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halesvb11

macrumors newbie
Original poster
Jul 10, 2008
21
0
just outside Chicago
anyone else experiencing this? i'm not talkin warm, i'm talkin if you hold it long enough you'd have to put it down. i'm charging it at work now (listening to aol radio) and its cookin.

anyone got anything?

fyi i updated to 2.2 friday night.
 
mine always gets hot while charging it if it is using another app thats why i never talk on the phone while charging it.
 
If I charge my iPhone G3 from the wall plug charger while actively using the iPhone continuously, it gets hot. It doesn't if I charge it while it's asleep. Looks like running both the charge circuitry and the CPU+display maxes out the power/temperature envelope.

Haven't tried putting it in airplane mode to see if the radios contribute to the heat issue.

.
 
If I charge my iPhone G3 from the wall plug charger while actively using the iPhone continuously, it gets hot. It doesn't if I charge it while it's asleep. Looks like running both the charge circuitry and the CPU+display maxes out the power/temperature envelope.

Haven't tried putting it in airplane mode to see if the radios contribute to the heat issue.

.


Guys i have covered this ( perhaps I can get a sticky )

https://forums.macrumors.com/threads/552317/

for the lazy here is what i have found

Guys stop posting and read what has been stated already... here are the facts


- USB output = 5v 500mah ( maximum allowed spec)
- AC output = 5v 1000mah ( maximum allowed spec)

- Car chargers 5v 500-2000mah ( maximum allowed specs)

The thing you guys don't seem to realize is that those ARE MAXIMUM allowed specs. I have a Belkin 5v 2000mah car charger that will STOP charging the iPhone if it overheats ( from using 3g, GPS + music all at the same time). When I realized this I was able to keep the back of the iPhone cool and was able to keep the phone charging for the whole trip.

Do I know the exact amperage draw of the phone ? NO, but I do know that it was less than 2000 mah ( otherwise the internal 2 amp fuse, which I verified was still intact) would have blown out.

The maximum draw the iPhone was designed for was 2.6 amps.



The most broad answer then is that when all the radios are turned on we get a amperage draw of between 1000-2.6 amps. Realistically the draw must be below 2000amps

The older apple car chargers will not work if you try to max them out because most of those are spec'd to max out at 1000amps. I bought a cheap Chinese iPhone 2g charger for my iPhone 3g, and the fuse blew out ( it was a 1 amp fuse), so obviously when the all the radios are on, there is a larger than 1amp draw.
 
I have also noticed that my phone gets very hot, much warmer than I remember before upgrading when I use it. I held the phone to my face today, and couldn't help noticing just how warm it was.

Let's see, terrible battery life, and now it runs hot. Hmmm, I think a downgrade to 2.1 is in order.

Jude
 
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