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Re: Is there such a thing as a perfect Touch Pro?
@ScrapMaker
This is a long post but bear with me...
Yesterday afternoon I had my battery go from 80% at noon to 10% at 3:00 (which REALLY P'd me off), only thing that I did different was use my bluetooth speakerphone for a good while (about 1.5 hrs) while on the road. The variations in battery life has "intrigued" me so I have done a little research with nuePower and found something interesting regarding power draw:
Using PPC 140-150 mA power draw (0.6W) (net life ~9 hours Continuous)
Phone radio on 350 - 600 mA Power Draw *** (2.4W) (net life ~4 - 2 hrs Cont.)
EVDO Radio On 600-650 mA power draw (2.6W) (net life ~ 2 hrs cont.)
Bluetooth Radio on 300 mA continuous 600 mA peak when advertising based on 33% advertising duty cycle on my unit about 400 mA average (1.6W) (~3.4 hours continuous)
Using Phone with Bluetooth Headset 800-950 mA (3.8W) (~1.4 hrs)
Looking at these numbers its obvious that "your results may vary" based on how you use the device. I am a heavy PPC user, moderate phone user (0.5 - 1 hr typical) and have my data set to drop the connection after checking mail (I'm using POP accounts)
***I found something REAL interesting with the Phone usage IF you place your hand at the top of the phone when talking (which I suspect is where the antenna is), I would see 600 - 620 mA power draw, holding it at the bottom (near the keypad) I would see 350 mA power draw which nearly doubles the talk time that you would see based on where you place your hand.
I went back and looked at the FCC Docs and the FCC found the power output for all the radios was between 0.25 - 0.29W. SO why are we seeing nearly 2W of power consumption to produce .25W of output? Seems to me there is an issue in the WCDMA and bluetooth Radios built in to the MSM7201A Chipset. I have not been able to find a datasheet on the chipset but I suspect there is a major BUG in the radio ROM as 10% efficiency in a transmitter seem extremely low to me...
Anybody else have any thoughts on this?? Anyone else seeing similar power usage numbers???
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