Hi all,
I'm having a data connectivity issue on my phone when moving from 2G to 3G. If I'm connected to 2G, then move into an area of 3G coverage the phone will successfully migrate to the 3G network, however the data connection will often not start up for between 30 minutes and severanl hours. Flipping airplane mode will *sometimes* fix it, but more frequently, even rebooting the phone won't work. However, if I lock the phone to 3G from the settings, I do not encounter this issue at all. It only happens on my home provider (Jersey Telecom - they're small). In the UK, on Three, it didn't happen.
So, given that the problem can persist over reboots, and doesn't happen in the UK, it makes me think it's more likely a network issue, so I called them up. The network engineer managed to reproduce the issue on his colleagues Samsung Galaxy Note, but they are adamant that it's a phone issue and not a network issue, and is a matter of Samsung not sticking to the specs. The phone isn't currently rooted, but I can root it if it will help me debug the problem. From the sounds of it, it may be problem consistent to all Samsung radio phones on our network.. and I really don't want to switch to another phone.
They say that from their logs, the phone is not always trying to create (or presumably, migrate?) a PDP when moving to a 3G network. It's hard to say whether it's a problem with the phone or their logs.. has anyone else experienced a similar issue? Does anyone know how to access logs about the phone trying to create a PDP etc. so that I have something to compare with theirs?
Thanks
check out the modems thread and try a better modem
Sent from my checkrom jellybean powered sgs 3
Related
I have had 2 different vibrants now and they both have done the same thing. I haven't been able to isolate the problem to any one thing so I ask if there is anyone else experiencing the same problem. My network connection just freezes. I can't call or text and I have no data. If I try to make a call, it freezes on dialing and the only way to get it back is reboot. This is happening about twice a day and is really a pain. The only way I know it has happened is by trying to make a call and it freezes. I don't know how long it has been that way and when people try to call me, it goes straight to vmail. I put a new SIM card in thinking that was the problem, but it didn't help. I have searched everywhere trying to find a fix. TMO CSR was absolutely no help at all. Shocking.
BTW I am in an area with no 3G coverage. I am on EDGE all the time.
splayer7 said:
I have had 2 different vibrants now and they both have done the same thing. I haven't been able to isolate the problem to any one thing so I ask if there is anyone else experiencing the same problem. My network connection just freezes. I can't call or text and I have no data. If I try to make a call, it freezes on dialing and the only way to get it back is reboot. This is happening about twice a day and is really a pain. The only way I know it has happened is by trying to make a call and it freezes. I don't know how long it has been that way and when people try to call me, it goes straight to vmail. I put a new SIM card in thinking that was the problem, but it didn't help. I have searched everywhere trying to find a fix. TMO CSR was absolutely no help at all. Shocking.
BTW I am in an area with no 3G coverage. I am on EDGE all the time.
Click to expand...
Click to collapse
Since you have had the problem now with two different phones it could be a result of some app(s) you have installed, or related to your coverage. Did thr problem start after having each phone for some time?
I am working on ruling out an app. Weird thing is, I have had winmo for over 3 years in the same area with no probs. This is my first android. I am uninstalling an app at a time to figure out if it is one.
****Update****
So I uninstalled the ESPN Scorecenter app. I haven't had a freeze in over 24 hrs. Guess I am going to have to find another app to follow the games while I am at church.
are you sure u r in area that has only Edge? have u try to Lagfix the fone?
goodluck.
This just happened to my wife's Vibrant. This reminds me of when I had the T-mobile Shadow, where suddenly, it would not be able to send or receive data or calls BUT the phone itself shows no indications of any signal problems. It's as if the cellular software component has frozen and so the signal bars are frozen to whatever state they were and thus tricking you into thinking everything is fine until you try to make a call or someone calls you on a landline wondering if your cell phone is dead.
I suspect it's due moving into a poor or zero signal area and the phone tries to make a data connection. I really have no idea how to fix this other than to hope there is a firmware update to resolve this. The only fix is to reboot the phone (flipping the phone to flight mode gets one to a state where you can't turn flight mode off... which indicates a lost of control to the cellular component).
I am consider finding a way to reboot the phone nightly, which will help if this happens overnight, but I wish there was a way to detect this more immediately so it can reboot when needed. Perhaps an app that monitors the carrier signal strength and if the signal level is perfectly the same for a long duration, then a lock up of the cellular component is suspected.
Hi guys. Me and my wife both have gs2 and we both are on tata docomo 3G network. The speeds are good and this phone is awesome, specially for someone coming from a blackberry like me. However there is a peculiar problem both of us are facing. The data xonnection sometimes hangs on 3G and does not move to h or h+, and in 3g therd is no data transfer. The data transfer happens only on h+. That means for all practical purposes there is no data transfer. Sometimes it alsi so happens that the phone is showing the h+ icon but again there is no data transfer and i cannot access any internet related app. In these cases when the data hangs the only option is to activate the flight mode and then again reconnect. Then the data works fine. Off late this has started happening a lot. I have tried a couple of things like deactivating h and h+ and working only on 3g but to no avail. Can anyone help with this. I have not been able to test on other networks so i cannot be sure whether this is a device related problem or due to the network. Any help would be highly appreciated.
Regards
Sent from my GT-I9100 using XDA App
I am also facing this exact issue. I am on Airtel (India) network. For me, it seems to happen when I am at some particular locations, and works smooth at some other locations.
I just deactivate data network mode and re-activate it (long press power) instead of flight mode, takes only 10-15 seconds.
Don't know if rooting and using custom roms will fix this issue, because I strongly believe it to be network-related. I used to have similar problems with HTC Desire with various sense/AOSP custom roms.
He y buddy. But if ur on airtel and i am on tata docomo and we both r having the same problem, maybe it is not a network problem and is rwlayed ro some handset setting. Did u try the *#302179# trick. Did it work for u. Same problem in othe networks and for some of them this trick worked.
Sent from my GT-I9100 using XDA App
And by the way thanks for the data connection mode trick ( long press). Atleast it is a better way to make it work.
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Anyone please any more ideas as this issue is very frustrating
Sent from my GT-I9100 using XDA App
i have the same problem i.e data loses connection. after a fresh flash of stock rom and factory reset , it starts working fine for a week or so and then the shyt happens again . i can tell u , its not a hardware issue, it more like a software issue.
i m not good at android but wen i used to run squid on a linux machine as a proxy server , i recall i had to clear a log file to make data flow possible every few days. i think android has a similar issues some logs files build up or some **** like that.
Happening to me as well.
I always thought it was vodafone's poor network as my phone never downloads data when 3G is showing, it will only show upload arrow, then when it change's to H I get both uplaod and download arrows and starts working fine.
One thing I did notice though is when in Gran Canaria 3G was showing and working and data speed were ridiculously fast compared to here in the U.K
Surely this must be related to kernel used???
I have the same issue on my I9100 KI3, KF4, KG2 stock rom with either KG2, KF4, KI3 or KI4 modem. This is a combination of tower and our phone modem or kernel issue. I am having this issue with AT&T USA on KI3 and KI4 quite often in Champaign, IL. But when I went back to my country in Asia(Taiwan) 3 months ago, KI3 rom and modem have no 3G issue at all. I was on 3G 24/7 for 3 months without any issue there. However, I had the same 3G issue in Taiwan when I was on KF4 modem with KF4 rom when I first bought the phone. This is really a funny issue. I tried all the tricks and switching so many rom and modem, but 3g hang still happens to me with AT&T network. Now I am trying to lock the WCDMA band to 850 only, see whether it helps.
having the same issue here, but im quite sure its network related, inside my office the 3g dissapears at all and the same happends to a friend of mine who owns a SGS2 as well. whenever my outside the internet works as intended
also flashed trizillions of roms and modems before i gave up and blamed it on network rofl
Hi All,
I am having a strange problem with my S2 since last few months. I am from Mumbai, India and using Airtel network. There is a spot in my apartment which has very poor network reception of Airtel and I face issues whenever my cell is in that spot for a while. It happens that whenever I take my cell in that area, it starts losing signal bars till no bars are highlighted on the status bar at the top. It keeps showing zero bars but does not show "no signal" icon. Then, after keeping my cell in that spot for a while when I bring it in a better connectivity spot, signal bars start increasing and it appears that my cell has better reception again. However, if anyone tries to call me or I try to call anyone, they get "Out of coverage area" message or I get "Network registration failed" message respectively. I am having this problem since the day I started using Airtel and have tried a lot of remedies but only thing that works is rebooting my cell. I have tried using OpenSignal app to reset my connection whenever my cell comes back from the spot but even that fails to revive it and ultimately I have to reboot.
Has anyone faced such an issue and any ideas about a fix? Does it look like an issue with my cell or could it be an issue with my network provider? I would prefer not to root my S2 since I have 3 years warranty on it but if you think that it's the only way out of this, please let me know your opinion.
Thanks.
Sounds like a carrier issue to me. You pretty much said exactly that yourself when you said 'There is a spot in my apartment which has very poor network reception of Airtel and I face issues whenever my cell is in that spot for a while'.
That's normal in many buildings. Particularly if the network coverage in your area is borderline or poor. I have a similar issue in my house, in a few rooms I get no bars & sometimes coverage drops out completely, whereas in my loungeroom/dining/kitchen at the back of the house I get good coverage (for me, anyways).
You could try different modems, which might improve things. You don't have to be rooted to flash these, you can flash them using Odin. Tho it is easier to flash them with CWM if you're rooted.
I use to had the same issue with my 3 carrier at my desk in the office, and still on 2g services. I but since last month they already improved to hsdpa network added more bts and now my blank spot became H.
Yes you may try to change other service providers
Sent from my GT-I9100 using xda premium
Thanks for your suggestions guys. Yes, it might be only related to the carrier. But, I think that if signal goes down to zero and then when my cell is back in better coverage zone, shouldn't the modem take care of network registration by itself? My problem is that it doesn't. I have to reboot my cell every time after I come to know that my cell is showing signal bars but is not actually registered on the network. If I reboot my cell, everything becomes normal and so if it was just an issue with the carrier, shouldn't it continue like that even after reboot? If I think about it logically, I think following should help me out:
1. Try out a different cell for a few days and see if I face this issue or not.
2. If answer to 1 is no, then try out different modems on my S2 and see if that helps.
Actually, I just wanted to check if anyone else has faced this issue and figured out that something is not right with S2 drivers or something? That would help me with quick resolution of my problem.
Sent from my GT-I9100 using XDA
Yep, your logic is sound ;-)
One thing tho. With regard to trying your sim out in another phone, you have to keep in mind the radio hardware is obviously different in different phones. And what that means is (and this is something I've observed on XDA), chances are you'll find the sim works perfectly in the other phone & you have no issues at all. This might be due to the actual equipment your carrier is using in the cell tower(s) you're close to, also the frequencies that gear is using might also be playing a part in your problems.
So definitely try it out in another phone & see what happens, but you could do worse than try out a bunch of modems in the S2 & see if that improves things.
crypticlight said:
1. Try out a different cell for a few days and see if I face this issue or not.
2. If answer to 1 is no, then try out different modems on my S2 and see if that helps.
Actually, I just wanted to check if anyone else has faced this issue and figured out that something is not right with S2 drivers or something? That would help me with quick resolution of my problem.
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Those are carrier issues, and maybe even the material of the constructions, in my house there are rooms where there's almost no signal at all, and in the living room it's ok, you should try to see in which tower you are connected maybe thats the problem
I have also had these problems on various networks here in Australia. If you don't need the data network, you could try using 2G only option. But that's not really a fix, is it? I suggest you try a pre-paid SIM from another network provider, to test them out first, before re-contracting.
Good luck. :fingers-crossed:
MistahBungle said:
One thing tho. With regard to trying your sim out in another phone, you have to keep in mind the radio hardware is obviously different in different phones. And what that means is (and this is something I've observed on XDA), chances are you'll find the sim works perfectly in the other phone & you have no issues at all. This might be due to the actual equipment your carrier is using in the cell tower(s) you're close to, also the frequencies that gear is using might also be playing a part in your problems.
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Click to collapse
Yes, I was also thinking about it. It could be the combo of cell tower and S2 that are not liking each other that well.. And, if that's the case, I really hope that the issue can be resolved by switching modem drivers. I will have to do some what-ifings to nail this down now.
I like the other suggestion by HotrodHarry on trying out 2G only option - not the best way out but will help me in zeroing down on the cause.
I have an I9300 which I use on Vodafone UK. The phone was a sim-free handset, CSC=BTU
I'm currently running firmware XXEMC2, rooted
I sometimes get an issue where my HSPA data connection will stall. All I'll see is the "up" arrow flashing for around 2 minutes, but no data will be downloaded.
After around this period of time, or if I switch phone off/on line the connection will start working again
A few times I've noticed when this occurs the data connection symbols will disappear completely - so perhaps the phone or network is totally timing out.
This has occurred with a variety of firmware levels back to XELLA and before. My suspicion is that it's a network issue, but was wondering if anyone sees this on any other network.
I am considering trying one of the vodafone branded firmware's MODEMs in case there's anything they tweak that might work better.
planetf1 said:
I sometimes get an issue where my HSPA data connection will stall. All I'll see is the "up" arrow flashing for around 2 minutes, but no data will be downloaded.
Click to expand...
Click to collapse
I've now tried a variety of modems (including vodafone fw / modem) & full firmware but continue to see this issue from time to time.
If left alone after something like up to 5 minutes the connection will drop and recycle. No idea if that's phone or network initiated.
It is however VERY frustrating. My strong suspicion is that this is a VODAFONE NETWORK ISSUE not a handset issue. Of course as my phone is a sim free phone it may be tricky convincing vodafone of this fact.
Has anyone else seen these issues, especially on vodafone uk?
It *seems* to occur more on a few particular cells (well I notice the ones at gym for example) and less (possibly never) on suresignal, and just occasionally at work (small cell?) Overload on the cells is my suspicion ... classic vodafone.
I've never noticed this on 3UK, though that's been on a nexus S (currently lost ). If only 3UK had coverage at work I'd switch back easily. Vodafone has broader geographic coverage but I'm convinced the network is more flakey
When you have an UP arrow, that is upload. This signifies a connection going out from your phone to the network. If this hangs for a while and does not produce any connection back (DOWN arrow), this would definitely signify a network issue to me. Sometimes on the S3, the signal bars say there is a signal when there isn't or there is a signal but the connectivity between you and the network is non-existent
There are several things that can cause this. It can be Mast, Network, SIM, Modem, baseband... Its hard to say. All you can do is rule them out one at a time.
My gut feel is network too. It's definately happening with a good decent signal when stationary.I need to check more closely but it also seems location dependent (but not single location)
Hi,
I have Asus zenfone max pro m2 phone with airtel sim. At my home, I get almost zero connectivity (both voice and data), all the time. It works perfectly fine in other places, but, I think it might not still be the best though, I do see some minor drops in connectivity every now and then, in other places too.
I placed the sim in another phone(redmi note 4g) at my home. It gets good voice and data connectivity (4g with decent speed). So I think the problem might not be with the sim. It should either be with the phone or something to do with airtel's cell towers.
I have attached the screenshots of phone information in both the cases (my phone with no connection and redmi note 4g which has good connection)
I think the reason might be either the phone has a bad radio/modem hardware or software. Or there might be problems with connecting to some cell towers. I think there are more than one cell tower nearby and somehow my phone is ending up not being connected to either(something to do with cell tower handoff!?). I sometimes see the phone getting connected to 4g/edge, but quickly drops. I do have JIO sim and it works fine. I have tried several things, both basic(switching sim cards, placing only one sim card, reset network, reboot etc etc.) and advanced(trying out different roms, locking bands with network signal guru), but no luck, anyone facing similar problem or has any solution? If its some kinda software problem, I can try flashing some software(kernel/modem?), I have my phone rooted.
Thanks in advance