New iPad Garners 98% Satisfaction Rating, Tops 'Consumer Reports' Rankings

[MacinDoc]

I have to disagree with you here. This is not in the area of the LTE chip. This is where the GPUs are. If an LTE chip can produce that much heat, then it's using way too much power.

According to the iFixit teardown, the LTE chip is near the end of the logic board closest to the top of the iPad (you can tell from the position of the camera and the docking connector on the teardown and from the shape of the logic board). By CR's thermal images, the largest heat signature is exactly where the LTE chip is on the teardown, two thirds up the left side of the iPad.

And yes, if the antenna power is maxed out, the LTE chip can produce (relatively speaking) too much heat and draw too much power. If you ever carry a cell phone with variable antenna power in a shielded area for a prolonged period of time, you will know what I mean (seriously, when I'm just carrying my phone in the basement of the hospital where I work, it gets hotter than it does when I am at home using processor/graphics-intensive apps, but this effect goes away with the antennas turned off while in shielded areas, which also has the effect of considerably increasing battery life). I believe excessive power consumption was the reason Apple passed on the crop of LTE chips available at the time that the iPhone 4S was introduced.

Interestingly, most posts I have seen on the internet have mentioned that the warmest part of the iPad was the lower left corner. It seems as if most posts inspired by the CR article failed to appreciate where CR said the hottest spot was.

 

[thetoad30]

https://forums.macrumors.com/posts/14626819/

As I stated I would, I eat those words.

I clearly stated overheating when I should have stated hotter. My intention was hotter, however, as that's the line I've been using.

Thank you for pointing out the mistake - I will fix it (EDIT in the other thread.

And just for note, the attitude you display in your comments still doesn't cease; until it does, I am done discussing this with you. I don't need the disrespect, frankly.

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According to the iFixit teardown, the LTE chip is near the end of the logic board closest to the top of the iPad (you can tell from the position of the camera and the docking connector on the teardown and from the shape of the logic board). By CR's thermal images, the largest heat signature is exactly where the LTE chip is on the teardown, two thirds up the left side of the iPad.

And yes, if the antenna power is maxed out, the LTE chip can produce (relatively speaking) too much heat and draw too much power. If you ever carry a cell phone with variable antenna power in a shielded area for a prolonged period of time, you will know what I mean (seriously, when I'm just carrying my phone in the basement of the hospital where I work, it gets hotter than it does when I am at home using processor/graphics-intensive apps, but this effect goes away with the antennas turned off while in shielded areas, which also has the effect of considerably increasing battery life). I believe excessive power consumption was the reason Apple passed on the crop of LTE chips available at the time that the iPhone 4S was introduced.

Interestingly, most posts I have seen on the internet have mentioned that the warmest part of the iPad was the lower left corner. It seems as if most posts inspired by the CR article failed to appreciate where CR said the hottest spot was.

This is very interesting. I really don't have much more to say, because as you said, it could be a variable in their tests.

If this is the LTE chip, it really doesn't bode well for an iPhone 5 with LTE, does it?

EDIT: I really want someone to replicate, or attempt to replicate, the CR issue. We would then be able to tell if this is a design flaw, a bad iPad, or a compromise in which Apple determined that there would be a low chance of the antenna not receiving a signal.

Curious how this would work for an iPad in the mountains, or on a plane?