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Re: Best bang-for-the-buck Android device

Hi,
I'm blind here, so soldering won't be something I'll be remotely comfortable with.
I'm up in Canada, so I'll give the windows a try since it's well below freezing out right now.

Is there a theoretical safe temperature for the battery if the phone is going to be used? Boinc has it set to 40 C but should I go cooler if I want long term usage?

thank you

I would say try to keep the battery below 40C. When I had 40C set as max on my old droid turbo, the cpu was directly behind the battery and 40C on the battery would be very warm. I dropped it to 35C.

You mention being in Canada. Do you have attic storage or an unheated garage that has power and access to wifi? At my old house, I had attic storage above my attached unheated garage, and it was very cool up there in winter. Summer was another story. But once temps cooled down, I would move my crunching phones up to that unheated area of the attic. They stayed nice and cool even at 100%, and still close enough to the router so wifi was nice and strong. Other ideas to consider.
[Nov 24, 2018 7:08:23 PM]   Link   Report threatening or abusive post: please login first  Go to top 
wolfman1360
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Canada
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Re: Best bang-for-the-buck Android device

Hi,
I'm blind here, so soldering won't be something I'll be remotely comfortable with.
I'm up in Canada, so I'll give the windows a try since it's well below freezing out right now.

Is there a theoretical safe temperature for the battery if the phone is going to be used? Boinc has it set to 40 C but should I go cooler if I want long term usage?

thank you

I would say try to keep the battery below 40C. When I had 40C set as max on my old droid turbo, the cpu was directly behind the battery and 40C on the battery would be very warm. I dropped it to 35C.

You mention being in Canada. Do you have attic storage or an unheated garage that has power and access to wifi? At my old house, I had attic storage above my attached unheated garage, and it was very cool up there in winter. Summer was another story. But once temps cooled down, I would move my crunching phones up to that unheated area of the attic. They stayed nice and cool even at 100%, and still close enough to the router so wifi was nice and strong. Other ideas to consider.


This is actually a great idea. I'll give this a shot!

Yes - I'm noticing 40 c is just a little too warm, I think. The CPU appears to heat up a lot more on the top side of the phone too.
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Re: Best bang-for-the-buck Android device

Yeah on all the phones I have disassembled over the years, the processors have always been on the top portion of the phone/tablet. The battery takes up most of the central part, and the charging port is usually at the bottom. The only phone I have disassembled that was any different was my droid turbo. The CPU was more in the middle, sandwiched between the battery and the screen. Cooked the battery really quick. I have since remedied that situation but not before the first battery turned into a balloon.
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KLiK
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Re: Best bang-for-the-buck Android device

Guys, you that use Android TV devices such as MXQ, which is also in my possession. It doesn't have the battery.

But how much do you leave it to go up with temp.?
Just searching for Tjunc for the CPU of that MXQ Android TV...
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Former Member
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Re: Best bang-for-the-buck Android device

Guys, you that use Android TV devices such as MXQ, which is also in my possession. It doesn't have the battery.

But how much do you leave it to go up with temp.?
Just searching for Tjunc for the CPU of that MXQ Android TV...

What chipset is it running? You should be able to find it using cpu-z app to see what safe operating temps are. It will probably throttle itself around 80C from what I have seen of other android devices. I think 80 is a little too high myself. The android box you mentioned from a google search looks like it could be easily opened. I would open it up and look to see if they have put an adequate heatsink on the chip. If not, add a heatsink, and if possible, maybe even a small USB powered fan to add active cooling. For the heatsink, I have found that there is a thermal glue that can be mixed like an epoxy and when dry the heatsink will hold solid against the chip as opposed to a thermal paste that would not hold it.
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KLiK
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Re: Best bang-for-the-buck Android device

Guys, you that use Android TV devices such as MXQ, which is also in my possession. It doesn't have the battery.

But how much do you leave it to go up with temp.?
Just searching for Tjunc for the CPU of that MXQ Android TV...

What chipset is it running? You should be able to find it using cpu-z app to see what safe operating temps are. It will probably throttle itself around 80C from what I have seen of other android devices. I think 80 is a little too high myself. The android box you mentioned from a google search looks like it could be easily opened. I would open it up and look to see if they have put an adequate heatsink on the chip. If not, add a heatsink, and if possible, maybe even a small USB powered fan to add active cooling. For the heatsink, I have found that there is a thermal glue that can be mixed like an epoxy and when dry the heatsink will hold solid against the chip as opposed to a thermal paste that would not hold it.

Thanks, will think about opening it.

Found the proc though: ARM Cortex A5...can't find data about the Tjunc though...
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Former Member
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Re: Best bang-for-the-buck Android device

The technical reference manual does not list anything either. Try downloading cpu-z from the playstore and it should be more specific
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cristipurdel
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Re: Best bang-for-the-buck Android device

I have the amlogic S912 TV sticks (octa-core) and they throttle at around 80degC also.
Better stick with phones since they have better cooling capability.
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cristipurdel
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Re: Best bang-for-the-buck Android device

After a while, the amlogic S912 TV sticks start to throttle and need to reduce the cpu freq (0.63 GHz at 80 degC), basically making them badge hunters

my new Best bang-for-the-buck Android device is:
https://www.gsmarena.com/samsung_galaxy_j7_v-8778.php

https://www.worldcommunitygrid.org/forums/wcg...ad,40192_offset,40#600984
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Re: Best bang-for-the-buck Android device

After a while, the amlogic S912 TV sticks start to throttle and need to reduce the cpu freq (0.63 GHz at 80 degC), basically making them badge hunters

my new Best bang-for-the-buck Android device is:
https://www.gsmarena.com/samsung_galaxy_j7_v-8778.php

https://www.worldcommunitygrid.org/forums/wcg...ad,40192_offset,40#600984

Did you ever try opening the TV sticks? It looks like they are in two halves and the top could be taken off. At least from the pictures of TV sticks with that processor I found on a google search. Small heatsinks could be added with some thermal adhesive and may make a big difference.
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