Database Users

serious issue on SGS-2 and 3g internet

i own a samsung galaxy s2 ordered from uk,
everything working fine except for this serious issue that i have been trying to resolve till now.
i have a monthly internet subscription from my carrier and it always been working fine on my iphone ( i mean here connecting through the 3g network ). but in the S2 .. i have to use Edge to be able to access the internet ( the mobile network mode must be set to GSM only ). whenever i switch the network mode to GSM\WCDMA auto , the 3g icon appears but when it tries to connect to internet, the phone automatically switch to Flight mode and i loose the network signal. and this happens all the time. till now i am only able to connect to the internet by switching the mobile network mode to GSM only which only uses Edge network .
i have tried every possible thing to resolve this issue but nothing worked for me. please help

What country are you in? What carrier are you on? What bands do they use?

location location location.
Where are you from?
And what frequency does operators in your region operate.

just curious, have you tried hard/factory reset?

i am from saudi arabia and i am using Mobily network.
mobily is using HSDPA network as well as Edge network.
i did a software reset and still the same issue.
phone information:
Baseband version I9100XXKDH
Kernel version 2.6.35.7--I9100XWKDD-CL161513
Build Number GINGERBREAD.XWKDD

crazy idea - is there any blocking going on in SA or with that carrier? Have you used another not carrier supplied smartphone successfully on that network?

I have been always using their 3g network on my iphone. And still there network only on edge connection on the s2. What i have noticed is that the saved apn sometimes shows up and sometimes disappears

omnia_owner said:
i own a samsung galaxy s2 ordered from uk,
everything working fine except for this serious issue that i have been trying to resolve till now.
i have a monthly internet subscription from my carrier and it always been working fine on my iphone ( i mean here connecting through the 3g network ). but in the S2 .. i have to use Edge to be able to access the internet ( the mobile network mode must be set to GSM only ). whenever i switch the network mode to GSM\WCDMA auto , the 3g icon appears but when it tries to connect to internet, the phone automatically switch to Flight mode and i loose the network signal. and this happens all the time. till now i am only able to connect to the internet by switching the mobile network mode to GSM only which only uses Edge network .
i have tried every possible thing to resolve this issue but nothing worked for me. please help
Click to expand...
Click to collapse
Hi, very similar issue here.
For this four days since I have got my GS2 everything was just fine. The data connection and 3G speed was great. Yesterday, all of the sudden all got crappy. Could not display any web pages. It starting to display page but after few seconds pop-up window appear which say "Data connectivity problem. The server failed to communicate. Try again later"
Interesting that my gmail, market, xda app working fine as normal.
I'm in Ireland on O2 now.
Baseband version I9100XXKDH
Kernel version 2.6.35.7--I9100XWKDD-CL161513
Build Number GINGERBREAD.XWKDD
Can someone help to solve the problem, please. Is it possible that something with the hardware is wrong? Broken?
I'll perform the factory reset and will let you know.

i just managed to flash my device with the latest EXE1 dated May 3.
and i am still facing the exact same problem.

omnia_owner said:
i just managed to flash my device with the latest EXE1 dated May 3.
and i am still facing the exact same problem.
Click to expand...
Click to collapse
Maybe we should ask for replacement...

I have same issue, and for Ihrrob, your other application are working fine because what i noticed on my mobile that 3G & 2G connection is there but not permenant that's why WIFI hotspot always disconnect and VOIP applications are not working.

Hassanalaa said:
I have same issue, and for Ihrrob, your other application are working fine because what i noticed on my mobile that 3G & 2G connection is there but not permenant that's why WIFI hotspot always disconnect and VOIP applications are not working.
Click to expand...
Click to collapse
You are right the 3G/2G connection is there but not permanent.
If I press the Internet icon the home page, which is 'Google' appears (sometimes) immediately. I think this is because the page is very light. If I try to open a regular page it loads 1/3 of the content or nothing.

i just hope it is a software bug not a hardware problem

Type on the dialpad *#*#4636#*#* and force the phone to HSDPA only on the dropdown menu. This is a hidden menu on the phone.

Isn't this carrier related?

amtrakcn said:
Isn't this carrier related?
Click to expand...
Click to collapse
Unfortunately not.
I have spoke to the rep in the store. They reset all settings for me but it didn't help.
Just to double check if he wasn't wrong I've put the sim card in to my N900 and all data worked fine.
Bad, bad...

omnia_owner said:
i am from saudi arabia and i am using Mobily network.
mobily is using HSDPA network as well as Edge network.
i did a software reset and still the same issue.
phone information:
Baseband version I9100XXKDH
Kernel version 2.6.35.7--I9100XWKDD-CL161513
Build Number GINGERBREAD.XWKDD
Click to expand...
Click to collapse
I'm on Mobily network in Riyadh, and 2G/3G is working fine for me. I stay on 2G most of the time to save battery, but have tested 3G and got around 3mbps.
I have the same Baseband, Kernel and Build number (rooted)
Are you using "Market Enabeler"? It can change your APN settings, and you need to restore the provider setting.

just rooted my device.
still same weird issue.
issue again: simply whenever my device tries to connect to H+ , the device automatically enters flight mode and automatically disable flight mode so that the signal bars come back without H+ and when i check back the saved APN i see nothing there ( thought i was there before ). and this strange behavior disappears when i switch the mode from GSM/WCDMA auto TO GSM only .. after i do this the device connects regularly to Edge network and i can browse the net.
so basicaly for me i will be only able to use the device on Edge instead of HSDPA or 3G.
im really hoping for help from here because i don't think i will find any help outside of this expert community.
regards

try to make it on obligatory 3G (WCDMA only) and check if the problem still there ..

still same problem juffo
i have noticed that another post are poping up talking about almost the same issure.
i hope a new firmware will fix this

S7 Edge WIFI connection flashing off to LTE?

Does anyone else have the issue of their wifi connection switching to LTE every 4
seconds then right back again? Just noticed this started a couple days ago?

As a test, try turning off Smart Network Switch under WiFi settings.
Sent from my SM-G935F using Tapatalk

Did you figure out what was going on with your wifi flashing of and on? My s7 edge just started doing the same thing.

Can't receive calls randomly

Recently my s7 edge appears turned off when people try to call me. Then after a while i get the text saying someone tried to call me but the phone was off (but it was actually on). No problem making calls. It's not that you can represent it, it is totally random and not too frequent but enough to annoy me.
G935F -UAE stock nougat
Does anybody know if this is a hardware problem? a bug ,or is it the carriers fault :fingers-crossed:

eri000 said:
Recently my s7 edge appears turned off when people try to call me. Then after a while i get the text saying someone tried to call me but the phone was off (but it was actually on). No problem making calls. It's not that you can represent it, it is totally random and not too frequent but enough to annoy me.
G935F -UAE stock nougat
Does anybody know if this is a hardware problem? a bug ,or is it the carriers fault :fingers-crossed:
Click to expand...
Click to collapse
This used to happen to me too, i think it was because of carrier and coverage, especially when 4G signal is low.
What i found helpful is keeping my device on 2G only when on Wi-Fi or don't need high speed cellular data.
I use this app to have a shortcut of 2G/3G/4G switch in notification panel, makes switching between 2G and 4G easier.

panart said:
This used to happen to me too, i think it was because of carrier and coverage, especially when 4G signal is low.
What i found helpful is keeping my device on 2G only when on Wi-Fi or don't need high speed cellular data.
I use this app to have a shortcut of 2G/3G/4G switch in notification panel, makes switching between 2G and 4G easier.
Click to expand...
Click to collapse
thanks for your input.
Thing is i NEVER use mobile data, it is off all the time and the apn list is empty (no profiles), i only connect using wifi. Does that still have an effect ?
I hope it is a coverage problem

eri000 said:
thanks for your input.
Thing is i NEVER use mobile data, it is off all the time and the apn list is empty (no profiles), i only connect using wifi. Does that still have an effect ?
I hope it is a coverage problem
Click to expand...
Click to collapse
It doesn't matter if you never use data, device can still connect to 3G or 4G (though in some cases an APN may be needed to connect to 4G, that depends on carrier). In your case, since you never use cellular data, you can safely set your device to 2G only. With 2G you will have better signal for sure, and it's less likely to have missed incoming calls.
Sent from my Samsung Galaxy S7 Edge using XDA Labs

eri000 said:
Recently my s7 edge appears turned off when people try to call me. Then after a while i get the text saying someone tried to call me but the phone was off (but it was actually on). No problem making calls. It's not that you can represent it, it is totally random and not too frequent but enough to annoy me.
G935F -UAE stock nougat
Does anybody know if this is a hardware problem? a bug ,or is it the carriers fault :fingers-crossed:
Click to expand...
Click to collapse
I've had the same problem with a Galaxy J7 2015 also bought in the UAE.
Again not too often but enough to be annoying. I found that selecting 2G/3G without LTE improved the situation.

panart said:
It doesn't matter if you never use data, device can still connect to 3G or 4G (though in some cases an APN may be needed to connect to 4G, that depends on carrier). In your case, since you never use cellular data, you can safely set your device to 2G only. With 2G you will have better signal for sure, and it's less likely to have missed incoming calls.
Sent from my Samsung Galaxy S7 Edge using XDA Labs
Click to expand...
Click to collapse
tried 3g/2g (auto) and couldn't receive calls on my old galaxy w (same sim) i never had any missed calls and it was set at 3g/2g auto
trying 2g now

hello,
i have the same problem..i turned it on 2g but i last calls again...the problem came after the last update in btu and i am pretty sure that other users have also the same problem...

arxontas2323 said:
hello,
i have the same problem..i turned it on 2g but i last calls again...the problem came after the last update in btu and i am pretty sure that other users have also the same problem...
Click to expand...
Click to collapse
i think mine started after getting G935FOJV1DQAV csc update

Wifi Calling is a joke on at&t Galaxies... Why?

Since I got the S8 and enabled wifi calling I've noticed some issues...
Half the time I look at the wifi icon the WiFi calling circle isn't there. No matter if I'm on my 5ghz or 2.4ghz wifi. Same at work or any other wifi. It seems to come and go. Sometimes resulting in messages taking forever to send because it's trying to send over WiFi but it's randomly dropped wifi calling.
I had the same problem on my att S7, so it's not just this phone...
HOWEVER, my TMobile S7E will kick wifi calling on the second I connect to WiFi and will STAY on the entire time I'm on it. I could even turn on airplane mode, then Wi-Fi while I'm at work and not worry about missing anything at all. If I do the same with my att S8, I get flooded with texts I didn't get when I turn airplane mode off and reconnect to cellular.
Anyone else notice the wifi calling is flaky??

Wifi calling works well on my device may be its isp problem
joe3681 said:
Since I got the S8 and enabled wifi calling I've noticed some issues...
Half the time I look at the wifi icon the WiFi calling circle isn't there. No matter if I'm on my 5ghz or 2.4ghz wifi. Same at work or any other wifi. It seems to come and go. Sometimes resulting in messages taking forever to send because it's trying to send over WiFi but it's randomly dropped wifi calling.
I had the same problem on my att S7, so it's not just this phone...
HOWEVER, my TMobile S7E will kick wifi calling on the second I connect to WiFi and will STAY on the entire time I'm on it. I could even turn on airplane mode, then Wi-Fi while I'm at work and not worry about missing anything at all. If I do the same with my att S8, I get flooded with texts I didn't get when I turn airplane mode off and reconnect to cellular.
Anyone else notice the wifi calling is flaky??
Click to expand...
Click to collapse

Again, TMobile works on ANY wifi. Any att phone I use it comes and goes or doesn't work at all.

joe3681 said:
Again, TMobile works on ANY wifi. Any att phone I use it comes and goes or doesn't work at all.
Click to expand...
Click to collapse
My s8+ and s7e and note 5 WiFi are working fine on any WiFi network. No problem at all. Maybe you got problem with hardware.
On Edge of Galaxy

It only works when the signal reception is poor and turns off automatically when the signal is good.

fookxixi said:
It only works when the signal reception is poor and turns off automatically when the signal is good.
Click to expand...
Click to collapse
This is indeed how it works on AT&T and it works a treat. Hand over even works very well when going from inside a building to outside with cell signal.

Except when you don't realize a message didn't send because it doesn't know how to send it or when you turn WiFi off and get a bunch of texts you should've received hours before.

joe3681 said:
Except when you don't realize a message didn't send because it doesn't know how to send it or when you turn WiFi off and get a bunch of texts you should've received hours before.
Click to expand...
Click to collapse
I have not experienced this, sorry.

I am having the problem too.

Maybe enable aggressive handoff in Dev options?

Network issue when using the 3G mode

Hi,
I have a SM-N910H and since months i have an issue with my 3G and network connection.
When i set the network to automatic 2G/3G, the phone can't recognize my network and i have a message telling that i'm not registrated on the network, and when people called me the phone rings for them but for the Note nothing happens. When i switch to 2G, the phone works perfectly and i can connect on EDGE :crying:.
i've reset the phone many times and update it with the latest ones but nothing happens.
has anyone faced the same issue?
If i root the phone and put a custom rom can solve the issue?
i love so much my Note so i don't want to loose it.
Thanks in advance.