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< Esato Forum Index > Sony Ericsson / Sony > Symbian phones > P990i: Hardware rev. R6A >>> R12A Bookmark topic

I'd like to keep this thread alive people, as I feel that between us we might be able to have have something of a breakthrough with regards to the conditions that cause the, at present, random seeming phone hangs. As I said mine tends to do it more often after using SEUS, to me this suggests that the system is made unstable by the manner of SEUS's access to the phone. I've also noticed a propensity for it to hang when it's been in the usb cradle for a long time.

This leads me to theorise that the problem lies either in the data port's subsystem or that it's somehow related to the power supply/charger. A possible issue with the power hardware was hinted at here:

http://www.esato.com/board/vi[....]ic=151483&start=30#post2051149

Is it therefore possible that SE had a bad batch of power output units? This would seem to explain why the problem isn't concistent across everyones' phones.

Anyone else got any thoughts?

Sorry guys, just had another idea. Maybe the problem is as simple as this : that the battery isn't always properly seated, and so it occaisionally, and very fleetingly disconnects - not long enough to shut down the phone but long enough to crash the software. As a lighting technician, I've seen this kind of thing occur with certain types of equipment, where a simple swap out of the power supply fixes the problem. So possible solutions could be either a) a new battery or b) placing a piece of card between the back cover & the battery to ensure a solid connection, by pressig the battery firmly against the pins.

This was obviously a concideration of SE's during the design of the phone as they have placed a soft plastic pad inside the back cover of the phone - but what if this isn't quite good enough?

I only think of this as since the last time I pulled the battery in an attempt to break a cycle of it crashin twice a day, I've had my longest uptime ever: 1d 7h....and oh B@L&*%KS!! it's just crashed again!!

[ This Message was edited by: AD on 2007-07-24 11:30 ]
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Posted: 2007-07-24 11:38:33
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I'm now doing my experiment with the card, but have had to place it under the bottom edge of the battery, as the spring connection pins work vertically. I'll keep ypu informed

To some of you this may seem a bit silly, but if the lockups are caused by a dodgy power connection, you never know.......
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Posted: 2007-07-24 14:56:24
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Well, if it really is a power related issue maybe that explains why the
problem seems to happen more often when the phone is in the charging
cradle (for me anyway). It also sometimes simply turns off and doesn't
reboot. This has only happened when its connected to the charger.
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Posted: 2007-07-24 17:05:32
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Yep, that's happened to me too, a couple of times. I guess it's nice to know that it's not just my unit, as it implies some kind of quality control faliure on behalf of SE, and thus the outside chance of some recourse if the problem persists.

Uptime with my slip of card:5h 46minutes and counting....

If anyone's interested, I'm using very thin card - I in fact choppped up a buisiness card someone gave me the other day.

[ This Message was edited by: AD on 2007-07-24 17:33 ]
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Posted: 2007-07-24 18:20:34
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Ok, so it was worth a try......my phone had crashed again by the end of the day

So now I'm adopting a policy of only having it in the cradle when absolutely nescessary.

Hey ho....
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Posted: 2007-07-25 10:42:22
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I just looked at this list of CDA numbers and since I bought my phone in Poland
and it originally came from Orange it should have the CDA 162008/23. Instead
it has CDA 162007/1 (Generic World 1) so obviously the guy I bought my phone
from messed around with it a bit before I got it
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Posted: 2007-07-25 13:01:11
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Sounds like he did the same as me & changed the cda so he could debrand the phone, I don't think this would cause the problems we're having as I've never heared of this causing problems before, and a lot of people have done it. Also my phone didn't get any less reliable as a consequence.
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Posted: 2007-07-25 15:27:18
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How do you know? Does the sticker in the battery compartment of the phone state that 'Orange' CDA ?

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Posted: 2007-07-25 16:51:55
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Nope, I found a site that listed CDAs. I wanted to post it here but now I
can't find it
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Posted: 2007-07-26 01:04:02
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Was it this one?

http://uiq3.sourceforge.net/wiki/index.php/CDA/P990i
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Posted: 2007-07-26 01:24:19
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