Here is an update from me. Remember: Bought 808 in Ukraine, experienced 3G lockups in Germany (in Ukraine there is no 3G qwith my provider), disabling HSPA reduced the lockup frequency, but still lockups in standard 3G, Ukrainian dealer refused to RMA the phone because they could not reproduce the issue in Ukraine, Nokia recommended me in this thread to bring the phone to a German Care Point.
Here is the update: The German Care Point rejected the phone because it was allegedly not on warranty. Argueing that the phone has been on the market for less than 6 months did not help - you bought it in Ukraine, you get your service there. Oh well. I thought mobile phones were called this way because they enable a mobile lifestyle, but obviously I was mistaken.
Now I experienced a lockup that, judging by all the symptoms (the way the phone locked up, what was happening when it locked up etc.), was exactly the same as the 3G / HSPA bug today, but I experienced it in Ukraine, while using mobile data via 2,5G / EDGE. This is new! I did not see a report about EDGE lockups so far in this forum.
My theory now is that the lockup frequency is proportional to the speed of the mobile data connection and antiproportional to its reliabilty. Probably HSPA is more flaky in genereally so this underpins my assumption I have been voicing for some time now that the 808 firmware is programmed for a theoretical optimum world, but can't cope under real life conditions (the same is true for the Wi-Fi issue, or for the plain situation when you have no data connection at all and the 808 will drown you in error messages that inform you about the connection being absent, which you are pretty aware of even without the 808 telling you ...).
The Ukrainian GSM/EDGE network in Kyiv is not too fast and rock solid, that's why I was not seeing problems there for a long time. The one lockup I had now occured indeed when I entered the subway - a zone where EDGE coverage gradually fades away as the escalator descends below ground and gets replaced by plain GSM without any data connectivity.
To the contrary, the network of my German provider O2 is very flaky in general (they are known for this, there is even a song about it from a famous comedian. :-). My experiences in Germany were that I could not use HSPA for more than a few minutes no matter what, the phone would lock up. I could use 3G stably when staying stationary at a place with good coverage in the city (e.g. a hotel room) and use 3G for hours without lockups, but as soon as I would travel (by care, train, foot - which means changing signal strength, traveling through zones without coverage) the phone would lock up sooner or later for sure. And I had lockups with this as well as with a different (more reliable <g>) provider all the time while I was staying at the seaside on an island with weak coverage.
So to sum it up, my 808 will lock up when the data connection is weak no matter what technology is being used (!), and it will lock up a lot quicker with a faster connection.
Several hard resets, using the phone without 3d party apps, upgrading to Belle FP 2 and so on all did not solve the problem.
After having had the lockup in Ukrainian 2,5G/EGDE network today, I too the phone to a Ukrainian Nokia service center. (In Ukraine it is bring in only, but luckily the service center is next to where I live). I was greeted very politely (which is unusual for this country) and the service clerk seemed to understand the problem. Maybe he was impressed when he heard that I discussed with Nokia developers and it also helped that I showed him the link to the page where Nokia says to take in phones with this issue for inspection, that is a few pages back on this thread. He admitted though, it was the first time he ever got his hands on the 808 and asked for a timeout to consult with his colleagues and probably Nokia.
I wonder whether they will only rewrite the firmware (which is necessary anyway, since the upgarde to FP2 broke several things on my phone which are not normal, i.e. others did not report those issues - my phone now reports "system error" whenever I turn it on), or whether they will offer a more comprehensive solution.
I'll keep you posted as to what comes out of this.
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www.deutscheschule.kiev.ua
BIG BUMMER!!!!
