yashsingh1/xdaforums huggingface dataset:
[Defy Q&A, Help & Troubleshooting] Kyle07:
Nice to see some fellow South Africans on XDA!

I've had this issue ever since I switched to CM7 in October last year. I just assumed my carrier was the issue (Cell C - Notoriously useless in my area).

I'm still using CM7.2 as my primary ROM but I have the same issue on CM9 using Multiboot. It's not good news that this could be an issue with the ROMs because

I love these CM builds and don't want to switch to another ROM...

Here are my settings:

Type of service provider: Normal and sometimes virtual (depends on where I am)

Cell reception area: Average

Data type problematic: All types

Access Point Names - APN: internet

Proxy: blank

Let's hope this thread leads to a resolution!

Thanks to the OP
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Hi Kyle07

Thanks for your input. Yes, South Africans are far and few between here on XDA :)

The data problem is seriously random. I have noticed that many users don't actually use mobile data, only wifi, so the problem might very well be far greater than we know. I have confidence that the devs will fix the problem though. Already the latest CM9 builds are much better for me than a few weeks ago. There have been a few changes relating to data and I'm sure they all contribute to solve the problem. Bad reception definitely makes it worse.

I use CM9 as my primary rom and find it very difficult to go back to GB or Froyo based roms. For now, the market app "Connectivity Checker" does a great job of restoring data when it drops out.
[Defy Q&A, Help & Troubleshooting] scottdanpor:
I have an unlimited data plan and have had no issues so far with 3g connectivity. I never switch between 2g or 3g, just use 3g all the time.

I switch back and forth between FuZZ and Quarx (CM9), using Quarx June 9th build.

I would say I use hundreds of MB a month, don't really watch it close but I do use an app that tells me how much I used.

Defy BAYER model

Provider: Virgin Mobile Canada/Normal

Cell Reception: Good

Baseband EPU93_U_00.60.00

America

USA

T-Mobile 3.4.2-107-4

I also use juice defender to toggle 3g and save battery when the screen is off.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Thanks for the feedback scottdanpor. Do you have juice defender to disconnect data when the screen is off or toggle to 2G?
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
Hi there!

In the last Quarxs 0906 and FuZZ 1206 data still looks the same... disconects happens.

I'm noticing that the times between downs sometimes increase... Before used to happens every few minuts and now it's happening some times after 2 even 3 hours of stable connection, normaly it goes down hourly.

Regards!
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I can confirm this too... only had one dropout on FuZZ+ 1206 today. Hopefully we're getting closer to perfection.
[Defy Q&A, Help & Troubleshooting] scottdanpor:
It toggles data on and off. Checks every 15 min on 3g, then toggles data off again.
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
That's what i was doing to workaround this problem... but it looks like Juice made my defy reboots randonly... it stoped since i disabled Juice... now i was using ConnectionChecker to do the trick...
[Defy Q&A, Help & Troubleshooting] scottdanpor:
I never had the reboot problem. I will disable juice defender and see if I have any connection issues.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Thanks... but that probably doesn't count as data needs to be connected for a few hours before it dies. When it bombs, a data toggle fixes it :)
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Great. Thanks!
[Defy Q&A, Help & Troubleshooting] scottdanpor:
I will now eat my words. :p

Just ran into the problem. Phone appeared to be connected but no internet access when using Dolphin. I'd say between 3 and 4 hrs it disconnected. Well, I guess juice defender conveniently corrected the problem for me all along. :o
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
Juice mascarade the problem...

But I was wrong too its not getting better... Look in the screen shot how often it happens...
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Beware of connectivity checker on edge. I've seen it toggle airplane mode when data was working, just slow.
[Defy Q&A, Help & Troubleshooting] dafi81:
Maybe this helps I use drei Austria. Drei has it's own 3G network but uses the 2G network from A1. I have exactly one time data connection when start the phone. So the error occurs everytime the connection changes from virtual to normal.

MB526

Baseband-Version: EPU93_U_00.60.00

Kernel: 2.6.32.9

Name: Drei A

APN: drei.at

Server:mobile.drei.at
[Defy Q&A, Help & Troubleshooting] FrogFrog:
I am using "BOB" in Austria , and they are using virtual mode from A1.

What I didn't unterstand is, when I use the connection checker and it lost the network connection, the telephone toggles to the airplane mode, BUT I have to enter the SIM pin, otherwise I am completly offline (telephone calls & network).

I was just thinking, the "connection checker" only reconnets the network?
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
Yes I have noticed that too few times..but I get the same behavior in logcat, so I don't think it's the case.... Maybe just a bad day to my network indeed...
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I don't use any PIN but I suppose if you disconnect from the network and reconnect, which is what happens when airplane mode is set on and off again, you would have to enter your PIN again if its enabled, as you are re-registering on the network. Maybe you can remove your SIM PIN and use a lockscreen PIN instead?

Remember that only the data portion is not active when flight mode is toggled, GSM is still connected.
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
Guys;

My phone is not getting deep sleep for some reason, and since this happens my data don't disconnected even one time...

Today it was running for 4 hours rock stable... that's a world record to my defy with CM9...

Based on this, i'm pretty sure that connection problem has direct relation with deep sleep mode...

Maybe is there any way to comprove this with other users... could be a light to our problem!

Regards
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
That's very interesting. Which build are you on?

I've been on Epsylon3 130612+ build all day and have had no dropouts so far. I've seen the indicators go grey but then restore to blue within seconds.
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
I'm in FuZZ 1206...

Now i have changed governor from "ondemand" to "boosted" and SIO, and now it's getting to deep sleep again... i'll keep monitoring to see how data behaves...
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
There it is... as soon as my defy come back deep sleeping, the data problem returns... 40 minuts and the connection is dead... :(

I'll try "Wake my Android Pro" to see if i get better results....
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I'm very happy to report that I've not yet had a data disconnect on Epsylon3's 130612+ build when using only 2G or only 3G.

I've disabled Connectivity Checker for now, as the quality of the Edge network I'm connected to is too slow, and it thinks the data connection is down at times. I've noticed on the odd occasion that the signal indicator goes grey, but soon goes back to blue again (normal behaviour).

So in my case, only the 2G/3G auto mode is still suspect. This was the case about a month ago too, but then we went through a bad batch of builds causing even 2G only and 3G only to disconnect.

Please let me know if this is the case for others with the problem :)

EDIT: False alarm... about 25 seconds after posting I had a disconnect on 2G only :(
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I see maniac103 is working on our bug on CM7

This should flow to CM9 too if it works :D
[Defy Q&A, Help & Troubleshooting] diogolm.adm:
Woww... this guys are great!

I believe soon or later they will be able to fix that!

Thanks in advance!
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I'm back on maniacs latest cm7 build to test connectivity, perfect do far :)

Sent from my MB525
[Defy Q&A, Help & Troubleshooting] Viva_SA:
I assume the build you're testing is cm-7-20120616-UNOFFICIAL-jordan-signed.zip

Does this mean the connectivity bug fix is not included in the freshly-released CM7.2 Stable build? I'd also like to test this fix out.

Sidenote: my data connection issues (on CM7.2 (20120610 Nightly)) continued with my MTN sim in the phone, and vanished the instant I switched to a Cell C simcard. So this bug really also seems to be network dependant.
[Defy Q&A, Help & Troubleshooting] Viva_SA:
ktmbikerman, what is your conclusion with regards to Maniac's latest build? Have you had more disconnects?

I've first tested CM7.2 Stable - when in 3G+2G mode, data seemed pretty stable, but I had one disconnection. In 2G-only mode, disconnects occurred more often, maybe once every 30 minutes. I tested this ROM for about 6 hours.

I then moved to Maniac's 20120616 Unofficial build. Unfortunately, I experienced some disconnects in both 3G+2G mode as well as in 2G-only mode on this ROM too.

So to sum up, I think Maniac is making progress (it seems better than before), but is still not completely fixed. Thanks for your effort and time Maniac103.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Howzit Viva_SA

Thanks for your feedback. I'm migrating my wife's Defy to Vodacom shortly, so I'll be able to see how well it works on that network.

I've used maniac's 120615 build now for the weekend and I only had data disconnects in areas where GSM coverage was a bit dodgy. I managed to capture 3 disconnects on logcat and hopefully maniac can analyse this when he's back from his holiday.

I've just downloaded the stable 7.2 build now and am about to install it.

Unfortunately my Telkom line and ADSL is down at home, so I was limited to a dodgy edge connection for the weekend. Hopefully Telkom will be repairing my line soon, it's been a week now :mad:
[Defy Q&A, Help & Troubleshooting] binghua004:
Mark！

This problem troubles me for a long time.:mad:

Hope it will be fixed perfectly in the near future!:D

CM9-NIGHTLY-120617-Defy.zip,3G only mode,no problem!

PS:

From MIUI forum，It seems to be repaired on the last version of XIUI.To be test!
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I'm becoming more and more convinced that the disconnect bug happens when switching between different generations of networks.

My service provider is Red Bull Mobile, which is a Mobile Virtual Network that piggybacks off Cell C. Cell C in turn, has a roaming agreement with Vodacom, so I can force my phone to only work on the Vodacom network. I believe the Vodacom Network is a newer generation than the Cell C 2G network. Since forcing my phone to work on Vodacom 2G, I've had no disconnects. If I let my phone auto select network and 2G/3G, I get disconnects all the time, which would explain why I sometimes get disconnects when using only 2G but allowing auto network selection.

Unfortunately the roaming agreement between Cell C and Vodacom only allows me to use the 2G Vodacom Network, so now and then I switch back to Cell C to access the 3G network. Whenever I do this, I have to manually restart data by toggling it off and on.

This would also explain why some users are plagued by this problem and others are oblivious.

I'll keep testing, but if anyone can confirm or disprove this I would be grateful.

PS. I've applied for a new contract for my wife (which comes with a defy+) on the Vodacom Network, so if that works without a problem it would also prove this.
[Defy Q&A, Help & Troubleshooting] steveeJ:
i'm using epsylon's

CM9-NIGHTLY-120613-Defy+.zip

in germany with a provider called simply, which uses the o2 network.

and i must say, this is a catastrophy.

3g is not working at all, and 2g holds the connection not longer than 30 minutes.

the worst, calling is cut off too :/

is there any cm9-build for defy+ without this bug?
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Your problem sounds more severe than what most of us are experiencing. Are you sure you're on the right baseband?

System Settings > Advanced > Baseband Selection
[Defy Q&A, Help & Troubleshooting] steveeJ:
Europe

Central Europe

3.4.2-145

isnt' this correct for germany?
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Looks correct although it might be worth trying some others. Does my post just above your first post here not have any baring on your problem?
[Defy Q&A, Help & Troubleshooting] toxic10:
Type of service provider: normal (i don`t know what normal or virtual means)

Cell reception area: good

Data type problematic: all

Access Point Names - APN: broadband

Proxy: blank
[Defy Q&A, Help & Troubleshooting] steveeJ:
It's impossible that it has something to do with switching cells,

since i was in the office and the phone was laying on my desk.

what i could imagine is, that it has something to do with sleep mode.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Your phone switches cells based on cell load too, so its very possible that it can switch while lying on your desk.

I didn't have a single disconnect today forcing my phone to work on Vodacom 2g.

I've also seen the disconnect happening while using the phone, so it definitely wasn't sleeping :)

Sent from my MB525
[Defy Q&A, Help & Troubleshooting] nameite:
the 0613 nightly is terrible, connection drops every hour.

Tried the 0617 nightly and did not have a data drop yet, been using it since yesterday.
[Defy Q&A, Help & Troubleshooting] v4lkyrie:
Type of service provider: Normal

Cell reception area: Good

Data type problematic: All types

Access Point Names - APN: internet.wind

Proxy: blank

My Defy lose connection when i leave it inactive for sometimes and i have to switch on/off plane mode to reactivate it. Could be the problem related to power management system?
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
A temporary fix

OK, I've been able to pin down with a very high degree of certainty what causes my data disconnects.

I've been using the latest FuZZ and Epsylon3 builds to do my tests, they both are pretty much the same (froyo kernel)

A disconnect happens 100% of the time when the phone is switched or switches itself from Vodacom 2G, a network I'm able to roam on, and Cell C 3G, the network my service provider Red Bull Mobile piggybacks on.

This can be tested my forcing the phone onto Vodacom 2G then selecting 3G only, which makes the phone switch back to Cell C as I'm not allowed to use the Vodacom 3G network. Every time this is done, data has to be enable manually by toggling data off/on.

My phone was running for two days without a single disconnect on Vodacom 2G only. At midday today I decided to switch it back to Auto Network Selection and Auto 2G/3G selection, and within 10 minutes saw my first disconnect when the phone switched itself from Vodacom 2G to Cell C 3G, the same behaviour as when the switch is forced.

So... for me to enjoy bug free data, I'll keep the phone on Vodacom 2G and force it to 3G and toggle data when needed.

Hope this helps those of you who have the same network scenario.
[Defy Q&A, Help & Troubleshooting] dafi81:
exactly the same only A1 for 2G and Drei for 3 G
[Defy Q&A, Help & Troubleshooting] harp_666:
Thanks nameite, I had tried the following, all had data disconnects:

cm9-20120616.1537-SKANK-Defy

WIUI_v4_Defy_2_6_8

WIUI_v4_Defy_2_6_15

But with CM9-NIGHTLY-120613-Defy it was terrible, data will disconnect within a few mins after the screen slept.

Just flashed CM9-NIGHTLY-120617-Defy, its been just an hour and its already looking great. Yet to install connectivity checker to get accurate results, will post results soon.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Hello nameite, how's your connectivity doing? Still no disconnects? Would you mind sharing which network you're on and if you have 2g/3g or only 2g or 3g selected?
[Defy Q&A, Help & Troubleshooting] harp_666:
Had only one disconnect yesterday. No disconnects today...

[edit] It started disconnecting after 2 days... Sorry, I should've waited :(
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Could you share your 2G/3G and Network Selection settings please?
[Defy Q&A, Help & Troubleshooting] harp_666:
Type of service provider: Normal maybe, not sure hw to determine, my carrier is vodafone in india

Cell reception area: Good

Only EDGE, no 3g

Access Point Names - APN: www

Proxy: Blank
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
My guess is the "Edge only" is the key to your good connectivity
[Defy Q&A, Help & Troubleshooting] harp_666:
Maybe, bt i've seen tremendous improvement from 613 to 617. Not a single disconnect yet today. Dont plan on switching to 3g yet, its a bit too expensive for me. Best of luck guys...
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Yes, things have improved, but I think we're back to where we were on around 22 May :)

As mentioned previously, there are a number of layers of this problem, we'll keep hacking away at it, one layer at a time.
[Defy Q&A, Help & Troubleshooting] ibtihaaz:
guys i dont know if i am having the same problem as yours, but i will post this still...

motodefy on cm7 ... using 3uk sim...

whenever i do a call, after some time the dialer freeze !!!press endcall it keeps working/ wont be able to receive call either

data connection .. able to use for 2, 3mins but that hangs also ... i have to reboot...

i've tested on VECTONE network also .. same prob with call and data

i've tested orange and t-mobile .. but they seem to work fine ... i mean i received call from other mobile.. beeen able to talk for 5+ mins .. and been abale receive calls again after... but wouldnt be able to do this if i am using the 3uk sim or vectone sim...

I've just changed to whiterabbit rom this morning but its the same prob

SO IS THIS THE PROB WE ARE TALKING HERE ???
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I'm afraid not... the problem discussed here is only random data disconnects... the GSM portion works fine. Sounds like it could be the wrong baseband you're using.
[Defy Q&A, Help & Troubleshooting] ibtihaaz:
ok... so u mean am using the wrong baseband selection or the wrong baseband version....

I've tried to change the baseband selection all of em but with no luck .. but if u tell me i can change the baseband version then that i can give that a try too .. please do advise me... i need full guidance from someone who understand all of this stuff

Thanks
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
I mean the baseband selection... I suggest you research what frequencies your home network uses and try basebands with the same frequencies.
[Defy Q&A, Help & Troubleshooting] Hans Olo:
E-Plus Germany and T-mobile Germany as well

APN: internet

Proxy: -

APN-Typ: default, suppl, mms

Baseband: EPU93_U_00.59.01

ICS: IMM76I 4.0.4 AOKP (latest build)

I have this problem with CM7 and of course with Miui(2.4.6) too.

Most stable when i use 2G, but there also disconnects (around every 1 1/2 hour)

Tried recommend Baseband of this thread (according to Germany) didn´t change anything.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Hello Hans

You can try manually selecting the main network: System Settings > More > Mobile Networks > Network Operators > Search Networks... then select the main carrier. It might take quite a few tries before you see the available network list.
[Defy Q&A, Help & Troubleshooting] Viva_SA:
Well that is really bad news as I was planning on working around this issue by switching to MIUI. I'm starting to consider the possibility of a hardware issue with a bunch of these defy's, as it looks like there are no working Roms around. This sucks :(
[Defy Q&A, Help & Troubleshooting] royale1223:
BSNL India

I'm experiencing the same bug in all custom ROMs. The frequency of disconnects vary a lot from day to day.

BSNL India

APN:bsnlnet

APN type:default,supl

I think this bug might be related to the fact that Motorola uses non-standard RIL, which partially implemented on AP side. Read more here.
[Defy Q&A, Help & Troubleshooting] harp_666:
Sorry guys, I had data disconnects today, frequently, almost hourly... I finally believe in the "newly-flashed-roms-work-for-a-day" theory... Man, I was so happy that it was all over :(
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Bummer... I must say my connection has been 100% since selecting only 2g and forcing network to Vodacom only, in other words no auto switching whatsoever.
[Defy Q&A, Help & Troubleshooting] pg0512:
gprs disconnect in motorola defy

[Q]

hey guys pls help me on this prob,i have a moto defy and d prob is i install cm9 ics 4.0.4 stable os.when my screen sleep, my gprs or internet is always disconnect pls help me out os this issue........
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
major RIL commit pushed to cm_ics at android_frameworks_base yesterday by Epsylon3, lets hope this does something with our connectivity issues.

This was done after yesterday's Epsy build that everyone has reboot and stability issues with, by the way.
[Defy Q&A, Help & Troubleshooting] royale1223:
Another commit by maniac103 merged. see https://github.com/tpruvot/android_frameworks_base/commit/4a168a39b9a8ec323f4f09718ef497f6f6d526c7
[Defy Q&A, Help & Troubleshooting] jasom77:
Hi ktmbikerman, is there any news about the problem of data in latest roms?
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Hello jasom77... unfortunately no good news from my quick test, which basically consists of switching between networks and seeing if data restores automatically, which it doesn't

I tried the latest Epsylon3 build, the latest Quarx + build and the latest FuZZ + build.

As mentioned before, I believe there are numerous levels to this problem, so it's probably worth trying these builds yourself.
[Defy Q&A, Help & Troubleshooting] yours3lf:
Has cm7 rc3 the same problem?
[Defy Q&A, Help & Troubleshooting] jasom77:
There are some disconnects, but less than in CM9. 1 or 2 every day, even someday is not disconnecting.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
testing Epsylon3 270612 version now...
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Epsylon3 270612 has been perfect for me so far... no data dropouts so far! Could this problem possibly be fixed?
[Defy Q&A, Help & Troubleshooting] ktxda1988:
Using Quarx latest build, GSM/WCDMA (WCDMA preferred).

Did NOT experience connection lost before. I switched to another telecom company last night (another SIM card), no other things changed, connection keep losing around once per hour.

My conclusion is:

Problem related to the 2g/3g/cellstation switching during deep sleep. AND different telecom companies have different infrastructures and different switching policies. Thus, different users experience different scenarios.

I am trying to lock the phone to 3G only and see if the problem remains.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
If problems persist, I suggest giving Epsylon3's 2706 build a try.
[Defy Q&A, Help & Troubleshooting] ktxda1988:
Actually I used Epsylon's builds before, also NO connection problems. Recently I use only Quarx's build for various reasons.

According to the posts from others, I think both developers have not yet fixed this issue successfully. Since the problem is telecom vendor dependent, it's really difficult for them to test different scenarios with different vendors.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
That's interesting... I've had connectivity issues with all builds, but what gives me hope are the recent RIL commits which have been implemented in the latest Epsylon build.
[Defy Q&A, Help & Troubleshooting] ktxda1988:
That's why I said the problem is not related to which builds; if you DO NOT have problem, both builds work; if you DO have problem, both builds fail. All builds (I mean the existing) did not handle the matter completely. Maybe the new commits work... hope so.
[Defy Q&A, Help & Troubleshooting] ktmbikerman:
Time will tell... I'm on 20 hours without dropouts.