yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Edge Questions and Answers] Acidss:
Hi guys, have anyone having issue with your S7's mobile data signal? I get network lost and my S7 shows No service and emergency calls only randomly and it happens for few times a day. I see some but not many post on google about this issue without any solution yet. Wondering if anyone found a fix for this? Should i wait for a software fix or it is hardware issue?

The only temporary fix i have for this is rebooting the phone or take off and reinsert the simcard.
[Samsung Galaxy S7 Edge Questions and Answers] Mufrad:
Flash stock rom with odin and check if it persists, otherwise more detailed investigation is necessary on your part to figure out if it is a sofware or hardware problem.
[Samsung Galaxy S7 Edge Questions and Answers] visitor29:
did you fixed?

i have similar problem on s7, one day no network at all only emergency calls only on 3 ireland, but on others network like vodofone or meteor works all good.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
samsung fault a software fix is coming here it is :

http://www.sammobile.com/2016/05/21...s7-edge-get-an-update-with-various-bug-fixes/
[Samsung Galaxy S7 Edge Questions and Answers] Acidss:
it doesnt say anything about network carrier problem?

got mine working if i switch it to 2G/3G only and avoid the 4G/LTE signal and seems like i only went to 'Emergency calls only' when i mobile or roams alot.
[Samsung Galaxy S7 Edge Questions and Answers] izephyr:
Please check a few things before you decide anything about this problem.

1. Remove the SIM card and try the simcard on another device.

2. Insert a different Sim card and see if you still have the problem.

If changing sim works, possibly your sim card is faulty. You will need to contact your carrier and replace the sim card.

Then you may flash stock rom and radio with factory reset. If this does not help, I am 99% sure that your sim card slot have some problem. Contact Samsung. If you are on warranty, you will get a replacement. If not you know, $$$.

Please let us know if it is fixed.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
Hello

I have this problem with my second new samsung s7 black sm930F (SM-G930FZKAXEF) the phone works perfectly but after some 362 (*UPDATE NOW AFTER 162 HOURS )hours of function I get "emergency calls only " only phone restart or phone flight mode return to normal network mode and this bug is annoying because is a software problem ( tried everything replace nano sim several times no luck, turn data mobile off and on no luck either) the nano sim is perfectly inserted the phone works perfect but after that amount of hours when i pass areas with poor signal and go back to the ones with very good signal I have the latest update....

UPDATE * now have performed factory reset wait to see if the problem occurs again, also wait from the network operator vodafone answer

done the imei verification all good here

read this : http://www.sammobile.com/2016/05/21...s7-edge-get-an-update-with-various-bug-fixes/

"an occasional cover recognition issue has been resolved"

it's address to the signal problem or the case mate(S-view Cover / Clear cover) ? how it's understood ?

thanks
[Samsung Galaxy S7 Edge Questions and Answers] izephyr:
Thanks for the clarification. You did not mention in OP that you tried to switch SIM cards. I am also aware of this bug. Sorry that I did not pointed out in my response earlier.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
it's this the fix :

"an occasional cover recognition issue has been resolved"

it's address to the signal problem or the case mate(S-view Cover / Clear cover) ? how it's understood ?

it's Samsung aware of this i did made tickets to them :(
[Samsung Galaxy S7 Edge Questions and Answers] Darklords7edge:
same here from India

i am facing the same problem could not found any fix for it

---------- Post added at 03:17 PM ---------- Previous post was at 03:12 PM ----------

my network is Vodafone, maybe vodafone is to blame :confused:
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
same here on vodafone........
[Samsung Galaxy S7 Edge Questions and Answers] vroshan96:
Its not the network its the 1st August Security update(India) is what creating issue whoever has updated. If you try downgrading the update to previous version that should work fine or however can wait till you get September Security patch update hopefully that issue will get rectified.

---------- Post added at 03:38 PM ---------- Previous post was at 03:35 PM ----------

Its not the network its the 1st August Security update(India) is what creating issue whoever has updated. If you try downgrading the update to previous version that should work fine or however can wait till you get September Security patch update hopefully that issue will get rectified.

---------- Post added at 03:40 PM ---------- Previous post was at 03:38 PM ----------

Its not the network its the 1st August Security update(India) is what creating issue whoever has updated. If you try downgrading the update to previous version that should work fine or however can wait till you get September Security patch update hopefully that issue will get rectified.:good:
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
i think it's Samsung fault they did not care for releasing a fix for this.....i have read people changing 3 phone and the problem it's still there.....so SAMSUNG MUST FIX THIS ANNOYING BUG
[Samsung Galaxy S7 Edge Questions and Answers] vroshan96:
Should have but ...may fix it in next update which is gonna be rolled out first week of September..
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
what proof do you have if they will release an update on september ??? or where did you heard of this ???
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
i can cofirm this bug "emergency call only" .....HOPE THAT WITH THIS UPDATE SAMSUNG WILL FIX THIS CRAP........
[Samsung Galaxy S7 Edge Questions and Answers] vroshan96:
http://www.youmobile.org/blogs/entr...adByoApp?rid=75858']XDA-Developers mobile app
[Samsung Galaxy S7 Edge Questions and Answers] vroshan96:
View attachment 3867185
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
yes this I know but what about the emergency call only ?
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Hi all,

I can confirm that I too am facing this issue here in India. It has started after the last update that I installed in August. I now am on Build number MMB29K.G935FXXU1BPH7 dated 9-Aug-2016 with Security Patch Level date 1-Aug-2016.

I was on Vodafone when I first observed this issue. A week later I ported my number into Airtel and the problem still persists. I have changed my SIM card also on Airtel and the problem still remains.

So this is a software issue as

1. it has started after the last software update installed in Aug.

2. faced the issue on Vodafone network.

3. faced the issue on Airtel network (SIM change also done).

Hopefully Smasung fixes this annoying bug soon.

Alternately, the previous firmware G935FXXU1APGF could be downloaded from http://www.sammobile.com/firmwares/database/SM-G935FD/ and flashed using Odin.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
This is my new second phone with this annoying bug hope that Samsung will fix this
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
You can download the previous firmware G935FXXU1APGF from http://www.sammobile.com/firmwares/database/SM-G935FD/ and flash using Odin.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
I'm on this G930FXXU1BPHJ, yesterday has arrived, we see how this goes.....
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Great. Pls keep us posted on the results after you have updated.

In the meantime, I shall be flashing back to the previous version available for India till they release the next one here. I simply cannot afford my mobile to be out of reach as it is my official one.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
yes i will keep you in touch :)
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
did you try reflashing your software with odin ?? maybe this will solve the problem....I did not try
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Hi yes I did. And i got stuck in a boot loop. A bad one. I couldn't switch off the phone or boot into recovery for quite some time. Later, i connected it to my computer, pressed both the volume keys and power button at the same time and then it finally switched off and I could restart it in Download mode. I flashed the ROM a second time using Odin but same result. So I finally took it to my local Samsung service center and they (thankfully) flashed the firmware and got it up and running in 3-4 hours.

I am however back on the latest build (security patch level 1-Aug-2016) and am quite sure the 'not registered on network' error will come up today as the 4g signal fluctuates a lot in my office premises. It did not occur yesterday as I was at home most of the day and the network reception there is pretty stable.

UPDATE ON THIS: The 'not registered on network' error has occurred when I was in my office which has very weak 4g reception. I have now switched the mode to 3g/2g only and am monitoring.

What about you? Did you face the error yet on the latest update that you have downloaded?
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
i did not flash with odin my samsung s7....only update from offcial samsung ota......all good but no with the september update hope the problem is fixed time will tell if this is it....
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
So there's still no update available here in India. I am living with this 'not registered on mobile network' error which does come up intermittently. It's very annoying. Samsung, FIX IT YESTERDAY!!!!!!!!!!!!!
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
This is my last build G930FXXU1BPHJ hope that is fixing for good this annoying problem......in the past after 362 hours of uptime had this problem after the july update after 800 hours......now i'm waiting to see if i can pass those hours without this bug....my current update is 150 hours all good for now no problems.......but let's see after those hours...keep you up to date........do you have the unlocked version of s7 ?? or ??
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
I have an unlocked version of the S7 edge.

Also, while I wait for the official update from Samsung that fixes this bug, what I have done is switched the 'Network Selection mode' to 'Manual'. After that, so far I have not got the 'Not registered on network' error even though I have been on 4g network. It's been about 24+ hours now. Earlier I was getting the error within 24 hours when my 'Network selection mode' was set to 'Automatic' and I was on 4g network.

I'm keeping a watch on it.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
you cannot set it to manual forever only once as you perform the search then you select manual the network...voila...after this it will be automatically ..........please share print screen of s7 ho did you set to manual
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Hey. I didn't fully understand your post above. However, to set the network to manual you have to go to the following options in your S7 edge: Settings->Mobile Networks->Network Operators->Search networks.

After you click the 'Search networks' option, the phone will take a few minutes and show a list of all the available mobile networks. Once that's done, simply click/select your network and it will show the message 'Registered on network'. After this, it will stop automatically searching for other networks. The only problem with this is that when you are roaming, and your home network is unavailable, the phone will not automatically latch on to another network. You may have to manually select that.

---------- Post added at 06:44 PM ---------- Previous post was at 06:39 PM ----------

As an update on this, I can confirm that after setting the Network Selection mode to Manual, I have NOT faced the 'Not registered on network' error. It has been one and a half days now and I have been in areas of my office with very poor 4g network coverage. Earlier, with the Network Selection mode set to Auto, I used to get this error at least once within 12-24 hours especially in my office premises since the 4g coverage there is very bad.

Now until Samsung releases the next update, I am stuck on the BH7 build with the 1-Aug-2016 Security Patch and this Manual Network Mode setting. But it is a relief from dropping out of network multiple times in a day and having your phone on but 'unreachable' and that too without knowing this till you attempt to make an out-going call.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
you can set manually only once...after that it will be set to automatically...if you not belive make a test in a area where you don't have signal.....you will see that when you reach good signal the phone will search automatically for signal....
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Well the manual network selection mode means that the phone will stick to the network that is chosen manually by the user.

If that network has low signal (eg. 4g signal is very low or not there in some area), the phone will scan for an alternate better/stronger signal (eg. 3g/2g) but this will be done on the SAME NETWORK ONLY and if this is found, it will latch on to it.

In case it doesn't find a better/stronger signal, it throws a message that says 'selected network is not available' and at this point the phone will be out of reach for anyone trying to call you.

So the point is - the Network Selection Mode ties you down to the one mobile network (Airtel in my case) you have manually chosen. It will still continue to search and switch between 2g-3g-4g but this will be done on that one mobile network (Airtel in my case) only.
[Samsung Galaxy S7 Edge Questions and Answers] necao:
First sorry for bad English. I bought an g935f and will take it to my country Nicaragua. But when I insert my country's Sim it shows emergency calls only. So I tried an t-mobile Sim and same thing. It is supposed to be ano unlocked phone. I was cheking the CSC and there is none from USA should this be a problem and maybe the phone will work in my country. I know it's hard to tell. So...should I send it back to seller and ask for a new one. If I do I will receive the phone in about 2 months when a relative travel to my country.

Cheers and thanks in advance.

Necao
[Samsung Galaxy S7 Edge Questions and Answers] henklbr:
I think this has to do with the REGION-lock! You've to call first 5 minutes with an EUROPEAN-SIM, after that, you can use your own SIM!
[Samsung Galaxy S7 Edge Questions and Answers] necao:
Can I use the European Sim outside Europe in roaming?

It does recognizes the Sim, it shows the Sim app. I will see about the Region lock....

Thanks
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Hi all.

As I had mentioned earlier, I had set the network selection mode to 'Manually select network' and after that I had stopped receiving the 'Not registered on mobile network' error.

However, yesterday I went to the Settings->Backup and reset->Reset network settings option and reset all my network settings. After this, so far I have not faced the 'Not registered on mobile network' error even though I am in office where the 4g and general mobile network reception is pretty bad.

I am observing and shall keep you all updated on the results. If this works, then we can just 'Reset network settings' and avoid setting the 'Network selection mode' to 'Manual' thereby leaving it set to 'Automatically select network' which is always set by default in new phones.
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Following is an observation.

After doing the 'Network settings reset' yesterday, the 'not registered on mobile network' did just pop up a few minutes back. This was as I had moved in and out of an area (in my office) with particularly bad mobile network reception (the restroom :) ). I noticed that the data connection had stopped and then when I tried to make a call, the error came up.

However, the difference I noticed is that this time, the error went away on it's own. What I mean is that within 20-30 seconds of entering an area with mobile network reception, my phone automatically latched on to the mobile signal and registered on it. After that, data and calls became operational again.

I did not have to restart phone or even enable-disable the Flight Mode which I had to always do earlier whenever this error came.

So I believe that the Network Settings Reset has helped after all. I suggest you give it a shot too.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
no effect Network Settings Reset or total reset......only the fix from will do it ........so far so good 250 hours up time hope to pass 800 with no problems...
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Well for me the Network Settings Reset is working great. I need not spend any more sleepless nights waiting for an update from Samsung.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
let's if your phone works the same after the 365 hours...and then the 800 hours.......we will see
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
As an update for everyone, after doing the "Network Settings Reset" on 15-Sep-16, it has been smooth sailing for me. I have not got the 'Not registered on mobile network' error and my phone has been working and reachable (calls, sms, 2g/3g/4g mobile data) at all times. No manual intervention (restart, flight mode on-off, etc.) needed.

I strongly recommend you try the "Network Settings Reset" option in case you are facing the 'Not registered on mobile network' error.
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
What is your up time of your s7 ??? let's see it after 800 hours....
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Well you got to see the problem and solution in its entirety as opposed to looking at a particular up-time hour count.

Earlier, I was facing the error every few hours (4 - 12 hrs) and especially more so in my office. Now, I am not facing the error at all since 2-3 days.

So for me it is a definite improvement and a big relief, even if I do not make the 800 mark that you are looking for.
[Samsung Galaxy S7 Edge Questions and Answers] r4z3r666:
I have a similar problem too - emergency calls only, nothing of the described above helps (also flashed latest open austria stock fw)

Replaced my simcard TWICE today. it's weird because even other simcards of my operator work in my phone (Three Austria) and my card works in other phones.

It's just MY CARD doesn't work with MY PHONE...
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
can you give more details I cannot understand you........
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
As I understand, when you say "It's just my card that doesn't work with my phone", it means that only your particular SIM/mobile number is not working your S7 Edge handset but other SIMs/mobile numbers work on it. Is this correct?

You probably need to visit your mobile service provider and they should be able to help you. Also, have you tried to manually search your network and register on it?
[Samsung Galaxy S7 Edge Questions and Answers] r4z3r666:
basically yes.

1. My sim card (three Austria) is not working on my S7E

2. My sim card is working on other handsets

3. My GFs sim card (three Austria) is working on my S7E

4. My other sim card (t-mobile Austria) is working on my S7E

5. one other sim card from a virtual operator using three Austria's network is not working on my S7E

--> what the two sim cards not working on my S7E have in common? - they both use three Austria's 3G network (but my GF's sim is using the same network too and it does work)

- I flashed full latest stock - it didn't help

- I flashed latest three Austria's branded fw - it didn't help

- soft-, hardresets, network setting resets, API changes didn't help

- manual network selection didn't work (I get a: "can't register to network")

- I've been to a three shop - they checked the IMEI, locked & unlocked my number, replaced my sim card twice - it all didn't help :(
[Samsung Galaxy S7 Edge Questions and Answers] MirceaForce:
Did you have the unlocked version of the phone??? did you try to reinsert multiple times in the nano slot ??? i suggest to go to your operator and request for a sim and test it there until it works.......
[Samsung Galaxy S7 Edge Questions and Answers] r4z3r666:
Yes it's unlocked - and my sim card used to work too (for a week before this hoax started)

I also tried to reinsert it multiple times, and as I said before I already replaced the sim card twice - I'll go to a Samsung store today cause I'm running out of ideas

EDIT:

I've been to a samsung store today - they just got a phone with the same problem the other day and their solution is to replace the mainboard - they are waiting for the replacement mainboard to check it now (unfortunately my phone is kies triggered - so no samsung warranty repair for me)

we also checked other operator's sim cards and all the other work well.

EDIT:

I also realized my GF's sim card (three Austria) is working only if I switch to LTE (not on 3G/2G)

(My data plan doesn't have LTE so I'm screwed here)

so a short recap of all operator's sim cards I've tried so far

-3 Austria sim - works only on LTE (can't register to 3g or 2g network)

-T-Mobile Austria - works with 3g (didn't try 2g)

-A1 Austria - works with 3g (didn't try 2g)

-Telering Austria - works with 3g (didn't try 2g)

-T-Mobile Poland - works with 3g (didn't try 2g)
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
Yes. This is something I expected that is a fault with your handset, as rare as it may be. I once purchased a brand new Sony Xperia handset and it worked fine on all networks (Airtel, Idea, etc.), bands (2G, 3G) and SIMs except for working on Vodafone 3G network.

Even the services center nailed it after a few days of testing, firmware flashing, etc. They inserted Airtel sim and it worked fine on 2g and 3g. They inserted an Idea sim and it worked fine on 2g and 3g. However, when they inserted a Vodafone sim, it worked fine on 2g but NOT on 3g.

Imagine the odds. Anyone that used a non-Vodafone sim (or a Vodafone 2g only sim) would never even know that such a problem existed. I coincidentally was using Vodafone 3g and took the issue to them.

They gave me a replacement in a week's time.

I think you need to get your handset replaced. Also, to prove things to someone who doesn't cooperate, you could insert your sim card in another Samsung Galaxy S7 Edge mobile and show them it works. Which means the issue is with your handset.

Also, what do you mean by saying "(unfortunately my phone is kies triggered - so no samsung warranty repair for me)"? I didn't understand this line.
[Samsung Galaxy S7 Edge Questions and Answers] r4z3r666:
srry, I meant KNOX - It's been a long day.

The phone was rooted.

Damn, that's all crazy
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
If the KNOX flag has been triggered then there's no way to reset that. Knox enabled + root is not a good combination in my view. Hope it somehow works out for you....All the best.
[Samsung Galaxy S7 Edge Questions and Answers] r4z3r666:
thx - I'll just get rid of it and wait for a non-exploding Note 7 ^^
[Samsung Galaxy S7 Edge Questions and Answers] sameer_tangri:
An alternate available to you (only in case Mobile Number Portability is available in your region) is that you port your number to another mobile service provider. That way you would be able to still retain your mobile number and the new operator's SIM just might work with your S7 Edge (as it's a different mobile network).