Database Users

Many issues: caused by UMTS

Can someone help me understand if this is a general JJ issue, or a function of the AKU 3.2 Rom Update 1.90.96 (Radio 1.13.00). It's not identified in that thread:
Many of my JJ issues have been solved by turning off UMTS until I need it. My battery improvement is negligible (when measuring mA consumption), but the following used to manifest due to the phone's inability to switch between GSM and UMTS elegantly:
Calls frequently go to v.mail
Dialing results in 'Dialing...' message with no connection - or even worse I connect and other party can hear me even tho I believe it's not connected
Dialing results in 'This operation not allowed' or something like that
Several other issues I forget
All this went away when I turned off UMTS. My understanding is that UMTS and GSM are completely different functions, and the phone sees a UMTS signal and tries to switch to that. Unfortunately it's too weak and the phone does not know to give up and go back to GSM/GPRS. After around 15mins of battling, everything goes tits-up until I reset.
Is this something that everyone with moderate 3G/UMTS coverage experiences? Or is this a ROM/Radio version issue?

I have a very poor UMTS reception in my house and have the same problems. I have tried different radio roms. My current solution is just using GSM at my home and only UMTS at my workplace..

my too...
my case is similar. I had with radio 1.09 and now with 1.13. looks is a problem when you move between zones with umts and other only gprs and the phone gets crazy. I think is related new speed available form umts (1,8 and now 3.2) that are producing special situation in the device.

Thaks guys - more helpful than you know: I was considering a re-flash, and my JJ is SOOO customised I would have written off a week getting it all back into shape. The HSDPA change may also explain why I didn't have this issue with the first JJ in country in January, but am definitely having issues now.

craigiecraigie4 said:
Thaks guys - more helpful than you know: I was considering a re-flash, and my JJ is SOOO customised I would have written off a week getting it all back into shape. The HSDPA change may also explain why I didn't have this issue with the first JJ in country in January, but am definitely having issues now.
Click to expand...
Click to collapse
If you reflash only your radio, you wont loose your data..

TyTN dropping calls in a middle

Hi guys,
Can anyone help me... I have bought the TyTN just two days ago and since then I've been struggling with a very bad phone calls quality. I haven't been able to finish properly any single call since all of them are dropped in a middle. It looks like the phone is loosing reception whereas I know for a fact that there is a very strong signal in the location I am.
I've upgraded the software today but the problem still occurs. Do you know if this is a known issue or just this particular phone is broken?

rgnutek said:
Hi guys,
Can anyone help me... I have bought the TyTN just two days ago and since then I've been struggling with a very bad phone calls quality. I haven't been able to finish properly any single call since all of them are dropped in a middle. It looks like the phone is loosing reception whereas I know for a fact that there is a very strong signal in the location I am.
I've upgraded the software today but the problem still occurs. Do you know if this is a known issue or just this particular phone is broken?
Click to expand...
Click to collapse
Well seeing as you've upgraded the Radio and seeing as your case is quite extreme ie losing calls completely I think i'd try testing it using GSM only. Some folks have reported that if you are in an area where 3g is around but perhaps not always the strongest signal then the phone will swap around from GSM to UMTS. So you can try:
Start>Settings>Personal>Phone icon>Band
in top drop down box select GSM
in second drop down box select the GSM band for your area (if unknown try each until you get the working one)
IF this makes reception better/constant then you have the swapping bands issue and you can leave GSM selected and turn on UMTS when you are in a stronger 3G area.
If this makes no difference return the settings to auto for the drop down boxes.
If the above fails then have you got a new 3G SIM older cards can give problems.
An application that assists with setting certain bands only is Bandswitch or Commmgrpro - Here's an early version:
http://www.freewarepocketpc.net/ppc-download-commmgrpro-0-9-0-28.html
Mike

Thanks Mike for your reply.
Actually I did play with those settings a little bit but it didn't help. I'll go to the shop where I bought the phone and ask for help. Thanks for your attention.
RG

You know of any apps or way to get a shortcut onto the today screen to quickly switch between 3g and edge? Where I work is good 3g coverage, but where I live is right on the cusp of the connection ... so I find unless I turn off the "auto select" and manually choose GSM, I have dropped call problems. Would be great to be able to do this without having to go to phone settings each time.

Weinson,
Searching for BandSwitch by Daniel Herrero on this forum will reveal just such a tool. BandSwitch sits in your WM5 task tray and has the option to switch to GSM or UTMS or Auto with some time delays (before switching back) build in.
see - http://forum.xda-developers.com/showthread.php?t=286844

HERMES WORST NIGHTMARE - "the cell phone death trap"

I recently moved into a new ‘cell phone death trap’ apartment (apt).
I’ve seen my phone connect, I’m guessing; connect to four different cell towers from my apt. I’ve sat and watched it go from 2 bar E, disconnect, to 1 bar G, disconnect, to no bars 3G, disconnect, and so on….
But here’s the clincher…
Sometimes it will also connect to a full strength edge network, but it indicates it’s roaming by the Triangle icon. Now if I’m on that ‘Triangle” network, my phone works great, meaning I actually can make and receive calls!
But, I’m guessing again, because it shows it is roaming; it also does not like to stay connected to this network. Actually it prefers to switch itself back onto a weak edge network without any signal.
My phone battery doesn’t last more than five hours, NOT TALKING, just in standby because it is constantly switching towers.
At this point I want to throw my Hermes out a window! But I know that wont do any good, because anyone else who come to my apt and has AT&T/Cingular gets the same results.
So here’s my question:
“Can I force my phone to stay on a particular cell tower?”
If so, I love you….

you should re-post over in this thread Daniel's software might be able to solve your problem (or Daniel might have other ideas).

thank you for the suggestion. i tried that and he said, "Sorry nop. It isnt the pourpose of cmp or bs...."

I don't think you can force to a specific tower but you can force to a particular provider:
START/SETTINGS/PHONE/NETWORK/MANUAL
and also select whether you want to force GSM/WCDMA and the GSM/UNTS band:
START/SETTINGS/PHONE/BAND
Maybe by going this route you can lock onto a reasonable signal.
2 other alternatives... Sell the appartment... Buy a landline and donate the Hermes to me
taze said:
I recently moved into a new ‘cell phone death trap’ apartment (apt).
I’ve seen my phone connect, I’m guessing; connect to four different cell towers from my apt. I’ve sat and watched it go from 2 bar E, disconnect, to 1 bar G, disconnect, to no bars 3G, disconnect, and so on….
But here’s the clincher…
Sometimes it will also connect to a full strength edge network, but it indicates it’s roaming by the Triangle icon. Now if I’m on that ‘Triangle” network, my phone works great, meaning I actually can make and receive calls!
But, I’m guessing again, because it shows it is roaming; it also does not like to stay connected to this network. Actually it prefers to switch itself back onto a weak edge network without any signal.
My phone battery doesn’t last more than five hours, NOT TALKING, just in standby because it is constantly switching towers.
At this point I want to throw my Hermes out a window! But I know that wont do any good, because anyone else who come to my apt and has AT&T/Cingular gets the same results.
So here’s my question:
“Can I force my phone to stay on a particular cell tower?”
If so, I love you….
Click to expand...
Click to collapse

Are you able to change networks?
Are you able to ask your service provider the location of the towers and if they're planning either any upgrades or any more in the area?
If not you may wish to consider the first point, changing service providers.
I know what a pain it can be to have little or no service when needed. Personally, here in the UK, I'm on Orange. Where I lived in Wales it was either Orange or Vodafone that has a decent signal. When I'm out and about with work those are the two popular towers with o2 creeping up and some others too, but for the most part those are the strongest.
I don't, I'm sorry, have any better advice for you. Apart from leave your Hermes on charge when you're home near a window (safely) and carry a bluetooth earpeice around instead Good Luck with your Valiant Quest

ach2 said:
I don't think you can force to a specific tower but you can force to a particular provider:
START/SETTINGS/PHONE/NETWORK/MANUAL
Click to expand...
Click to collapse
i went to that tab and all i have is a Find Network button, which does nothing...no manual option
ach2 said:
and also select whether you want to force GSM/WCDMA and the GSM/UNTS band:
START/SETTINGS/PHONE/BAND
Maybe by going this route you can lock onto a reasonable signal.
Click to expand...
Click to collapse
I've tried this method as well and it does not help. apparently both the good and the band networks all fall under GSM(900+1800)+UMTS(2100). The other two band options never find a network.
ach2 said:
2 other alternatives... Sell the apartment... Buy a landline and donate the Hermes to me
Click to expand...
Click to collapse
I'll consider it....thank you for your suggestions, I REALLY APPERCIATE ANYONES (constructive) FEEDBACK.

Elwyn M3100 said:
Are you able to change networks?
Are you able to ask your service provider the location of the towers and if they're planning either any upgrades or any more in the area?
If not you may wish to consider the first point, changing service providers.
I know what a pain it can be to have little or no service when needed. Personally, here in the UK, I'm on Orange. Where I lived in Wales it was either Orange or Vodafone that has a decent signal. When I'm out and about with work those are the two popular towers with o2 creeping up and some others too, but for the most part those are the strongest.
I don't, I'm sorry, have any better advice for you. Apart from leave your Hermes on charge when you're home near a window (safely) and carry a bluetooth earpeice around instead. Good Luck with your Valiant Quest
Click to expand...
Click to collapse
Thank you for your suggestions. Unfortuantly im locked in a 2yr contract, thats how ****ty american cell phone companies do things. Plus, the better providers in the area dont use SIM cards (ie. Sprint/Verizon), so that would mean bye bye Hermes.
Ill will go by the Cingular store and ask about the possible service upgrade, but those fools dont really know whats what, thats why im on xda-dev!
I like the bluetooth idea, ill try find a "sweet spot" in the apt and try that method. Thanks again!

"I have dream..."
My idea just seems possible, however i cant program so who am i too.....
The idea of having blocked cell id numbers. If i could FieldTest or somehow extract the cell ids from the towers i dont want, then create a file that the phone checks against before joining a tower.....
I dont know, just a dream i suppose...

In both cases (roaming and not) are you registered in same operator?

If you're having a difficult time maintaining solid cellular reception, you might want to consider buying an external antenna. Refer to my post here regarding an antenna that can be purchased from Radio Shack. The antenna is now on clearance for $20 and the pigtail is $10. This may or may not help depending upon your location in relation to the towers, but if you try it out, let me know how it works.
Cheers

Yeah, I'm on an 18 month contract... But I'm about 8 months in now
You might even be able to get bluetooth repeaters once you find your, ahem, sweet spot

danielherrero said:
In both cases (roaming and not) are you registered in same operator?
Click to expand...
Click to collapse
i believe so. the only reason i think it's roaming is because of the Triangle icon. But my SIM is only authorized for one operator, Cingular.
is there a better way to check?
Thank you very much Daniel!

Lancealot said:
If you're having a difficult time maintaining solid cellular reception, you might want to consider buying an external antenna. Refer to my post here regarding an antenna that can be purchased from Radio Shack. The antenna is now on clearance for $20 and the pigtail is $10. This may or may not help depending upon your location in relation to the towers, but if you try it out, let me know how it works.
Cheers
Click to expand...
Click to collapse
i would be willing to try those products but i believe they're now fully discontinued. Either of those item numbers from your post no longer exsist.

No problem
taze said:
i would be willing to try those products but i believe they're now fully discontinued. Either of those item numbers from your post no longer exsist.
Click to expand...
Click to collapse
Call your closest Radio Shack and ask if they have either of those catalog numbers in stock. Worst case scenario is that they won't, however they can check the districts perpetual stock and see how many are available, and if you ask nicely, they can have the antenna and pigtail shipped to their store so you don't have to run all over creation just to get it.
...An even worst case scenario would be if you didn't live in the US or didn't have any Radio Shacks close by.. however I might know of someone who could use their employee discount to cover shipping costs Let me know if you have any questions.

weinson said:
you should re-post over in this thread Daniel's software might be able to solve your problem (or Daniel might have other ideas).
Click to expand...
Click to collapse
Taze,
I would also recommend that you try one of Daniel's applications - he is working on Comm Manager Pro but I think that Bandswitch will probably help you. I find similar problems to those you describe at work here in the UK with T-Mobile and my battery would often run low even during a day at work. The problem appears to have been caused by the Vario II (Hermes) spending all day jumping back and forward between networks whilst hunting for the best signal. Although the Bandswitch application (very small footprint) will not increase the signal you may find that forcing the phone to operate in a particular band helps - this is very easily achieved via the Bandswitch interface rather than going into settings each time. I now regularly switch to GSM each day when I get to work and it has solved my battery run-down issue completely!
Comm Manager Pro does much the same and more. It allows you to define a location (according to Cell ID and LAC Code) from which you can set the CMP application to (amongst other functions) switch to a particular band - or even turn the phone off).
Given what you have said this may not help but I would certainly give it a go. Good luck.
Regards

tony.wheeler said:
Taze,
I would also recommend that you try one of Daniel's applications - he is working on Comm Manager Pro but I think that Bandswitch will probably help you. I find similar problems to those you describe at work here in the UK with T-Mobile and my battery would often run low even during a day at work. The problem appears to have been caused by the Vario II (Hermes) spending all day jumping back and forward between networks whilst hunting for the best signal. Although the Bandswitch application (very small footprint) will not increase the signal you may find that forcing the phone to operate in a particular band helps - this is very easily achieved via the Bandswitch interface rather than going into settings each time. I now regularly switch to GSM each day when I get to work and it has solved my battery run-down issue completely!
Comm Manager Pro does much the same and more. It allows you to define a location (according to Cell ID and LAC Code) from which you can set the CMP application to (amongst other functions) switch to a particular band - or even turn the phone off).
Given what you have said this may not help but I would certainly give it a go. Good luck.
Regards
Click to expand...
Click to collapse
im going to try bandswitch today and see how it works. thank you for the suggestion!
i wish daniel could add the feature of blocked, preferred, of locked Cell ID's. that would be worth a good amount of money to me....

Hi.
I would like to help you.... I can detect cells and lac but I cant force radio hardware to attach on a particular cell. This a task for Radio ROM. The only posibility (maybe) would be if the operator names are diferent. Could you go to settings a search for operators? Maybe your operator has different name in roaming than non roaming. In that case It would be easy to help you....

Oooo if FieldTest were a controllable application....
Ok what I’ve discovered so far after watching FieldTest for about an hour.
The Good Connection -
LAC 0020
MNC/MCC 31017
NCELL INFO1 700-80 dbm <---- (at least four out of six NCELL maintain a steady 700-80dbm, often all six NCELL)
NCELL INFO2 700-80 dbm
NCELL INFO3 700-80 dbm
NCELL INFO4 700-80 dbm
NCELL INFO5 700-80 dbm
NCELL INFO6 700-80 dbm
BAND 2CS
CHANNEL 1:CCCH (stays, doesn’t change)
The Bad Connection
LAC d6ef
MNC/MCC 31380
NCELL INFO1 140-100 dbm
NCELL INFO2 140-100 dbm <---- (i get two NCELL at the most 140 each, rarely four NCELL, never more)
NCELL INFO3 0
NCELL INFO4 0
NCELL INFO5 0
NCELL INFO6 0
BAND 3:850 (once I saw it switch to PCS on this same MNC)
CHANNEL 1:CCCH/0:BCCH/255<UNKNOWN> (switches between these quite frequently)
So what I’ve interpreted from all that is.
Well I’ve confirmed my ****ty connection. Even though the phone often shows two bars, I can’t make or receive calls. Based on the NCELL db numbers and the constant channel changing, that **** just don’t work.
Most importantly, the phone is always trying to switch to the highest possible band. Because PCS is a lower band than GSM 850, my phone won’t stay on the PCS connection.
O yes, another discovery is, in WM6, if you are connected to a PCS band network, it displays the Triangle icon as if you are roaming but in fact it is not roaming.
So Daniel since you seem to be the best chance for a better life [for my Hermes]:
I need a way to force band selection beyond just GSM and UMTS.
I tried BandSwitch and it does not work for me because all my available connections fall under GSM.
And even beyond that I’d like to be able to force MNC’s, as I believe they are the specific network number.
Or can I block a LAC?
In settings, I only have one operator, Cingular, “Home of the most dropped calls.”

Hi.
I undestand perfectly your frustration and I will try to do what I can althought It doesnt seem easy thing because there isnt any(known) api to manage Radio Rom. Fieldtest is OEM dependent and I imagine It only works for only one manufacturer of radio hardware chip.
Ok, first try. If you start radio phone 10 times....
1) how many times your phone register to roaming (and wished) network?
2) If registed to roaming network, how much time (aprox) stays on it before register to bad cells?.
Why? well ,CMP executes actions when you enter on some place (compound by cells and lacs). You could create a place with your hated cells and then associate the action "reset radio" when registed to those cells (or lacs). In this way if your device falls into bad cells it would be resetted (only radio, not phone) until registed to good cells...
Only an idea....
Dani

If you can determine the direction of the "bad" towers, try lining your walls with lead sheets to block their signals and letting you connect to a prefered tower.

Signal problem in PDA2K..

hey guys...this is my first post here...
my pda2k keeps on dropping signals and sometimes halt during a call...
at first.....as instructed..2 time restarting solved the problem..
can you guys plzz help me out.......im using wm6
thnx in advance

What version of Radio do you using ? Try to upgrade to the last version.

my BA info is as follows
ROM version 5.60.00 WWE
radio version 1.12.00
well from where can i get the latest version of radio??

wel..i found it..and i am upgrading radio...
less see what happens

.....upgraded to 1.15.00
....no success......
im not the first one to have this problem..it ws in 2003. 2005 and now in wm 2006 now....
dunno what to do.....dont wanna throw away my pda2k

Maybe it is an hardware problem?

If your problem is in WM2003, WM5 and WM6, just get the phone to a repair or a recycle center....

but the thing is ..it was working fine....
and after installing a resh rom...it works for like 2 days with no problem...
im sure that its not hardware issue....
its the same problem....which everyone esle is having in this forum..abt signal dropping...dun think tat this harware problem can come to lot ov ppl at the same time...

the problem is with the phone company...
my pda2k also gives me similar problems...
but when i'm travelling to some other countries and using a local sim card there... i do not see any such problem... even while roaming sometimes... i do not see any problem with the current sim card.
i think it is the home service provider which has the problem.

If you have signal dropping, replace the flex cable.
The flex cable signal dropping is a common problem to any slide phone.
In fact I slide the phone halfway to test the signal if it will drop or not.
No signal drop means good flex cable.
Same case with Nokias and other phones.
I've had my friend's BA flex cable replaced and signal drop is solved.

also, one old battery can do that issue.
with my older battery, it used to cut connections sometimes. with the new one, keep connection.

hmm...but the thing is...that this fone was working fine in my country i.e Pakistan..but its giving problem here in canada.......and it actually came from canada before....
i dont know what to do....there were also issues like that with my imate-Pocket pc before...and now same is with PDA2k...
i have chaged a lot of sims...but no success.......

I personally believe that there is a bug on the radio dll.
If you are using WM2003, try this workaround to see if it helps: http://forum.xda-developers.com/showthread.php?t=340557
In your case, activate only the 1.900Mhz band or the 850 / 1900 band only. I believe that the former is better, though.
I've been only using it for the last 2 days, but so far so good.
JP

Well same problem here in Bulgaria. We have 3 Telecoms. Unfortunately i have subscription to one of them and some times like every couple of months I have the same problem. Green light blinking, but when someone is calling me - out of service. It rings, but after i pick up - it drops the call and gives "No service" This last for about a day or so. When i switch sim cards to another service provider - it works fine. The same thing happens when I travel from one town to another. I thing this is due to poor software configuration in the GSM towers. Overall for three years this happens to me like 10-15 times for couple of hours to one day. And I have this problem only with one provider only. No work around as far as i know.. Sorry

signal problem partially solved.
JPBRA said:
I personally believe that there is a bug on the radio dll.
If you are using WM2003, try this workaround to see if it helps: http://forum.xda-developers.com/showthread.php?t=340557
In your case, activate only the 1.900Mhz band or the 850 / 1900 band only. I believe that the former is better, though.
I've been only using it for the last 2 days, but so far so good.
JP
Click to expand...
Click to collapse
Guys,
Definitely the problem is software. I'm from Brazil and my operator is TIM. I tried many ROMs (at least 10) with the same symptom: if the phone misses the signal, I get into troubles to find the signal again and it keeps finding another operator instead TIM (in my case it only finds Vivo - which is 850Mhz).
After those many trials, I found a ROM that solves the problem partially. It's the PV DVH 19701 ( http://forum.xda-developers.com/showthread.php?t=390008&highlight=19701 )
With this ROM, it still looses the signal when on a place where the signal is not present and don't find while returning to a place which the signal is present, BUT, I just tap the antenna on the top of the screen, tap settings > network and finally tap "find network" and VOILA, the signal is back without much pain!!
One more thing is a little change on the registry according to a recommendation from Microsoft. Using one registry editor, go to:
HKCU\ControlPanel\Phone and change the value for "Features" parameter from 204c7d8 to 206c7d8. Remember that before you change, you need to choose the view mode to hexadecimal.
That's it folks...have fun!

HSDPA, will donate for help!!

Hi guys, i know this is a common problem amongst some of us, there are several threads discussing the connection drops but please there must be someone out there who knows something about it.
Basically with HSDPA enabled, the connection will last a random period of time before disconnecting by itself and displaying: cannot connect for an unknown reason.
When HSDPA is turned off, only 3G is used, although this works fine, it is fairly slower.
I am on T-Mobile UK, I have phoned their technical support, we have established it is not the sim card but the phone itself and have tried a variety of steps to solve this, for example receiving band settings for WCDMA, this has not fixed the problem.
I have tried changing the username and password combinations and have tried every combination of every advanced network option. I have used the T-Mobile stock rom 1.43, official HTC ROM 1.66, duttys hg, energyROM, artemis 5.0 and artemis 5.5 (would recommend btw) using MTTY before every flash, and every single different radio combination.
Myself, and many people here would be very grateful for any help posted.
Thanks in advance

Why don't you try Settings > Connections > Advanced network > GPRS tab > change from PAP to CHAP.. and reset... or viceversa.. that helped for me..

Thanks for the post, i've tried all that i've tried all advanced settings, at most they last for a day or so but after a while the connection dropouts seem to worsen

Ok ive just gotten off the phone for the third time with the technical support
basically what they've said is that the hsdpa WILL disconnect because the mobile towers simply can't handle the traffic.
He said in his honest opinion I should disable it because it simply won't work well and there is no fix.
Taking the piss juuuuust a little bit

Mine on t-mobile uk will show H, but usually drop down to 3G. It won't give me an error when it drops down though.
It sounds like its not transferring from H to 3G.
To be honest, i was unaware t-mobile ran HSDPA till I got my HD2 (never showed on my BB).

mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!

For my personal experience, I have for over a month, on versions 1.48, 1.66 by HTC, artemis versions, versions of other French chefs. had no problems,
Login Exchange push 24/24 without any cuts, I solicited the network with opera I passed automatically 3g H, and since February it to completely fall with the problems that everyone encounters (lost connection for several minutes , unable to connect to 3G without hard reset)
to remove the sim chip, I try with another chip of the same operator, another chip from another operator, the problem is still there.
For several days I have also continued a Touch HD, it faces no problems, no problems in connection 24/24.
In short, impossible to challenge any operator, any base station, any sim card.
It is then that the problem come from HD2:
-Software: We all try every combination of rom and radio rom possible.
It is the hardware, maybe the chip integrated into a concern for design, manufacturing concerns on some series, may be dysfunctional due to incompatibilitée between several chips of the phone, short, HTC should look into the problem.

cgrec92 said:
mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!
Click to expand...
Click to collapse
correct, it never disconnects.
It will switch seemlessly between them, when using or not using.
same one it came with. O2 HD2.
ROM 1.43.206.4 (70315) WWE
RADIO 2.04.50.22_2

I've also been struggling with this problem ever since I got my HD2 three weeks ago. However it seems like only a few people experience this.
My case is exactly like cgrec92 described. I'm on a 3.5G network in Denmark (3 Mobile), the phone shows the 3G connection at all times. When things do work and I use Opera/weather/Twitter/email etc, the symbol changes to H and I know the data connection is functioning. I can be using this for a whole hour without any problems.
However, if I put the phone down for a while and then pick it up again to use one of its data services, very often it does not connect to 3.5G (or H) anymore. It will still show the 3G icon on the screen, but there's no data connection. Then I go to Connection Manager and I can see that data connection shows as Off - and after a few seconds it goes back to On by itself That does not mean the problem is solved, as the phone still fails to establish any data connection. What I need to do then is manually turn off data connection and re-enable it again, which makes the 3G symbol immediately change to H. Then everything starts working again - until the next time it stops working...
I contacted the HTC customer service and they said it might be a driver-related issue, recommended a hard reset. I did that and for a few hours I thought it solved the problem, but no, data connection still disconnects by itself.
I spoke to 3 Mobile's technical service and they told me to update my software, which I had already done previously (I'm running stock 1.66 ROM Danish). They also said they never received any such complains about the HD2.
Like cgrec92 I've also played with all kinds of network/band settings, but it did not make any difference.
***
One question: isn't the phone supposed to automatically connect via EDGE when it cannot connect via HSDPA? Because in my case it will only establish data connection via H, never EDGE.
Any advice is greatly appreciated!

My take on this FWIW
It's not the phone!
It's the radio ROM installed.
I live in an an area where T-mobile say I can't get HSDPA.
However, I know that I can. How? Because 3 network uses the same local cell and transmitter as T-mobile and their signal will rip your eyes out!!!!!!!!!
All information obtained from a good friend of mine who works for BT, who, service manage the cells for the networks.
Plus, in this location, the cell traffic is then handled by BTs digiatal backbone which takes it who knows where after that.
So I have a very isolated situation in which I know there is a decent HSDPA signal, but I have had trouble with drop outs on my two previous phones (Nokis 5800 and HTC Touch Diamond 2) and originally on my two T-mobile mobile broadband feeds using Huawei E220 cell network modems.
All fixed when I finally found the right Radio and flashed it on the phones and unlocked and flashed the latest modem firmware.
My broadband connections are always on and never drop out and my HSDPA signal on my HD2 is through the roof!
To further emphasise the point all the equipment is used (when home based) behind solar glass which is notorious for blocking mobile phone signals.
Land on the best one and you will get incresed battery life as well.
Bottom line is try the latest radios (2.08.50.08_02 in my case) and I think you may be surprised at the results.
Current result of speed test 09.31 hours
ADSLSPEED.COM | Speed Test
3 minutes later
ADSLSPEED.COM | Speed Test

I have the same problem with the connection dropping. What I did to make it work was to disable HDSPA and putting GPRS to CHAP instead of PAP, and so far I have no problems at all

Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?

DORMIU said:
Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?
Click to expand...
Click to collapse
Erm!
It's your radio!
But, I think I did say that in a previous post.
You had a helpful fellow who sent you updated settings?
And he thought that was going to fix your problem?
That was helpful!
It's your radio!
The technicalities are beyond a customer assistant at the end of a phone. They work from a script.
I'll send you the settings.
Have you done this?
Have you done that ?
Never heard of anyone else with your problem!
It's your radio!
T-mobile uses PAP protocol (at least they do here in the UK) and it's a handshake protocol so changing that won't really do anything to the signal definition.
You have it or you don't.
It's your radio!
There is no "production fault".
You are not "lucky" or "unlucky".
You are in an area where you will suffer from this because of the ???????
THE RADIO!
I think I have made my point.
If it turns out that you don't have a radio issue then please feel free to admonish me.
Until then----------
It's your radio!

well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help

Yes, I was about to mention something similar. I haven't tried combining different ROMS & Radios myself, but I know people like cgrec92 who have with no good results.
And if it is the radio, then every 3 Denmark user like me would be experiencing the same problem, correct? I don't think that's the case. Actually when you read the forums you will find users from different countries with this problem, and they/we are not the only ones with a certain combination of ROM/Radio.
So yes, by disabling HDSPA I finally managed to have a stable data connection (but no 3.5G, obviously). At this point no one seems to know the cause of this issue, but I suppose it's naive to expect a future ROM to solve it, after all it's not a widespread problem. Is HTC even working on it? Are we sure it's not our devices that are faulty?
I honestly have no idea, but I cannot just accept this problem and live with it after all the money I put into this phone. That's why I brought up the possibility of having it exchanged for a brand new one in hopes that it will not have this problem.
Any ideas?

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
I referred to my radio in my previous post -20.08.50.08_02.
My OS ROM is Leo Lite 3.
Connection setup used and no further settings.
My explanation for this is the fringe nature of the received signal.
The radio its constantly 'hunting' for a signal and the radio software has difficulty in locking on.
BTW OS ROM and settings ready don't affect the efficiency of the radio signal.

MidnightDraven said:
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.
Click to expand...
Click to collapse
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the same ROM & Radio as us and in the same network. And yet they do not experience this problem.

Ive have similar issues but it depends where i am it appears that some towers its ok where others its not!

mo
DORMIU said:
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the
same ROM & Radio as us and in the same
network. And yet they do not experience this problem.
Click to expand...
Click to collapse
The radio differentiates between all the different levels and types of signal and it depends on how exact it interprets the signal. They are supposedly optimized before release and then re optimized with each newly released version. Network operators then have their own network parameters and again the radio has to accommodate this as well. One radio will never satisfy all these criteria and some of you will be in the wrong place at the wrong time on the wrong network with the least effective radio.
I can assure you that I most certainly do understand the problem and that is why, in my own case, I have resolved it.