Database Users

2.2 modem in 2.1 rom

I used MODEM_I9000XXJPC.tar.md5 with the I9000HVJH1 rom with great success.
Very good reception and the not a single error so far.
How to install:
Use odin to flash the MODEM_I9000XXJPC.tar.md5.
No repartition and no PIT.
no guarantees u will ha same success to...

Looks interesting! Ive been facing some problems with EDGE connectivity with 2.1. Will try this out this evening and post my results. Thanks for the heads up
Sent from my GT-I9000 using XDA App

The other way round doesn't work - you can't use a 2.1 modem in a 2.2 ROM. It sortof works, but no data goes through the 3G/HSPA connection.

i tried this and it works on JM7 tatuyuma rom! thanks a million DocBone!

Does the MODEM have any effect on GPS reception? Or is that part of CODE? Just curious.

Lalaca said:
Does the MODEM have any effect on GPS reception? Or is that part of CODE? Just curious.
Click to expand...
Click to collapse
Not sure, but my gps locks instantly now. Did not do that before..

DocRambone said:
Not sure, but my gps locks instantly now. Did not do that before..
Click to expand...
Click to collapse
That sounds amazingly promising. Might just give it a whirl.
Sent from my GT-I9000 using XDA App

do i have to uncheck "F. Reset Time" before flashing this modem file?
what does "F. Reset Time" do while flashing?

Works like a charm. Thanks for the advice Doc!!

Lalaca said:
Does the MODEM have any effect on GPS reception? Or is that part of CODE? Just curious.
Click to expand...
Click to collapse
because JM7 CODE can use more than 8 satellites and MODEM is the same from JM5 to JM7 , i think that GPS reception is CODE depending and not MODEM.
Just my 2 cents ....
Any more feedbacks ?
i think i will try this trick tonight...

Does this affect WiFi as well? My SGS has pretty poor WiFi reception.

I truely appreciate Doc sharing, using zsjp2, it runs smoothly except gps and wifi weak reception. Just flash jpc modem and gps snaps-in almost instantly, same for wifi. This make the combination of jp2 and jpc my perfect daily use rom
Sent from my GT-I9000 using Tapatalk

Okay, just flashed on top of Samset 1.9F (PDA XWJM5, Phone XXJM3, CSC SERJM1).
All is working fine. No apparent change to GPS yet, every thing else appears to be working. GPS could only see 8 sats at the time, so no idea if lock on greater than 8.
Will report back after I take a small trip this morning.
[UPDATE] Used MyTracks for a couple of three miles trips. Tracks were better. Track lines stayed within the width of the roads on the map even when stuck in bumper to bumper traffic for a couple of minutes. No jack rabbiting all over the place like previously. Could not lock more than 8 Sats despite seeing 12. Sat lock is within 60 seconds each time.
Battery performance was bad. Used to get 25% loss per one hour of GPS use on MyTracks. This time lost 40% for 30 minutes of GPS use.
[UPDATE 2[ I can confirm the battery drain issue. Lost about 15% in ten minutes yesterday with no other apps running and clean boot.

With the JPC Modem I get:
-63 to 65dBm 21 asu
and with a non JPC modem on the same place I get:
-86dBM and I forgot the asu
Is this translating to a better signal reception performance ?

Curious to know how the new modem from JPH compares with JM4 modem (from JM8).
Sent from my GT-I9000 using XDA App

i have a found a bug. using JM8 + jpc modem. If i lost reception i have to reboot the phone to get it back. It seems that the phone cannot register into the network after i lost signal.
Problem gone with JM4 modem.

2.1 modem with 2.2
I am actually using the XXJM4 modem with the JPH ROM, so yes you can use an eclair modem and i find it gives me the best signal, much better than the modem that comes with JPH.

I'm using the JPC Modem File since the JPC Firmware was released
Have about -85 to 95 dBm with JM5 Modem File etc. and with JPC -75 to 85 dBm

Update yor Bell to Froyo With Registery Patch!!!

I was suffering from lack of information before I upgrade to froyo through Kies with reg patch. I was afraid of the modem file that JPO has (850 band concern and compability issues) with Bell Sgs.
I had enough with their lies and delays so I upgraded my JH2 to JPO using the latest Kies with reg patch. Everything went smooth and easy.
Although Kies gave erors saying "upgrade unsuccesful cant connect to phone" (something like that i dont remember exactly) during the upgrade after the phone went to download mode. Basically whay happened was, I was clicking the upgrade button in kies then kies was downloading files and binaries. After that phone restarts with download mode and then installation aborts. If u face with this.problem just foctory reset the phone and try again. Unfortunatelly have tried like 4 times waiting kies download binaries in 15 min each time.
I would like to say to people who is waiting for stupid bell to release froro its been 2 days now and I am running JPO without any problems. 850 band is still here and everything works like its suppose to.
If u would like to upgrade with reg patch I reccommend it. But i have to say Do at ur own risk!!!!

what settings did you use for kies? and by chance do you know what date your phone was made? i think it says it on your battery and on the phone behind the battery

snuff96 said:
what settings did you use for kies? and by chance do you know what date your phone was made? i think it says it on your battery and on the phone behind the battery
Click to expand...
Click to collapse
I used the latest version of patcher. Settings comes with patcher. I used the xeu file in it. I m sorry i m walking now and cant check the date.but will post when i get home

i am looking to do this too, waiting for your reply about the phone date (under the battery, on the phone, mine says 10.08)
Thanks

does your front camera work?

Use doc's 2.2 JPO. ROM.. it works way better then any stock ROM and its safer then the kies REG hack. everything works with this rom.

TriC_101 said:
Use doc's 2.2 JPO. ROM.. it works way better then any stock ROM and its safer then the kies REG hack. everything works with this rom.
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Click to collapse
Agreed. Also I don't know why these threads keep talking about the 850 band. The band is decided by your hardware, and I have never hard the 850 band not work in any ROM. If 850 did not work I would not even have coverage because Bell is only 850.

brunes said:
Agreed. Also I don't know why these threads keep talking about the 850 band. The band is decided by your hardware, and I have never hard the 850 band not work in any ROM. If 850 did not work I would not even have coverage because Bell is only 850.
Click to expand...
Click to collapse
That's a new one on me. Every thread I've seen about Bells frequencies indicate 850 and 1900 wcdma(HSPDA)
Also I thought when the phone shows 3G that's 1900 and when it displays H that's 850?
Of course I'm no tech guy so I'll let someone else dispute it with facts if they have them.

TriC_101 said:
Use doc's 2.2 JPO. ROM.. it works way better then any stock ROM and its safer then the kies REG hack. everything works with this rom.
Click to expand...
Click to collapse
So you're saying the front camera works then?
I'm itchin to flash something.

Videonut said:
So you're saying the front camera works then?
I'm itchin to flash something.
Click to expand...
Click to collapse
ya it works fine on mine.. I use it all the time for video calls with the tango app.

gotta give this a try

brunes said:
Agreed. Also I don't know why these threads keep talking about the 850 band. The band is decided by your hardware, and I have never hard the 850 band not work in any ROM. If 850 did not work I would not even have coverage because Bell is only 850.
Click to expand...
Click to collapse
Losing the 850 Band is definitely real, It's happened to me twice and had to flash back to JH8 and select the BCC CSC.

Nope. It didnt happen to me. I updated via reg patch.

I upgraded with the registry patch yesterday. Worked fine until I tried to root. Screen went white, phone rebooted but not past the animation. Get an "E:Can't mount /dev/block/mmcblk0p1" error when booting into recovery. Looks like the internal SD is fried.
I'm going to bring it in to get repaired when I get home, buy a Desire Z and sell the Galaxy S when I get it back. I have no doubt that any fix will just be temporary.

URGENT!!!!! Vodafone have messed up

On the Vodafone Forum we have just found out that on Vodafones latest update 2.2.1 they have taken off GSM Mode only in the network settings.
This is there latest Rom there version of JS3 not JPY Now the stock JS3 has this feature still on it, they said they did not like JPY to much battery drain, well if your in a area with no 3G and the phone is set to gsm/WCDMA auto then the phone is trying to find a 3G signal and this will drain the battery as the phone is set to use WCDMA as a priority ( Info on this from Samsung Direct) I have told them and they could not believe what they have done and it has slipped through there radar he is emailing various people about this as this is a main spec of the phone i no not many of you guys are on VOD firmware but i thought you may want to no if any one comes on wondering or asking for help on this

Northern.dj said:
On the Vodafone Forum we have just found out that on Vodafones latest update 2.2.1 they have taken off GSM Mode only in the network settings.
This is there latest Rom there version of JS3 not JPY Now the stock JS3 has this feature still on it, they said they did not like JPY to much battery drain, well if your in a area with no 3G and the phone is set to gsm/WCDMA auto then the phone is trying to find a 3G signal and this will drain the battery as the phone is set to use WCDMA as a priority ( Info on this from Samsung Direct) I have told them and they could not believe what they have done and it has slipped through there radar he is emailing various people about this as this is a main spec of the phone i no not many of you guys are on VOD firmware but i thought you may want to no if any one comes on wondering or asking for help on this
Click to expand...
Click to collapse
So glad I got rid of that junk for stock JPY.
Vodafone = Bunch of incompetent ****ers.

Northern.dj said:
On the Vodafone Forum we have just found out that on Vodafones latest update 2.2.1 they have taken off GSM Mode only in the network settings.
This is there latest Rom there version of JS3 not JPY Now the stock JS3 has this feature still on it, they said they did not like JPY to much battery drain, well if your in a area with no 3G and the phone is set to gsm/WCDMA auto then the phone is trying to find a 3G signal and this will drain the battery as the phone is set to use WCDMA as a priority ( Info on this from Samsung Direct) I have told them and they could not believe what they have done and it has slipped through there radar he is emailing various people about this as this is a main spec of the phone i no not many of you guys are on VOD firmware but i thought you may want to no if any one comes on wondering or asking for help on this
Click to expand...
Click to collapse
Js7 is newest rom
Sent from my GT-I9000 using XDA Premium App

colindodds said:
Js7 is newest rom
Sent from my GT-I9000 using XDA Premium App
Click to expand...
Click to collapse
So? Vodafone sit on new ROMs like there's no tomorrow...

Vodafones reply at the moment was
Hi NDJ,
Just to clarify, I've not confirmed we're aware of a problem- I just said we'll take a look at it.
Using 3G doesn't actually make much of a difference at all to battery life compared to using 2G, so I'd always recommend against switching down anyway as you miss out on performance. There's a thread explaining it here.
As soon as we have any more information, we'll let you know
We have proved that 2g uses less battery they have remove a stock android function that is on all android devices

Interesting thread. I had a similar issue on my SGS a while ago when I flashed JS3 PDA with the JP7 (Vodafone) CSC and the JP5 (Vodafone) modem. I lost the 'GSM only' option and thought at that stage that it was a JS3 thing. It turned out that the JS3_JP7_JP5 combination doesn't play well together and when I switched to the JPY CSC the option was back and everything was fine. Try flashing the JPY CSC and see if you get the option back. IIRC, I packaged up JS3 with JPY CSC and JP5 modem and flashed the entire package to get it back, I never tried flashing just the JPY CSC but it may be worth a try! Incidentally, what CSC are they providing with their 2.2.1 ROM?

I don't no i do not its on samsfirmware as a one file firmware Orange users got theres to day and there fine. Most that have the problem are rolling there firmware back via kies why have they used this csc i no they sent jpy back cos they came out with it had massive battery drain. Plus the Vodafone firmware is making the phone hot as well

If it's chewing battery and making the phone hot it deffo sounds like they have the modem working overtime! Well done Vodafone.. top marks for quality control!! Yet another good reason to stick with flashing with Odin as you can have at least some control over what you put on your phone that way!
Personally I'm using the JS7 PDA with JPY CSC and JS1 modem and my phone is running beautifully and giving the best battery life I've ever had!

How are you getting the three files i used to do three files but Samfirmware is using a single file now my las three file was jpo i'm on jpy at the moment i have a XEU handset but i can not get my head round the single fill thing

Northern.dj said:
How are you getting the three files i used to do three files but Samfirmware is using a single file now my las three file was jpo i'm on jpy at the moment i have a XEU handset but i can not get my head round the single fill thing
Click to expand...
Click to collapse
romkitchen is the way to go.
Sent from my GT-I9000 using XDA App

Arrrrr now i get you cheers for that ...
they have now admitted to there mess up
"Hello,
The GSM only option on Galaxy S 2.2.1 has been left out in error and it should be reinstated as part of the next firmware release. As soon as we have information on this, we'll let you know.
Thanks
David"
not very good i think they need to sack the people in there firmware section they have even made a mess of the HTC Magic as well

Northern.dj said:
How are you getting the three files i used to do three files but Samfirmware is using a single file now my las three file was jpo i'm on jpy at the moment i have a XEU handset but i can not get my head round the single fill thing
Click to expand...
Click to collapse
You need to open the tar file from Samfirmware and extract the separate files. Once you have the files you want to mix and match from various versions you tar them back up using the tar command on a linux machine or something like Cygwin on a Windows machine. Ramad put together a good tutorial on how to do this a while ago (sorry, I can't find a link to it right now but you'll find it if you search).

First thing i have done when i see the laggy Vadofone Bootlogo at startup is to get rid off this firmware via odin for good. Now running JS8. Real fast as it should be...

Bell SGS on JS8 with JQ1 modem = success

So I got sick of bad gps, high battery drain, lots of lagging.
I was on official 2.2 JL2.
here's what I did:
- used titanium backup to backup everything
- installed the modified e3 recovery hack to allow unsigned kernels
- installed latest DamianGTO Ultimate Kernel (just a way to get ClockWorkMod) - installed using ODIN
- booted into clockwork to do a factory reset (wipe everything)
- cooked up a custom Doc's rom using all of the latest (hardcore kernel, JL8, JQ1 modem, bell CSC file, etc etc)
- installed the cooked rom via CWM
- boot up, download titanium backup, restore all important apps (good time to purge)
That's it!
GPS has improved 10 fold. Even on first boot, I got a lock within 10 seconds. It used to take 2-5 minutes!
Data and voice quality seem to be the same as before.
I'll report back on battery life, but there's no way it can get worse than it was before.
Just wanted to share, since I could not find ANY conclusive info on what does and doesn't work with Bell phones. So there you go, it works, and its worth it.

vinistois said:
So I got sick of bad gps, high battery drain, lots of lagging.
I was on official 2.2 JL2.
here's what I did:
- used titanium backup to backup everything
- installed the modified e3 recovery hack to allow unsigned kernels
- installed latest DamianGTO Ultimate Kernel (just a way to get ClockWorkMod) - installed using ODIN
- booted into clockwork to do a factory reset (wipe everything)
- cooked up a custom Doc's rom using all of the latest (hardcore kernel, JL8, JQ1 modem, bell CSC file, etc etc)
- installed the cooked rom via CWM
- boot up, download titanium backup, restore all important apps (good time to purge)
That's it!
GPS has improved 10 fold. Even on first boot, I got a lock within 10 seconds. It used to take 2-5 minutes!
Data and voice quality seem to be the same as before.
I'll report back on battery life, but there's no way it can get worse than it was before.
Just wanted to share, since I could not find ANY conclusive info on what does and doesn't work with Bell phones. So there you go, it works, and its worth it.
Click to expand...
Click to collapse
For me it's worse than JPM on CM7, battery got 4%/hour!! (2%/hour on JPM).

wanam said:
For me it's worse than JPM on CM7, battery got 4%/hour!! (2%/hour on JPM).
Click to expand...
Click to collapse
Do you mean JS8 or the JQ1 modem?
For me JS8 battery is worse than JS3 and not really faster.

vinistois said:
Data and voice quality seem to be the same as before.
Click to expand...
Click to collapse
Did you check if you still have 850? Because you probably lost it...
Sent from a phone

I still have 850, no fancy options to tweak, its just working.
GPS accuracy and lock is impressive! on par with any other gps device I have ever used. I love my phone again!
For the first time since it was new I went a full day without charging. Used gps nav lots, streamed a tv show, installed lots of apps and tried them, played some games. (I'm travelling and stuck in an airport - bored!)
The phone is really, really fast.
I have not encountered any issues yet!

vinistois said:
So I got sick of bad gps, high battery drain, lots of lagging.
I was on official 2.2 JL2.
here's what I did:
- used titanium backup to backup everything
- installed the modified e3 recovery hack to allow unsigned kernels
- installed latest DamianGTO Ultimate Kernel (just a way to get ClockWorkMod) - installed using ODIN
- booted into clockwork to do a factory reset (wipe everything)
- cooked up a custom Doc's rom using all of the latest (hardcore kernel, JL8, JQ1 modem, bell CSC file, etc etc)
- installed the cooked rom via CWM
- boot up, download titanium backup, restore all important apps (good time to purge)
That's it!
GPS has improved 10 fold. Even on first boot, I got a lock within 10 seconds. It used to take 2-5 minutes!
Data and voice quality seem to be the same as before.
I'll report back on battery life, but there's no way it can get worse than it was before.
Just wanted to share, since I could not find ANY conclusive info on what does and doesn't work with Bell phones. So there you go, it works, and its worth it.
Click to expand...
Click to collapse
Is this your first custom ROM?

So this JQ1 modem has our precious 850 band?
Looking forward to hearing more about it.

When i try JQ1 with Doc Rom, i lose my 850mhz band which means no data

Negative here on getting it so easily. Made an update.zip at Rom Kitchen with JQ1 and installed.
Usually I get mostly 850 here at work, now nothing but the 1900. Smother the phone with my hands to get it to go down from 3 bars to 1 and still no 850. Back to JL2 for now.
Check yours with *#0011# in dialer to confirm 850.

I cooked up doc's rom with the OP's recommended settings and can confirm that 850mhz wcdma does work.
maybe its related to the CSC file ? make sure you select BMC when cooking that rom.

BottleB said:
When i try JQ1 with Doc Rom, i lose my 850mhz band which means no data
Click to expand...
Click to collapse
I got data when I had JQ1 installed for a few minutes. 949/2240 on a speed test, pretty typical for a 'non-dead' time around here, I think the phone mostly uses 1900 when I'm in this office downtown office tower anyways.

I have BMC CSC. Maybe I'll try it again when I'm at home.
Might like to get a new modem working as I think reception was better with Eclair JH2 (used to get reception in work and home elevators all the way). Of course back then I had a different motherboard inside the phone too...

Franky i have had no issues JL2 since i flashed Doc's ROM. Phone and data are excellent but then again i really didn't test much before that i had Darky 8.1 and everything was normal then to.
On Darky GPS was slow took a minute or so since it was EU modem. JL2 locks in about 30 seconds whenever i turn it on, I just did it in front of my desk in the house and it locked in about 40 seconds.
I will say this whenever i flash a ROM even if using the same modem i sometimes can't get it to lock at all even after 10 minutes it will not lock. The way to fix it is to clear the GPS Data using SGS Tools > Secret Codes > GPS - Test and Setting > Delete GPS Data > close GPS >Start it Again > Get Position TESt
I just clear the Data 2 -3 turn off GPS, reboot the phone > turn on GPS and do a test that way you get the most accurate results from a cold boot. This is part of my regular steps to do after flashing a ROM weather it helps or not it has never failed me once.

yeah not sure why some of you are not getting 850, or why you would have no data.
Is it maybe area specific?
Maybe if you are in an area that has no 850 coverage it will not show?
I installed in Toronto, it worked, I flew to Vancouver, it still works...

vinistois said:
yeah not sure why some of you are not getting 850, or why you would have no data.
Is it maybe area specific?
Maybe if you are in an area that has no 850 coverage it will not show?
I installed in Toronto, it worked, I flew to Vancouver, it still works...
Click to expand...
Click to collapse
I second that..I'm in Toronto and have flashed every kind of modem you could think of and data was never an issue. I did end up with only 1900 sometimes but there is a way to go into your phone and set it to 850 just can't remember the code......its in xda somewhere
Sent from my GT-I9000 using Tapatalk

markywylder said:
I second that..I'm in Toronto and have flashed every kind of modem you could think of and data was never an issue. I did end up with only 1900 sometimes but there is a way to go into your phone and set it to 850 just can't remember the code......its in xda somewhere
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
Same here, never had an issue with data in Toronto

I've also found a way to fix the GPS, using the romKitchen (romkitchen.org if you want to find it) I was able to build a custom rom that worked very well with the GPS, I'm actually testing battery life today after a full charge. I used the XWJS8 base rom, with the hardcore kernel and the jl2 modem with the CSC as BMC..

Setting or checking 850 Band
Hi Guys,
There are a few ways you can set the 850 band; Secret codes, SGS tools, SGS Info etc.
The fastest app is SGS Tools; open this app and select the first option of Secret Codes, then scroll down to "Band Selection" if you select this it should bring you right into the Band Selection menu.
You now need to select [2] WCDMA BAND[*], it should then bring you to the next screen where you need to select [1] WCDMA ALL and then press Select WCDMA ALL BANDS[*].
Back out of the menu and then go back into it. Now select [2] WCDMA BAND[*] and you should see a[*] beside the 2100 / 1900 and 850 bands.
I hope this helps
Cyth

vinistois said:
So I got sick of bad gps, high battery drain, lots of lagging.
I'll report back on battery life, but there's no way it can get worse than it was before.
Just wanted to share, since I could not find ANY conclusive info on what does and doesn't work with Bell phones. So there you go, it works, and its worth it.
Click to expand...
Click to collapse
We're still waiting for more details on battery life. What kind of drain are you seeing over the day and overnight?

cytherean said:
Hi Guys,
There are a few ways you can set the 850 band; Secret codes, SGS tools, SGS Info etc.
The fastest app is SGS Tools; open this app and select the first option of Secret Codes, then scroll down to "Band Selection" if you select this it should bring you right into the Band Selection menu.
You now need to select [2] WCDMA BAND[*], it should then bring you to the next screen where you need to select [1] WCDMA ALL and then press Select WCDMA ALL BANDS[*].
Back out of the menu and then go back into it. Now select [2] WCDMA BAND[*] and you should see a[*] beside the 2100 / 1900 and 850 bands.
I hope this helps
Cyth
Click to expand...
Click to collapse
You'll also have to disable all the others in order to have the 850
That's probably why most rom won't work "out of the box", as they have 900 enabled instead of 850

Possible fix for data stalling issues some of us are having.

Right, a little back story.
I brought my SGS2 at the start of May in the UK on O2 so I have an early model which came with the firmware before KE1. I rooted in the first week and was flashing Villainrom 1.0 before too long with no data problems.
I think it was around KE2 with Lite'ning rom that I first saw my phone constantly switching between H & 3G and stalling when receiving or sending data. This behaviour has continued through all the firmwares I've tried with many different modems. I moved onto to Cognition when it was v1.01 and have been using it all the way unto 1.2 with the KG3 modem. Again still with data connecting problems.
Things I have tried -
Turning off fast dormacy
Editing the build.prop http://forum.xda-developers.com/showthread.php?t=1097612&highlight=build.prop pages 1-5
Switching off HSDPA/HSUPA via the *#301279# command
Disabling juice defender
Switching to WCDMA only
Changing modems
Full hard reset and reflasing of roms
Even with the above on multiple roms and rom versions my data connection was unreliable at best and killing spree warranting at its worst.
Possible fix-
What i found lurking on XDA on a slow day at work was the command below
*#2263#
This allows you to select which bands your phone uses. I selected option 2 then tested the 4 available bands. They all resulted in a complete loss of reception except WCDMA 2100. this is probably network specific you'll need to try it yourselves.
The results and current settings
Now when I try to use my data connection the phone no longer switches between H & 3G. It will start on 3G then find H and stay there, I see a slight delay if its been in deep sleep or JD has cut the connect but this is normal for the phone to start on 3G to save power.
Fast dormacy - off
build.prop -stock/unedited (I found this worked for me for a while but since 2.3.4 it didnt seem to help)
HSDPA/HSUPA via the *#301279# command - both on
Juice defender - on
WCDMA only selected as when picking a band it doesn't seem to like having a GSM band selected as well (happy to be corrected on that)
Modem KG3 -
Rom cog 1.2 - I'm patiently waiting 1.4 based on KG6 to test my findings.
Conclusion-
Okay it could be that selecting a band does F'all and that I'm seeing better results for a completely different reason. I'm not a developer so my fixing skills amount to playing with stuff I don't fully understand and seeing how more or less broke I've made it.
After thought -
Ive seen on the sensation forum they have discussed the wrong IMEI code being the cause of poor data speeds so I may look into that next.
Please share your experiences and anything else you've tried.

Ive seen on the sensation forum they have discussed the wrong IMEI code being the cause of poor data speeds so I may look into that next.
That should be no connection as IMEI belongs to phone and handshakes with network first .
KG6 modem some report as better .
jje

I will have to give this a try and see how it works, thanks for the share.

I am in the same boat, it is VERY frustrating to say the least. A typical scenario for me is: reading a web page on my S2 for a good few minutes (3g has gone to sleep mode by the time I have finished reading), I click on a link, 3g flashes, H comes up and flashes once.....wait.....wait.......wait......10 seconds later it decides to initiate a connection and take me where I want to go! It does the same thing with the XDA app. I have been onto O2 about this a couple of weeks ago, all they did was give me the settings over the phone (which were the exact same ones I already had) and they also sent me a replacement sim card, suffice to say, there is no change. Now I am convinced its a network problem of some sort, I have a three sim card which I have been trying out and the above problems do not exist anymore when using three, I click a link after 3g has gone to sleep and it goes from 3g to H and initialises the data transfer in one smooth motion. It looks like I'll be getting my PAC code and moving to Three!

would be interested to hear if switching to the 2100 band helps at all seeing as your on O2 as well

Mine is O2 via Giffgaff and no problems at all .
Tested KG6 modem Wi|Fi only and it is a stronger signal .
jje

Yeah, forgot to mention that, I have just enabled it. I can't test at the moment though coz there is no 3G coverage where I am. The only problem with enabling it is you will not be able to connect to GPRS or Edge if you need to. But it is worth testing regardless.

Just been out and about and tried that setting, didn't make much difference unfortunately

Maybe it was a combination of tweaks on my end. What rom & modem are you using?

bentez2003 said:
Maybe it was a combination of tweaks on my end. What rom & modem are you using?
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Villain 2.3 with KG3 modem. The problem has been the same whatever ROM I have used, I even flashed back to O2 stock a couple of weeks ago to see if it was a ROM problem, but that was the same. I can't remember what it was like when I first got the handset though, mine was the first batch as well.

JJEgan said:
Mine is O2 via Giffgaff and no problems at all .
Tested KG6 modem Wi|Fi only and it is a stronger signal .
jje
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The wife is on Giffgaff so I think I'll give that sim a try before I get my PAC off O2.

bentez2003 said:
Right, a little back story.
What i found lurking on XDA on a slow day at work was the command below
*#2263#
This allows you to select which bands your phone uses. I selected option 2 then tested the 4 available bands. They all resulted in a complete loss of reception except WCDMA 2100. this is probably network specific you'll need to try it yourselves.
.
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hi
i am just testing now this fix. i have an o2 phone and i did the same changes you did, disable fast dormancy, changed build.prop settings, will let you know after going a few times underground ;-)
gabrio

confirm, this is working, even when i go underground or when the signal goes away, it gets back to H/H+ and works, gabrio

Give it a little while, I think you'll be back saying it didn't work
Personally, I went ahead with my threat and moved over to 3uk, never looked back since with this problem, been perfect!

I've tried it all. Disabled fast dormancy, hspa, toyed with band selection, edited build.prop (btw, don't bother with it, the network settings you find on the web to type in don't work on the s2) you name it - but it would still cut out. Luckily, my phone is unlocked so I switched my provider and now it works like a charm with all the bells and whistles enabled. I can ride the tram all across warsaw and maybe have a handful of 2-3 second hiccups when I'm listening to online radio. Curiously enough, on my previous provider I've noted that there are some areas (like a busy mall - Arkadia) where it would not stall as well as a few other places, and most other areas that were notorious with data hanging. I'm convinced now that it is an issue on the telco side (*cough*Orange*cough*), and too bad because I was on a prepaid plan with them that for roughly $30 I had 7GB of transfer. I guess they figured they can promise the world on their trash network, because nobody would actually use it up. YMMV.

Had this issue with a UK GS2 purchased from Negri using it on AT&T.
Since upgrading to the latest UK firmware with 2.3.4 I have not had the issue going on about 2 weeks now!
Man was that issue annoying. Had to restart the phone sometimes to get data back.
Joe

Ok I did that too though how abt lag? Phone lags a bit opening large sms conversations and browsing home screens.. But peace. Yours too?
Gabrio
Sent from my GT-I9100 using XDA App