[Tilt, TyTN II, MDA Vario III General] louiscar:
Buster,

This is a long thread, so excuse if you've published the figures I'm after somewhere in here.

Have you got your own figures when your phone is in "good condition" that show the difference in current coming out of standby for 3G and G connection no other apps running.

I like many others arrive at threads like this because we didn't have a problem before but one has arisen.

Although I can't confirm that I have experienced any such GPS problem increasingly I noticed that my phone failed to start up and this was sometime after a GPS trip .. perhaps. The last time (a few days ago I decided to get to the bottom of it), especially as I was finding in the morning it had discharged when it had enough power to last the night.

The symptoms: Pick the phone up (once it was in flight mode so this could be the problem you're describing), it reboots and powers down before it finishes booting. After applying a charge I noted the battery level was around 13%, enough to have booted.

So on to some tests which probably show that if I had a GPS problem it's wasn't present on the tests however, this is what I found.

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3G turned on coming out of standby typically 120 - 175ma recorded.

Left in standby around 15 mins will drop by 1-2% easily.

G turned on coming out of standby typically 4 - 7ma. That's good.

Left in standby for 15 mins 0% drop in fact over 4 - 5 hours only 1% drop recorded.

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OK so the GPS problem isn't there at the time but I'm surprised nevertheless because I've never turned 3G off and didn't notice any real issues in the past.

I did do some GPS toggling before these test so may have kicked it out of the bug and I've also done the tests after a hard reset to factory defaults. No difference between my set up and factory set up.

Currently searching all the threads and depending on how much drain one experiences it appears that the problem could well be any of the following.

1) Your GPS problem

2) Motherboard failure (according to HTC's own service manual I can eliminate this as they state that standby current must be under 6ma and idle under 65ma)

3) Radio version (which probably includes reports of wm6 and wm6.1 performing differently)

4) Battery getting tired. (At least one person has reported attrocious battery consumption on a refurb unit from HTC and excellent once the battery was replaced)

5) Possible use of non HTC car chargers. (reports of actual damage to just won't charge with some leads)

I'm now trying to quantify the drain I'm seeing. With G on it's very good with 3G it's not so good but may not account for the problems I saw on occasions where it wouldn't start up wouldn't charge in the car (red light) etc.

I see threads where people claim 10% loss over 4-5 hours of normal use - of course we need to know what normal use is but I'm talking standby here not usage. I'll easily lose that just on Sb if 3G is on. A lot of varied results to be frank.

So one question I'd like to ask you is that when you've established that the GPS bug isn't present in your device what is your 3G standby current?

I have at least established that my hardware is ok but I haven't eliminated problems 4 and 5 above. 5 is worrying because I use a generic charger. It's always worked fine but on two occasions I used someone elses and it went red light on me and didn't charge at all. This could be because pin-outs vary or some other reason. It could also be because (when I've experienced it ) the HTC wouldn't turn on so the battery was too low and this could actually be normal behaviour, ie you need to use mains when it gets this low.

My brother tells me if he's got usb charge off when syncing his won't charge - I've always had that on so can't confirm with my generic charger.

Of course the possiblity of battery getting tired is a possible explanation of the machine refusing to pull up with 10 -13% power but first I want to establish some figures here and I'm sure if I come across the GPS bug my current will rise regardless of phone connection.