So, I've done quite some looking around in this forum and others but have not been able to to find an answer...
Here's the issue: when leaving an area with wifi connection, my galaxy s refuses to connect via 3G. Sometimes the "H"/"3G" is shown but no data is being transfered, sometimes the "H"/"3G" doesn't even show up. I've tried switching to plane mode and back, but that only helps sometimes. Switching to 2G and back doesn't help either, neither does re-selecting my provider from the provider list in the wireless settings or turning wifi on and off.
I'm on JF3 still. And here's the question: Is this an Eclair bug or firmware related? And is there a workaround, besides switching to plane mode and back every time I leave the house?
Your help is appreciated!
Thomas
I have similar issue too. I hated it.
It appears to be an Android problem.
http://code.google.com/p/android/issues/detail?id=2207
I have this problem too, running an optus one.
I think sometimes.. going into the APn seetings, clicking on the field, dont change anything and press okay.. so it refreshes the APN settings and it works?
Or I rescan for networks. and choose my optus provider again.
Such a fluke.. that first few days i got this phone didnt have this problem.. and now it does... hope it gets fixed soon.
Okay, thanks. will try my luck with the android developers...
I checked out the link to google code and there seems to be a solution: restoring the default apn settings (hit the menu button when in the apn list). Seems to work, at least for now, my 3G connection came on when I left wifi after being on wifi for a few hours.
Hi,
I received the Oneplus 2 last week and I have spent some days outside my home country. I have set the OS to not use data while in roaming mode. However, there are emails /whatsapp messages popping up spuriously.
I have checked multiple times and the configuration is correct. It seems that from time to time, the phone makes a data connection and then disables it - maybe it is during handover of the carrier?
Does anyone have experienced the same issue? I have OxygenOS 2.0.2 running with no root or whatsoever.
Yes , I'm experiencing the same issue and have no idea to stop this.
currently searching on web resources.
If you find something, tell me !
I'll do the same !
Hello,
I've had this issue across more than 1 device and more than 1 carrier.
Here's what happens:
I enable WiFi, and for a while everything works as expected. I can send and receive MMS messages. I can disable WiFi and go back to my 4G connection.
The problem is, after an unknown amount of time, the phone drops the 4G connection in the background. I only know when I can't receive/send MMS messages anymore. At that point, if I disable WiFI there's no 4G data connection, and I have to turn Airplane mode off and turn it back on.
This is really annoying. It happened to me using Sprint and a Galaxy S4 (both stock and custom ROMs) and it's happening to me with a Galaxy S5 from MetroPCS. (I've used the stock Metro ROMs, Stock T-mobile ROMs, and Custom T-mobile ROMs).
Right now I'm using a Stock T-mobile ROM with the latest firmware, carrier is MetroPCS.
What can I do so this doesn't happen? It's really frustrating.
Thank you for your time.
Disabled "Smart Network Switch" in WiFi Settings?
*Detection* said:
Disabled "Smart Network Switch" in WiFi Settings?
Click to expand...
Click to collapse
Hello.
That's already disabled.
Should I enable it?
I tried with "smart network switch" enabled and disabled and problem still happened.
My S5 G900F Android 5.00 (Smart Network Switch disabled, Power Save disabled) on EE UK has had this problem for 9 months after phone upgraded itself to Lollipop (EE win the accolade to being the SLOWEST ON THE PLANET to provide Android updates.....). Since Jan 3, my wife's G901, a couple of weeks after it upgraded from 5.0 to 5.02, has developed the same problem. Neither phone has ever been rooted or other.
I have fruitlessly searched everywhere for a solution without success. EE Customer Services Tier 2 & Samsung's own service centre have failed to fix it. EE & Samsung blame each other for 5.1 or 5.1.1 not being available for download. Neither is prepared to resolve the issue despite hours on the phone. Have tried Safe Mode, Factory Reset, clearing everything, reloading APNs & Samsung even reloaded Android. All a waste of time: Many many days of it!
After approx half an hour connected to Wi-Fi, only way to get the mobile data to connect, is either reboot, enter & exit Air-plane mode or flip the 4G > 3G > 4G connection under More Networks. Have tested the fault in different cell areas countries and continents; fault is same everywhere.
It seems there are quite a few sufferers of this problem.
Samsung S5 keeps losing data connection
I have the same problem. My new Samsung phone loses the data connection (even though data is turned on) and I can only re-connect by restarting the phone. The first EE shop I took it to couldn't help at all. The second gave me a new SIM - that didn't work. Then I tried online support and after 3.5 hours of my life, in which I was passed on from one person to another, they completed a factory re-set - which didn't work (and additionally lost all the personalisation of my screen and some of my contacts). So I now have a not-very-smart phone which I have to re-start every time I want to use data. This is a business contract and the phone is less than two months old, but I'm not getting any effective support from EE. Android version is 5.0.2
me too, since last update. and app 'phono' shows "mobile data off" not got a time on it, but when i leave wifi coverage, it wont reconnect to cell data 2g/3g/4g. flightmode toggle to restore.
Abandon hope if you have this intermittent mobile data problem!
...at least until there is a software update, though I have no idea if that will help.
I have now tried a new sim card, a factory reset, and a replacement phone - which was provided only because I'm a business customer and I found a sympathetic member of staff. *By the way, I was told that if you are personal customer they won't consider replacing your phone if it is more than a month old - even if you started complaining about the phone as soon as you got it, the chances are a month will have elapsed by the time they put you through the hoops of a new sim, reset etc - and then it is too late to insist on a replacement phone.
In any case the replacement phone didn't resolve the issue so I have reached* a dead end. My phone fails to connect to data after having been connected to wifi - you have to do it manually each time you move away from a wifi connnection. At first I was doing it by restarting the phone, but am now following the advice of someone else who has the same problem and am going into flight mode and out again. *
This is not satisfactory, and it seems from reading forums that EE are to blame for the problem rather than Samsung, but I'm not 100% sure about that.*
Possible solution that works, for me, at the moment!
Having suffered this issue of my S5 (SM-G901F) not connecting to mobile data after being on Wi-Fi for a while unless switching airplane mode on/off for a few weeks; although it has probably been happening since the update I received late December; I have tried all of the turn this switch off, factory resets (x2), etc, etc, etc. and Googled the issue without success.
I have found this thread interesting, and I even tried calling EE support only to be told "you have tried everything that we would tell you to do" and "it wouldn't be a sim card, or handset issue, sounds like software". The reply was basically that like-it or lump it until the 5.1 update is released "by Samsung not EE because EE do not release Android updates". [Perhaps EE don't release the updates, but the stock rom is tested by them and their bloatware added before they eventually release it!!!]
Following my last reset I tried selectively re-installing the apps I used incase that was causing the issue. No Luck!
One last thing I tried was to look at every system 'thing' that I could find which used/switched any part of the mobile/mobile data/wifi - in addition to the settings I had already tried (all of which were mentioned in this thread previously). One thing I could not find not mentioned here, or anywhere, was the VoWi-Fi call on/off which I had always set to on as I do not live in a great reception area. Calling over Wi-Fi is great when you don't have a strong mobile signal.
Having 'played' with this setting for the last 24 hours I have found that the VoWi-Fi on/off appears to be a possible cure - for me anyway.:fingers-crossed:
When VoWi-Fi was set to off and leaving the phone connected to Wi-Fi overnight, the S5 immediately switched to mobile data this morning when I turned the Wi-Fi off . It continued to switch between Wi-Fi and mobile data all morning whilst out and about in and out of Wi-Fi connections - Woop Woop!!!
I then tried switching VoWi-Fi on (with Wi-Fi on and at home), leaving the phone for a number of hours, only to find that when I turned Wi-Fi off the phone refused to connect to mobile data even with a 'decent' mobile signal. The only way to get it to connect was to go back to switching Airplane mode on/off.
Switched VoWi-Fi off again, left Wi-Fi connected, left the phone for a couple of hours, etc. and hey-presto immediately switched to mobile data when I turned the Wi-Fi off. [Dances around the room because he's got the S5 automatically switching to mobile data again. Even though I'm at home with a great fibre internet and strong Wi-Fi connection!!!]
I do not know if this could be a solution for the others who are suffering from this issue, but it appears to be a solution for me at the moment. I thought I would share as your previous posts have helped me and you all seem to be pulling your hair out; like I have been; trying to find a solution.
Try it, it may work, but don't shoot me if it doesn't!
It's encouraging to know that I'm not crazy. I've had this issue across two devices and carries.
John,
Thank for your suggestion about WiFi calling. Unfortunately, I always have it off! I never used it, so maybe I should try turning it on? We'll see lol.
At this point, I think this is going to be my last Galaxy line phone.
Is it wi-fi calling that's causing the problem?
I have wondered if there is a link with wi-fi calling, but haven't tested it properly. I signed up with ee and bought the Galaxy phone specifically so that I could use wifi calling, as the town where I live (in the Scottish Borders) doesn't get a mobile signal strong to work reliably indoors from any of the networks. I'll try turning off wi-fi calling to see if that sorts the data thing (though I see that for one person above it did not). That would mean I wouldn't get calls or texts when I'm at home so it would not be a permanent solution for me. But in fact the wi-fi calling is not reliable anyway....
Brian_svc said:
It's encouraging to know that I'm not crazy. I've had this issue across two devices and carries.
John,
Thank for your suggestion about WiFi calling. Unfortunately, I always have it off! I never used it, so maybe I should try turning it on? We'll see lol.
At this point, I think this is going to be my last Galaxy line phone.
Click to expand...
Click to collapse
Brian,
You never know the way things are going with this issue; given that nobody seems to be able to pinpoint the fault; turning it on may just sort it!!!
still no change and its a pita.....
Hi,
I have a SPH-L720 with Lineage OS 14.1 that was meant for the GT-I9505. It has NG2 and it is internationally and domestic unlocked.
At this moment I’m trying to use it in Brazil and I’m having issues with voice and data such as:
- Data connection dies after some time
- After I disable the Wi-Fi the data connection doesn’t kick in automatically, I have to manually enable and disable it a few times to get it back, sometimes I have to wait a while until it finally returns.
- After some time I can’t make or receive voice calls.
So the phone data/voice connection it is unstable, basically it suddenly decides to take a break and the only thing that appears to keep working is the Wi-Fi and SMS.
Do you guys have any suggestions? Not sure if upgrading to OD2 would help. This is the first time I’m really testing this phone with GSM, it was working fine with FreedomPop before.
I’m really open to any recommendations.
Thanks in advance!
I've had stock MM for two years, but recently it was starting to get really slow so I decided it was time to install a new OS. I've tried XenonHD, Lineage 16, AOSP and Lineage 17 but all have the same issue: I just can't get the mobile data to connect. I've tried all the common fixes for this issue suggested on the internet, like toggling airplane mode on/off etc, and I've checked that the APN settings are correct, allow data roaming is enabled and my data plan is still active.
I think it's some kind of issue with the ROMs, because someone else has mentioned that XenonHD won't connect to data while roaming. I'm currently residing in a European country that isn't my home country, and using the SIM from my home country since the provider has good value for money data plans and the EU has recently made it illegal for them to charge extra for roaming within its borders. So I think the devs need to catch up with the times and realise that data roaming is now fundamentally important for some users. Unfortunately, it looks like they have abandoned the ROMs they have put out, so I won't be getting any help from them directly. Does anyone else have any idea what I could do, apart from reinstalling stock MM? And I'd rather not buy a local SIM card right now since I'll anyway be moving to a different country in a few months.
I've since also tried ViperOS and MIUI 8, but still no data. From Lineage 17 onwards, my phone was also showing the wrong time and date, so there seems to have been some additional issue with the network connection (even though I could make and receive calls). I also noticed that if I would try to manually connect to the other available network here, immediately I would get the message "Unfortunately, the process android.com.phone has stopped."
So I've gone back to stock MM for now and the data came back. I would still appreciate if someone could fix this issue with the custom ROMs though so that I could use one. I think they are faster than stock and it would be nice to explore their features. It's a shame I can't use them just because of one issue. I will probably still need the data roaming when I move to another European country in a few months time.