 20 minutes to half an hour, then my phone is so hot that I find it uncomfortable to hold. It does not have specifically warm insides, which must then sound like the metal is doing what it should and lead the heat elsewhere but it's uncomfortable.
If I play for approx. half an hour, it's already way past warm. Warm would feel cold in comparison to how hot it can be. Are everyone experiencing this or is it possible I have gotten a lemon?
Click to expand...
Click to collapse
You need to tell us what temps your phone is hitting. We can't really help you out without that. Maybe your phone is getting hotter than a normal One, or maybe your hands are more sensitive to heat than the average user. Can't know without temps.
For example, my phone maxes out at 42/43 degrees battery temp. It's definitely warm, but not uncomfortalble to hold. Other users have said their phone temp is around this as well when playing intensive games.
If your phone gets much hotter than this, I would return it. If it doesn't, and your hands are more sensitive than ours, I would buy a case/different case and try to live with it.
Sent from my HTC One using xda app-developers app

42 degrees as in Celsius? Because I don't know Fahrenheit.
Sent from my HTC One using Tapatalk 4 Beta

Theshawty said:
42 degrees as in Celsius? Because I don't know Fahrenheit.
Sent from my HTC One using Tapatalk 4 Beta
Click to expand...
Click to collapse
Yeah.... Celsius

Theshawty said:
42 degrees as in Celsius? Because I don't know Fahrenheit.
Sent from my HTC One using Tapatalk 4 Beta
Click to expand...
Click to collapse
The phone definitely transfers heat very well, so it seems much hotter than other phones. I don't like it either. I was in Shanghai on the weekend and this phone was making my hands sweat. I think the next big improvements we'll see with phones will be temperature and battery life. It must... These phones are becoming heaters.
Since your phone's temperature is normal, I can only suggest three things. Get a different case, root and try the elemental kernel, or undervolt your processor. Not much beyond that.
Sent from my HTC One using xda app-developers app

ataft said:
The phone definitely transfers heat very well, so it seems much hotter than other phones. I don't like it either. I was in Shanghai on the weekend and this phone was making my hands sweat. I think the next big improvements we'll see with phones will be temperature and battery life. It must... These phones are becoming heaters.
Since your phone's temperature is normal, I can only suggest three things. Get a different case, root and try the elemental kernel, or undervolt your processor. Not much beyond that.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
Ok, thanks, seems it's all normal then! :good:
Also, your English is very good.

haha, thanks, but I'm not Chinese. Just a Canadian expat trying to learn Chinese

ataft said:
haha, thanks, but I'm not Chinese. Just a Canadian expat trying to learn Chinese
Click to expand...
Click to collapse
Hah, ok. Sounds about as hard as trying to scale Mount Everest on a bike, though.

Slightly harder than trying to keep this phone cool.

ataft said:
Slightly harder than trying to keep this phone cool.
Click to expand...
Click to collapse
Maybe it's really a portable radiator with smartphone capabilities?
(HTC = Hard To Cool)?

I use a case when I am playing a game for long.. you cannot feel the heat at all.

Theshawty said:
I'm betting you all have experienced this, but I find it ridiculous. If I play a game (not a specifically cpu-intensive game) for say 20 minutes to half an hour, then my phone is so hot that I find it uncomfortable to hold. It does not have specifically warm insides, which must then sound like the metal is doing what it should and lead the heat elsewhere but it's uncomfortable.
If I play for approx. half an hour, it's already way past warm. Warm would feel cold in comparison to how hot it can be. Are everyone experiencing this or is it possible I have gotten a lemon?
Click to expand...
Click to collapse
I've got two Galaxy S4's and a HTC One they all get very hot after 20 mins seems the S600 has pour thermal profile when it hits the top of it's clock speed. I would say the HTC is just a little bit hotter than the S4 most likely due to the Aluminium. Try a Flexishield case works for me to make it a bit more comfortable.

androidizen said:
I've got two Galaxy S4's and a HTC One they all get very hot after 20 mins seems the S600 has pour thermal profile when it hits the top of it's clock speed. I would say the HTC is just a little bit hotter than the S4 most likely due to the Aluminium. Try a Flexishield case works for me to make it a bit more comfortable.
Click to expand...
Click to collapse
You have two S4's and a One? Do you have liquid gold pouring from your faucet as well?

Keep phone cool while charging (wireless/wired)

Hey everyone. I'm new to the Nexus 5 community, got my phone a week ago and so far it feels like ive had it for ever. Great device and so worth my limited money.
Anyways. I have been doing these methods on all my phones and so far i haven't seen anyone else trying this.
1. Speed cool your phone
If you have a heat sink from an old pc laying around (unless its one of those huge gaming computer heat sinks) it can now have a purpose again. If your phone gets hot, simply put the heatsink copper side up and put your phone on it. about 2 minutes later your phone should be as cool as it can get without using a freezer.
2. Keep phone cool while wireless charging.
I got a wireless charger recently, and sometimes the phone doesn't get hot at all, and other times it gets VERY hot (about 115 degrees F). So instead of finding the 'perfect' position for my phone to stay cool, i found that using simple cup stands or what ever they are called, helps.
You know those things at restaurants that you put your cup on? those things. For best effect, use 2 or 3 of these, put them under your phone while your phone is on the wireless charger. I think it helps because the cardboard isn't very dense and absorbs and quickly lets off most of the heat and my phone never got over 101 degrees F yet.
3. The first method can also be used while charging your phone though a wire.
Sometimes i want to watch a movie or something while charging my phone on a wire, i simply put it ontop of the heatsink and watch the movie. Might be a bit uncomfortable, so try to found a way for it to be comfortable.
Hope this helps anyone, im still working on a way to make a home made (thin) heat sink for wireless charging.

heat sink testing
So far ive built the heatsink, its about 6 - 7 mm thick using those cardboard cup stand things mentioned above, coper wire, and silicone, and some superglue. i thought tape (specifically the adhesive) would melt under heat.
So far, i have charged my phone all the way up from 20%, temeprature hit 118 degrees F (note this is wireless charging).
Currently testing the heat sink. Charging it up from 85 %. So far at 92% and max temperature is 97F but has gone down to 96F. The heat sink is pretty warm compared to the phone (the phone is actually quite cool).
If you would like to mess around with the design this is how i built it.
Took one cardboard cup plate and put a copper coil on it. I just took about 10 inches of copper wire (thin kind) and made it into a wide coil (ill post pictures later), and then hammered it to be more or less flat. Put small amounts of superglue to hold it in place. Took the second cardboard plate, and put it on top. Used silicone to seal the edge to hold. Also add some super glue to the top of the coil to glue it to the top cardboard piece.
Simply put the heatsink under the phone while wireless charging.

Pictures of heatsink
Here are the pictures.
Ill post screenshots later of the test.

I do the same thing for wireless charging. Instead of making one, I bought a set of ceramic/porcelain/granite (I don't really know) coasters. I used one coaster for wireless charging, and four more under my laptop for when it is on the counter or table (keeps it cool and above any drinks that may spill).

upndwn4par said:
I do the same thing for wireless charging. Instead of making one, I bought a set of ceramic/porcelain/granite (I don't really know) coasters. I used one coaster for wireless charging, and four more under my laptop for when it is on the counter or table (keeps it cool and above any drinks that may spill).
Click to expand...
Click to collapse
link to the materials? Sounds like good idea.
I have this huge granite/porcelain slab my mom uses to beak bread. i wish it wasn't a 2 foot x 2 foot size, maybe i could have used that instead.
ALSO
so far the temperatures would go up to about 99F and then go back down to around 96...i think what happens is the phone heats up, then the heatsink takes the heat, and cools down while the phone heats up again...cycle

russian392 said:
link to the materials? Sounds like good idea.
I have this huge granite/porcelain slab my mom uses to beak bread. i wish it wasn't a 2 foot x 2 foot size, maybe i could have used that instead.
ALSO
so far the temperatures would go up to about 99F and then go back down to around 96...i think what happens is the phone heats up, then the heatsink takes the heat, and cools down while the phone heats up again...cycle
Click to expand...
Click to collapse
As I mentioned, I am not exactly sure what the material is. My guess is ceramic. I had the idea when I saw them in a store.
You can find them just about anywhere, and decorated any way you like (mine are plain). Link to Amazon
The granite slab you mentioned should work just fine. I never precisely monitored the temperature, but I know its a lot cooler.

upndwn4par said:
As I mentioned, I am not exactly sure what the material is. My guess is ceramic. I had the idea when I saw them in a store.
You can find them just about anywhere, and decorated any way you like (mine are plain). Link to Amazon
The granite slab you mentioned should work just fine. I never precisely monitored the temperature, but I know its a lot cooler.
Click to expand...
Click to collapse
Haha like I said that slab is huge for an oven made to bake on. So if I had something to cut me a slice I would.
I was just sitting at my PC and I saw the little cardboard things and though why not try it. I tried with two and it seemed to work okay-ish so like I used my copper heat sink I thought of putting copper in between. Took me 5 minutes to make.
But I'll definitely give the porcelain a try.
Sent from my Nexus 5 using XDA Premium 4 mobile app

I don't recommend putting anything between the phone and the wireless charger, increased distance means less power into the phone and more wasted into the air. Also I don't think the plastic case of the phone will interface well with a metal heatsink but I admire your tenacity.
Maybe log your temps with and without and compare, though you would have to adjust values for ambient room temps otherwise a warmer day could throw off all your results.

bblzd said:
I don't recommend putting anything between the phone and the wireless charger, increased distance means less power into the phone and more wasted into the air. Also I don't think the plastic case of the phone will interface well with a metal heatsink but I admire your tenacity.
Maybe log your temps with and without and compare, though you would have to adjust values for ambient room temps otherwise a warmer day could throw off all your results.
Click to expand...
Click to collapse
Yeah I noticed it takes a bit longer to charge but wireless charging is never actually fast as cord charging. I get about 1% ever minute with screen off and 1% every 2 minutes with screen on.
Sent from my Nexus 5 using XDA Premium 4 mobile app

Also I think its worth a try, maybe someone can come up with something more effective.
Sent from my Nexus 5 using XDA Premium 4 mobile app

just out of curiosity, completely. whats the point of this? heat is normal, especially while charging, and does not hurt the device. for the fun of it, i reach cpu temp shutdown purposefully all the time(105C), on all my devices, for years. heat has never ever caused any kind of damage to any of my devices. as the safety temps for battery and cpu shutdown are actually below the temps that our devices can handle before it can cause any damage.

simms22 said:
just out of curiosity, completely. whats the point of this? heat is normal, especially while charging, and does not hurt the device. for the fun of it, i reach cpu temp shutdown purposefully all the time(105C), on all my devices, for years. heat has never ever caused any kind of damage to any of my devices. as the safety temps for battery and cpu shutdown are actually below the temps that our devices can handle before it can cause any damage.
Click to expand...
Click to collapse
Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
Sent from my Nexus 5 using XDA Premium 4 mobile app

russian392 said:
Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Battery degradation occurs on all Li-ion batteries. Heat has very little effect on the overall lifespan of the battery. You can expect about a 30% loss in capacity every year no matter your usage patterns.

russian392 said:
Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
im not planning on it. as i said the very first thing, out of curiosity.
now degraded batteries that early can happen, but its mostly because of manufacturing defects. the chances of that happening more than once in a row is fairly low. but you said multiple times. which leads me to believe that theres either something wrong with your phone physically, or maybe you are doing something wrong. as i said, on my g1(s), ion, og droid, nexus one, nexus s, galaxy nexus, nexus 4, nexus 7, and nexus 7, ive never had any issues because of heat or because of battery. i do all the testing for trinity kernel, while testing i try to "break" the kernel. part of that testing is keeping the temps right under the thermal shutdown temp for long periods of time. i have yet to see any kind of damage because of this(except for me "breaking" any test kernels).

raptir said:
Battery degradation occurs on all Li-ion batteries. Heat has very little effect on the overall lifespan of the battery. You can expect about a 30% loss in capacity every year no matter your usage patterns.
Click to expand...
Click to collapse
True that too. But there is enough research to support that heat does slowly degrade the battery.
Sent from my Nexus 5 using XDA Premium 4 mobile app

simms22 said:
im not planning on it. as i said the very first thing, out of curiosity.
now degraded batteries that early can happen, but its mostly because of manufacturing defects. the chances of that happening more than once in a row is fairly low. but you said multiple times. which leads me to believe that theres either something wrong with your phone physically, or maybe you are doing something wrong. as i said, on my g1(s), ion, og droid, nexus one, nexus s, galaxy nexus, nexus 4, nexus 7, and nexus 7, ive never had any issues because of heat or because of battery. i do all the testing for trinity kernel, while testing i try to "break" the kernel. part of that testing is keeping the temps right under the thermal shutdown temp for long periods of time. i have yet to see any kind of damage because of this(except for me "breaking" any test kernels).
Click to expand...
Click to collapse
Interesting. But I'll stay on the safe side.
Sent from my Nexus 5 using XDA Premium 4 mobile app

russian392 said:
Interesting. But I'll stay on the safe side.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
cool.
as everything is different depending on everyone else's experiences in life.. most important is that you are satisfied by doing it

simms22 said:
cool.
as everything is different depending on everyone else's experiences in life.. most important is that you are satisfied by doing it
Click to expand...
Click to collapse
You can say that again ?
Also...I notice that charging the phone bellow 80% (like even if I start charging at 75%) temps get to about 103° with my heat sink. But when it goes over 80% it starts to cool down. Still doing lots of testing and logging though.
Edit:
Here is something to read
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my Nexus 5 using XDA Premium 4 mobile app

russian392 said:
You can say that again ?
Also...I notice that charging the phone bellow 80% (like even if I start charging at 75%) temps get to about 103° with my heat sink. But when it goes over 80% it starts to cool down. Still doing lots of testing and logging though.
Edit:
Here is something to read
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my Nexus 5 using XDA Premium 4 mobile app
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yea, it charges "faster" before 80%, then slows down. then slows down again around 92%. oh, and that article is outdated. our batteries are a newer tech than when that article was written(2010).

Using a Wireless charger doesn't generate that much heat lol.
I don't use my device while charging it either.