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?

WCDMA only note 3 no signal

i have a note 3 but i dont have signal for 3 g and H+ just E ,I switch in WCDMA only than i have no signal bar and normal no 3G thanks for helping
Nore 3 unlocked
haved other software AUSTRIAN now
South East Europe (unlocked) – N9005XXUENB4_N9005OXXENB1_SEE.zip
this installet but some problem ..

Type *#06# in keyboard, note down imei number & match with imei number under battery. This will comform your mobile is not modified threw flashing Super imei which makes network problems.
Sent from my SM-N9005 using XDA Free mobile app

jdomadia said:
Type *#06# in keyboard, note down imei number & match with imei number under battery. This will comform your mobile is not modified threw flashing Super imei which makes network problems.
Sent from my SM-N9005 using XDA Free mobile app
Click to expand...
Click to collapse
NO ITS NOT I HAVE CHANGET 1 TIME MATHERBOARD HAVET THAN NO REGISTRY NETWOR BUT NO I DONT HAVE THIS PROB JUST NOT WORKING 3G and H+ signal bar in WCDMA but in others gsm only i have signal with E
PS: I HAVE NOTE 3 LTE N9005 maybe dont have h+ and 3g or what its prob i dont know

darkman24 said:
NO ITS NOT I HAVE CHANGET 1 TIME MATHERBOARD HAVET THAN NO REGISTRY NETWOR BUT NO I DONT HAVE THIS PROB JUST NOT WORKING 3G and H+ signal bar in WCDMA but in others gsm only i have signal with E
PS: I HAVE NOTE 3 LTE N9005 maybe dont have h+ and perfect or what its prob i dont know
Click to expand...
Click to collapse
i think depend on your network ,i m in UK i use O2-UK sim card and i never see 3g but 4g and h+ yes.if i use 3-UK sim it will show 4G or 3G or H .

I dont know why in WCDMA only no signal bar in others just E mayve hardwer probl thats i want to know or maybe Note 3 LTE N9005 Not have 3g and H+ pleas if anyone have any solution help i have change software before i have scaned i have see t-mobile 4g t-mobile 2g no i just see the name of t-mobile in LTE/EVDMA/GSM

any solution help

What model was your phone originally and is the new motherboard also for same model? Seems like 3G bands do not match there.

YESS ITIS Note 3 N9005 LTE now i have testet 3 card in this phon i add WCDMA than i dont have signal bar

There is no way to fix it yourself. I had the exact same problem. had to fix it from a shop they have SPT box to fix it. you can do it yourself if you can order it from amazon probably 216 bucks
Just take it to a shop mate.

thanks all i have send it

LTE seems to be out of service ?

Hi,
I will try to explain my problem in my best english lol
The LTE connection of my NOTE 3 seems to be KO.
I choose the LTE connections in settings with good APN.
So i did crossed tests :
1 / I never get the LTE Connection. I only get H+ (Dual Carrier). If i put my SIM Card on an other phone, LTE Works.
2 / My wife get LTE on her phone with her card. If i put, her SIMcard, in my Note, LTE doesnt work too, only H+ (Dual Carrier)
Do you think it's an hardware issue ? Is there something else to check ?
Thanks
Ps : Note 3 totally stock, never rooted, flashed

fredbull said:
Hi,
I will try to explain my problem in my best english lol
The LTE connection of my NOTE 3 seems to be KO.
I choose the LTE connections in settings with good APN.
So i did crossed tests :
1 / I never get the LTE Connection. I only get H+ (Dual Carrier). If i put my SIM Card on an other phone, LTE Works.
2 / My wife get LTE on her phone with her card. If i put, her SIMcard, in my Note, LTE doesnt work too, only H+ (Dual Carrier)
Do you think it's an hardware issue ? Is there something else to check ?
Thanks
Ps : Note 3 totally stock, never rooted, flashed
Click to expand...
Click to collapse
Do you and your wife have exactly the same *#1234# values? Type that in your phone dialer and compare.

She has one S4 Mini and i have Note 3, so we dont have the same values.

fredbull said:
She has one S4 Mini and i have Note 3, so we dont have the same values.
Click to expand...
Click to collapse
Were they both purchased in the same region?

No me in XEF et her in DBT. But it could change the network sensibility so hard ?

fredbull said:
No me in XEF et her in DBT. But it could change the network sensibility so hard ?
Click to expand...
Click to collapse
If you can flash it to DBT region you could get better signal.
Remember to backup your /efs first using TWRP.

Yes but the problem is that i catch LTE nowhere

fredbull said:
Yes but the problem is that i catch LTE nowhere
Click to expand...
Click to collapse
With a different modem, you could catch more signals.
"could".

N900S GPRS EDGE Problem

Hi guys,
I just bought a Note 3 (N900S SK Telecom) from Korea which will be used by me in India. I have observed that I get a G icon when i am in 2G mode which should be generally as E (EDGE). The speeds in G are drastically low when compared to E and i get about 2 KB/Sec browsing speed which is absolutely horrendous. Now when i have 3G Reception, i get a maximum of 3 mbps whereas i used to get 7.2 mbps constant in my Note 2. I also get a 3G icon in the top instead of H or H+.
Is there any possible to way to get EDGE and H or H+ speeds in my N900S ?? WIll changing of modems or flashing any other ROM will help?

Anybody knows how to sort out this problem?

ronak_143 said:
Hi guys,
I just bought a Note 3 (N900S SK Telecom) from Korea which will be used by me in India. I have observed that I get a G icon when i am in 2G mode which should be generally as E (EDGE). The speeds in G are drastically low when compared to E and i get about 2 KB/Sec browsing speed which is absolutely horrendous. Now when i have 3G Reception, i get a maximum of 3 mbps whereas i used to get 7.2 mbps constant in my Note 2. I also get a 3G icon in the top instead of H or H+.
Is there any possible to way to get EDGE and H or H+ speeds in my N900S ?? WIll changing of modems or flashing any other ROM will help?
Click to expand...
Click to collapse
Do you use the same SIM and in the same location as when you used your Note 2?
I don't think it's the problem with modem. Most likely it is the problem of the mobile network.
Please follow these steps and show the screenshot: open Dialer, enter *#0011#, Menu, Back menu item, Menu, Key Input, enter Q0 and wait for some seconds...
Then select DEBUG SCREEN > NAS INFORMATION > GMM REJECT CAUSE. Capture screenshot and post it here.
And also check the FIRMWARE INFO section in the Phone INFO ★Samsung★ app.

vndnguyen said:
Do you use the same SIM and in the same location as when you used your Note 2?
I don't think it's the problem with modem. Most likely it is the problem of the mobile network.
Please follow these steps and show the screenshot: open Dialer, enter *#0011#, Menu, Back menu item, Menu, Key Input, enter Q0 and wait for some seconds...
Then select DEBUG SCREEN > NAS INFORMATION > GMM REJECT CAUSE. Capture screenshot and post it here.
And also check the FIRMWARE INFO section in the Phone INFO ★Samsung★ app.
Click to expand...
Click to collapse
Here you go. I use Local Network of India and it is not a network issue as my other phones gives a EDGE network support

So if that phone has an unlocked bootloader and all those, why not just flash a different ROM? The latest Hong Kong one for example? Damn that screenshot has hard coded Korean language written!
Damn ignore my comment, didn't notice the model number is N900S!

ronak_143 said:
Here you go. I use Local Network of India and it is not a network issue as my other phones gives a EDGE network support
Click to expand...
Click to collapse
Looks like all info are normal. Should be a network issue. Or please check your APN settings and make sure all parameters are correct?

vndnguyen said:
Looks like all info are normal. Should be a network issue. Or please check your APN settings and make sure all parameters are correct?
Click to expand...
Click to collapse
They settings are perfect. Are there any compatible modems or roms?

vndnguyen said:
Looks like all info are normal. Should be a network issue. Or please check your APN settings and make sure all parameters are correct?
Click to expand...
Click to collapse
I've used Korean S2, S3 and all had same problems. Korean S2 was able to convert to International S2 and that gave me EDGE Connection whereas there was no work around for S3 and now Note 3. Can this phone be installed with some other modem which will give me EDGE?
will n9005 roms be compatible?

ronak_143 said:
I've used Korean S2, S3 and all had same problems. Korean S2 was able to convert to International S2 and that gave me EDGE Connection whereas there was no work around for S3 and now Note 3. Can this phone be installed with some other modem which will give me EDGE?
will n9005 roms be compatible?
Click to expand...
Click to collapse
AFAIK there are several custom roms for N900S. You can google it.

vndnguyen said:
AFAIK there are several custom roms for N900S. You can google it.
Click to expand...
Click to collapse
I am just looking to remain stock and was just concerned with this network related issue. How do i solve this now!?

S5 SM-G906L network settings

Hey everyone ..
I've bought lately S5 (SM-G906L) the Korean version because of the perfect specification that it has ..
i had an S4 before it and i was used to see the H+ icon when i use the data network on it but after i bought the s5 its always 3G .
i tried to change the settings in my phone but never could and i live in Turkey btw so thats mean there is no 4G network here ..
can anyone help to change it to H+ cause i read that its faster and better than the normal 3G network or at least its enough to me to learn the reason of all of that
and also there is another problem I've just discovered which is i cant use the video call from this device whereas i could use it from my sim card on my friend's phone Note 4

Katkoot_cena said:
Hey everyone ..
I've bought lately S5 (SM-G906L) the Korean version because of the perfect specification that it has ..
i had an S4 before it and i was used to see the H+ icon when i use the data network on it but after i bought the s5 its always 3G .
i tried to change the settings in my phone but never could and i live in Turkey btw so thats mean there is no 4G network here ..
can anyone help to change it to H+ cause i read that its faster and better than the normal 3G network or at least its enough to me to learn the reason of all of that
and also there is another problem I've just discovered which is i cant use the video call from this device whereas i could use it from my sim card on my friend's phone Note 4
Click to expand...
Click to collapse
Changing the icon won't give you better or faster data, silly.
H+ = 3G+. That's it. It's probably showing you a 3G icon (it's the same thing lol) while actually using H+ since it's a korean phone. Check with your operator what speeds they have for H+/3G+ and do a speedtest to see if you're on H+ or not.

And what about video calls ? Do u have any idea ?
Sent from my SM-G906L using XDA Free mobile app