Database Users

Samsung Galaxy S4 Call Drop and Network Issues

Hi All,
I have been facing major call dropping issues on my new Samsung Galaxy S4 which i previously thought to be a problem with my new postpaid connection. but later on searching realized this to be a bug which many others are facing world wide. I couldn't find any proper solution to it other than this.
What is did is change in settings>connections>more networks>mobile network>network mode> then select gsm only. Have been using it for 2 days now and seems the issue is resolved.
Might help others.

This isn't a fix, why would I run my phone only in 2G / Edge mode... for a 3G/4G device???
There is something strange going on here, I've replicated this issue on 3 different carriers in 3 different countries (AT&T = USA, Chunghwa = Taiwan, China Unicom = China), so it's NOT a network issue. I strongly suspect that the first batch of Samsung GT-i9500's have faulty network chips, there is no other explanation as to why this is a continued issue even after all these software updates.

I had a reception problem with the I9505 too, so it's seems the hardware isn't the problem. With the newest firmware, the problem is gone.

My reception is great, only in shelters it goes down to zero bars and still didn't had any call drops.
I use an I9500 which I bought it on 13/05.

chalid said:
I had a reception problem with the I9505 too, so it's seems the hardware isn't the problem. With the newest firmware, the problem is gone.
Click to expand...
Click to collapse
This isn't a RECEPTION issue. Randomly, throughout the day:
1) Signal will go from full bars to NIL... I'm talking airplane mode with the circle with a line through it.
2) Some time later (a few seconds to longer sometimes), the signal will come back along with 3G / H+.
It has improved with software updates, but it still happens and is completely random both time and location wise. The worse part is, this will happen sometimes in the middle of a phone call, which means you suddenly get disconnected. And yes, this happens when I'm sitting in one spot with a strong signal, so something is seriously wrong with some of these early i9500's.

arindam_mitra1985 said:
Hi All,
I have been facing major call dropping issues on my new Samsung Galaxy S4 which i previously thought to be a problem with my new postpaid connection. but later on searching realized this to be a bug which many others are facing world wide. I couldn't find any proper solution to it other than this.
What is did is change in settings>connections>more networks>mobile network>network mode> then select gsm only. Have been using it for 2 days now and seems the issue is resolved.
Might help others.
Click to expand...
Click to collapse
I yet have to face this issue. You using i9500?

Happened to me with a self cutted microsim. Replaced it with a microsim factory made solved my problem.

I was experiencing the same issues with my i9500. It all solved when I flashed MG9 modem. Since then, I´ve never lost signal or service.

siffar said:
I yet have to face this issue. You using i9500?
Click to expand...
Click to collapse
Yes I use 9500 and my problem is gone now.
Sent from my GT-I9500 using xda premium

There have been several other network related issues with s4..all with different solutions. .but as of now the issue I faces was random call disconnects which is gone after selecting only gsm as im on 2g..
We can discuss all problems related to s4 network and their probable solutions in this thread... hope that might help many..
Sent from my GT-I9500 using xda premium

Have the same problem whit telenor in denmark. Talked to telenor about it. And they told me after some test, that the phone refuse to change from 4g to 3g when there is a incoming call.
But when i'm at the 3g /gsm network only i'm getting all incoming calls
Sent from my GT-I9505 using xda premium

Frankness said:
Have the same problem whit telenor in denmark. Talked to telenor about it. And they told me after some test, that the phone refuse to change from 4g to 3g when there is a incoming call.
But when i'm at the 3g /gsm network only i'm getting all incoming calls
Sent from my GT-I9505 using xda premium
Click to expand...
Click to collapse
Any probable fix??

With my device no issues perfect
Sent from my GT-I9500 using xda premium

It was all good with MDM.. Then I flashed the German rom and updated to MGA and then MH2. Both of them(MGA and MH2) find it hard to stick to the 3G signal and it just drains the battery. I put it to GSM only (2G) and the signal is full but the battery in my opinion is still not AS good as MDM. I sooo soooooo hope they fix it in the next update and soon!

arindam_mitra1985 said:
Hi All,
I have been facing major call dropping issues on my new Samsung Galaxy S4 which i previously thought to be a problem with my new postpaid connection. but later on searching realized this to be a bug which many others are facing world wide. I couldn't find any proper solution to it other than this.
What is did is change in settings>connections>more networks>mobile network>network mode> then select gsm only. Have been using it for 2 days now and seems the issue is resolved.
Might help others.
Click to expand...
Click to collapse
hi guys i have a different issue i hope u guys can help
when i am on call other person cannot hear my voice untill i open my loudspeaker..

try to flash latest update

cmd512 said:
This isn't a fix, why would I run my phone only in 2G / Edge mode... for a 3G/4G device???
There is something strange going on here, I've replicated this issue on 3 different carriers in 3 different countries (AT&T = USA, Chunghwa = Taiwan, China Unicom = China), so it's NOT a network issue. I strongly suspect that the first batch of Samsung GT-i9500's have faulty network chips, there is no other explanation as to why this is a continued issue even after all these software updates.
Click to expand...
Click to collapse
I've had the same issue on 4 carriers: ATT, China Unicom, China Mobile (2G only), Hong Kong (forgot the carrier). This only happens on my I9500 because I cannot replicate it on my HTC One. In all instances where my I9500 craps out on me my HTC produces a strong reliable signal that never drops.

Same thing here... it happens on China Unicom, Chunghua (Taiwan), and AT&T. There is something seriously wrong with a HUGE lot of i9500's.

I have the i9505 and I only have 3 options in the network mode setting menu not 4 like I was told by other users there should be.
My network data connection drops out more often than its connected reguardless of the signal strenghth bars or also despite the about phone signal information.
I have tried a few roms all with the same problem. Im on the 3 network uk I had galaxy note before the s4 and never experienced any problems at all
It is also not area related as I have checked the coverage for the area and im in a fantastic area for cover but if I am indoors outdoors at home my dads or the shops still the same constant no internet connection error the h or h+ or 3g icon just vanishes from the too for no reason.
Can anybody at all offer any help or advice in any way in reguards to it or is it most likely I have a bad handset?
If I have the network set to auto or wcdma it is the same problem .... if I select gsm only I dont get any data internet connection at all is this right?
There is no wifi on either to cause any interferance I keep it turned off on the handset and bluetooth is off too
Thanks for any help or advice
Sent from my GT-I9505 using Tapatalk 2

Hmm, really bizarre that both 9500 and 9505 handsets are seeing the same phenomena. Could it be something software related then?
Question: For those that see this cutting out and returning of network signal, do you have a bunch of stuff disabled / uninstalled / removed?

no LTE icon after 4.4.2 update

Hello people
Im posting this here as I havent managed to find a solution yet.
I have a German T-mobile 16GB d802, only the device was purchased and using it in Greece.
When I was using 4.2.2 everything was perfectly fine concerning LTE with my mobile provider.
After flashing 4.4.2, I noticed that I data traffic was not working anymore. After searching I found that my APN settings were gone, so I manually inserted them.
Following that, I noticed that when I am on LTE network and have data traffic enabled, I don't see the LTE icon on the top right corner on top of the signal sign anymore. The data traffic is working though, so it seems to be a missing icon for some reason.
In 3g/HSPA and Edge I see the relevant signs, the only problem is when using LTE
A friend of mine who has the exact same version of the phone has got the exact same issue on a different cellphone operator. So its not related to the network.
I reported this to LG using the local site, but got the reply that I haven't bought the phone from the local market and they don't know the changes made from tmobile..
On tmobile website you cannot report an issue unless you have a german tmobile subscription or for business issues, so I have sent them my problem stating Im contacting them for business related reasons
Anyone else got the same issue? Anyone using German T-mobile? Anyone who has any ideas?

update:
Got a reply from T-mobile Germany that they need to have the phone in their hands in order to troubleshoot and they cannot help me

In your dialer, enter: *#*#4636#*#*
Then go to Phone Info, scroll down and set the drop down to LTE/GSM/WCDMA or something similar with LTE at the start.
See if that works...
This is something you have to do each time you boot though.

Gnarfsan said:
In your dialer, enter: *#*#4636#*#*
Then go to Phone Info, scroll down and set the drop down to LTE/GSM/WCDMA or something similar with LTE at the start.
See if that works...
This is something you have to do each time you boot though.
Click to expand...
Click to collapse
What you propose is valid if you cannot enable LTE.
I dont have that problem. I have the option to enable LTE.
The problem is that after my phone connects to LTE I dont see the LTE or 4G icon on the top right side next to the signal sign.
But LTE works perfectly fine, I managed to make a speed test to almost 54Mbps yesterday
http://www.speedtest.net/my-result/a/785031726
So it not the regular issue that most people have with LTE being disabled, my issue is that the icon is missing
Thanks for replying though

parisstc said:
So it not the regular issue that most people have with LTE being disabled, my issue is that the icon is missing
Click to expand...
Click to collapse
Sorry. That's annoying

parisstc said:
Hello people
Im posting this here as I havent managed to find a solution yet.
I have a German T-mobile 16GB d802, only the device was purchased and using it in Greece.
When I was using 4.2.2 everything was perfectly fine concerning LTE with my mobile provider.
After flashing 4.4.2, I noticed that I data traffic was not working anymore. After searching I found that my APN settings were gone, so I manually inserted them.
Following that, I noticed that when I am on LTE network and have data traffic enabled, I don't see the LTE icon on the top right corner on top of the signal sign anymore. The data traffic is working though, so it seems to be a missing icon for some reason.
In 3g/HSPA and Edge I see the relevant signs, the only problem is when using LTE
A friend of mine who has the exact same version of the phone has got the exact same issue on a different cellphone operator. So its not related to the network.
I reported this to LG using the local site, but got the reply that I haven't bought the phone from the local market and they don't know the changes made from tmobile..
On tmobile website you cannot report an issue unless you have a german tmobile subscription or for business issues, so I have sent them my problem stating Im contacting them for business related reasons
Anyone else got the same issue? Anyone using German T-mobile? Anyone who has any ideas?
Click to expand...
Click to collapse
I have the excact same problem with my G2. I bought mine last week in the Netherlands, but its a German T-mobile branded d802 16GB LG G2.
As you already stated, LTE does work but the icon is missing.
Does anyone have a solution for this problem?
---------- Post added at 09:04 PM ---------- Previous post was at 08:33 PM ----------
Danielhtcdesire said:
I have the excact same problem with my G2. I bought mine last week in the Netherlands, but its a German T-mobile branded d802 16GB LG G2.
As you already stated, LTE does work but the icon is missing.
Does anyone have a solution for this problem?
Click to expand...
Click to collapse
In addition i also found this:
Dial 3845#*802# on LG-G2 key pad,
then the secret menu will come up...
Then: 1. Go to LTE-Only
2. Modem Settings
3. RAT Selection
4. Select GSM / WCDMA / LTE auto
But when i select LTE-Only a popup comes up saying "not supported" altough LTE works fine appart from the missing icon.

Danielhtcdesire said:
I have the excact same problem with my G2. I bought mine last week in the Netherlands, but its a German T-mobile branded d802 16GB LG G2.
As you already stated, LTE does work but the icon is missing.
Does anyone have a solution for this problem?
---------- Post added at 09:04 PM ---------- Previous post was at 08:33 PM ----------
In addition i also found this:
Dial 3845#*802# on LG-G2 key pad,
then the secret menu will come up...
Then: 1. Go to LTE-Only
2. Modem Settings
3. RAT Selection
4. Select GSM / WCDMA / LTE auto
But when i select LTE-Only a popup comes up saying "not supported" altough LTE works fine appart from the missing icon.
Click to expand...
Click to collapse
They must have made some customization in the icon that you dont get unless you download the tmobile stuff when you connect the phone at germany,
Do you by any chance speak German so you report the issue as well? Maybe if they get many tickets they will fix ut

Wifi hotspot

I have a weird issue with the wifi hotspot on ZUK-Z1. I switch it on and it switches itself off again. Then gets in a loop. Off on, off on. Sometimes it will work for a few minutes.
I'm on EE UK 4g if that makes any difference
Anyone else have this issue? Or does anyone know if there is a fix?
Thanks

Men, i'm french, internet provider : Free (name)
And i have the same problem...

Yes, this is a bug in lineage-14.1-20170130-NIGHTLY-ham.
Hope that developers will fix it soon.

Spectra90 said:
Men, i'm french, internet provider : Free (name)
And i have the same problem...
Click to expand...
Click to collapse
A workaround is to change to 3G just while the hotspot is on. That works for me. I don't use it too much anyway.

My first Z1 was stable as a rock but I have to say when I used mobile hotspot I was on 3G, that network did not provided 4G. Now I bought a second Z1 and I do see that this one is very unstable resulting that my laptop is "loosing" the hotspot and searching for another networks.
Will try this "trick"...I will see how it behaves in other locations to as it could be well that the old traditional building is somewhat blocking the signal.

pd555 said:
I have a weird issue with the wifi hotspot on ZUK-Z1. I switch it on and it switches itself off again. Then gets in a loop. Off on, off on. Sometimes it will work for a few minutes.
I'm on EE UK 4g if that makes any difference
Anyone else have this issue? Or does anyone know if there is a fix?
Thanks
Click to expand...
Click to collapse
There are no chances of it being a hardware issue. Because you told that it works fine when in 3G network. You can simply rule that out. And I don't think your network provider has something to do with turning on your hotspot! ???. It might be just a software bug. Are you on any custom ROM? If yes, then which?

Tried hotspot today in the same location but changed it into 3G instead of 4G...rock solid, no interruptions nor did my laptop disconnected once! I did read somewhere (was it here?) the the Z1 has less 4G freq bands explaining the unstable connection.

LTE does not work anymore (G600K)

Hi All,
I bought this LG G6 (G600K) from HK a month ago. It was working perfectly until few days ago when the LTE stopped working. In the notification bar I can see LTE, but there is no data going through. E.g.: messenger shows "Connecting...". Basically no 4G internet any more. So I did my research and these are my findings:
If there is no LTE coverage, the phone switches to 3g and it works - so the problem is only with LTE, but LTE is everywhere nowdays
In this Korea Telecom ROM there is no way to configure to only use 3g (CDMA only), not even in hidden menu - this could be a remedy, but would not solve the issue
Wifi also works
I did Factory Reset twice (also Network settings reset), did not help
I waited for an update from KT, maybe contains a fix, but did not help
I went to my operator (TELENOR Hungary), and they have checked my subscription, and they said everything is ok, but they can see that my phone does not connect to the LTE system.
I tried my SIM in an other phone, and LTE works perfectly
So based on these facts, I can't think of other than the phone has a hardware issue. Do you have any idea how can I investigate further?
Thanks for any suggestion.

pepejazz said:
Hi All,
I bought this LG G6 (G600K) from HK a month ago. It was working perfectly until few days ago when the LTE stopped working. In the notification bar I can see LTE, but there is no data going through. E.g.: messenger shows "Connecting...". Basically no 4G internet any more. So I did my research and these are my findings:
If there is no LTE coverage, the phone switches to 3g and it works - so the problem is only with LTE, but LTE is everywhere nowdays
In this Korea Telecom ROM there is no way to configure to only use 3g (CDMA only), not even in hidden menu - this could be a remedy, but would not solve the issue
Wifi also works
I did Factory Reset twice (also Network settings reset), did not help
I waited for an update from KT, maybe contains a fix, but did not help
I went to my operator (TELENOR Hungary), and they have checked my subscription, and they said everything is ok, but they can see that my phone does not connect to the LTE system.
I tried my SIM in an other phone, and LTE works perfectly
So based on these facts, I can't think of other than the phone has a hardware issue. Do you have any idea how can I investigate further?
Thanks for any suggestion.
Click to expand...
Click to collapse
Have you made sure data roaming is turned on as you have Korean model, I had to enable data roaming to get mobile data as the device thinks that's exactly what it's doing.
Sent from my LG-H870 using Tapatalk

nookcoloruser said:
Have you made sure data roaming is turned on as you have Korean model, I had to enable data roaming to get mobile data as the device thinks that's exactly what it's doing.
Click to expand...
Click to collapse
Unfortunately it is grayed out. But 3g works and 4g worked before. I have not changed any settings, just went away.

---------- Post added at 09:11 AM ---------- Previous post was at 09:06 AM ----------
[/COLOR]
pepejazz said:
Unfortunately it is grayed out. But 3g works and 4g worked before. I have not changed any settings, just went away.
Click to expand...
Click to collapse
Did you fix the problem yet?? I also have same situation like you.........

Hi, sorry to hear. I could not solve yet. I went to the 3rd line support of the operator, but they say everything is fine from their side. So I'm waiting for a custom ROM, or I will change my operator. If you can, send back your phone.

pepejazz said:
Hi, sorry to hear. I could not solve yet. I went to the 3rd line support of the operator, but they say everything is fine from their side. So I'm waiting for a custom ROM, or I will change my operator. If you can, send back your phone.
Click to expand...
Click to collapse
Well i just found temporary fix for grayed out data roaming..this method worked to me
download quickshortcutmaker from playstore open app and switch to normal search find roaming click on roaming - global roaming - create... you can enable data roaming from there..
And for manual network switch LTE /3G : quickshortcutmaker - normal view - network -networksettings global
Hope that helps
Sorry for my bad English..

Wow, thanks. This is working as a remedy. You are the hero of the day

Found the solution !
Google Search : how to fix 3g/4g high on android
(can't put a link since this is my first comment)
Its something related to APN . I've tried it and it works .
Hope this helps . Cheers

Xiaomi Mi A1 big network issues

Hi everyone, I own this nice terminal, but I have a big problem. When I use the 2g network, since I'm in Italy and in 4g cannot receive calls, the phone has a very low signal and remains completely absent very often. I have the same problem when 4g makes the switch in 3g. Sometimes to recover the signal I have to turn the airplane on and off. It's normal? And does anyone have the same problem or can he help me? Is this a hardware problem? With a Xiaomi Redmi Note 3 Pro in I own these problems do not occur, so I rule out the problems of my network operator.

cdtech said:
Hi everyone, I own this nice terminal, but I have a big problem. When I use the 2g network, since I'm in Italy and in 4g cannot receive calls, the phone has a very low signal and remains completely absent very often. I have the same problem when 4g makes the switch in 3g. Sometimes to recover the signal I have to turn the airplane on and off. It's normal? And does anyone have the same problem or can he help me? Is this a hardware problem? With a Xiaomi Redmi Note 3 Pro in I own these problems do not occur, so I rule out the problems of my network operator.
Click to expand...
Click to collapse
Noticing similar issues here after the last 2 updates . My posts on the MI forum are being delted by the silly moderator

vkk178 said:
Noticing similar issues here after the last 2 updates . My posts on the MI forum are being delted by the silly moderator
Click to expand...
Click to collapse
Also noticing issues with Chromecast .It fails to detect Chromecast and need to toggle airplane mode

With the 7.10.14 i didn't noticed this.
Chromecast works perfectly, also i'm not facing problem with 2/3/4G signal.
Wifi is not that great however.
I'm not going to upgrade to latest version until they don't fix this problem.

cdtech said:
Hi everyone, I own this nice terminal, but I have a big problem. When I use the 2g network, since I'm in Italy and in 4g cannot receive calls, the phone has a very low signal and remains completely absent very often. I have the same problem when 4g makes the switch in 3g. Sometimes to recover the signal I have to turn the airplane on and off. It's normal? And does anyone have the same problem or can he help me? Is this a hardware problem? With a Xiaomi Redmi Note 3 Pro in I own these problems do not occur, so I rule out the problems of my network operator.
Click to expand...
Click to collapse
I'm in italy too but the modem, so far, worked really well for me.
I'm using vodafone and when receiving calls the signal switches back to 3g (very rarely 2g) but never faced any issue. After the call ends the phone switches back again to 3/4g in a few seconds.

fedemene said:
I'm in italy too but the modem, so far, worked really well for me.
I'm using vodafone and when receiving calls the signal switches back to 3g (very rarely 2g) but never faced any issue. After the call ends the phone switches back again to 3/4g in a few seconds.
Click to expand...
Click to collapse
I used Tim,maybe it's the problem or my phone have broken antennas.