Database Users

[Q] No gsm signal sgs2.

I have been using the fone for 3 weeks and now it lost gsm signal. Gps, wifi working fine. It is simlock free, firmware upgraded to latest, few factory resets still no luck. The signal icon shows normal signal but when you trying to ring it tell " mobile network not available" Many sim cards checked - nothing Is there any trick?
thank you

qwojtus said:
I have been using the fone for 3 weeks and now it lost gsm signal. Gps, wifi working fine. It is simlock free, firmware upgraded to latest, few factory resets still no luck. The signal icon shows normal signal but when you trying to ring it tell " mobile network not available" Many sim cards checked - nothing Is there any trick?
thank you
Click to expand...
Click to collapse
what was the last thing u did to the phone before it started to lose signal

I did nothing am basic usher. No dropped, no experiments. Two days ego wake up and i cant ring.

Firmware upgrade official via Kies .??? Or Samsung stock firmware via Odin .
Correct CSC in phone for your country likewise correct modem.
jje

It happened before upgrade, after upgrade no changes i did it via kies samsung stock firmware. I bought it in England i live in England. What that is CSC ?

Check with your network to see if the IMEI has been blocked. I've had this happen - it was an error on the networks part.
EDIT: ...I say network, but it was the the third party that provides the block list that really made the mistake (it was blocked on all networks for 2 weeks!)

qwojtus said:
It happened before upgrade, after upgrade no changes i did it via kies samsung stock firmware. I bought it in England i live in England. What that is CSC ?
Click to expand...
Click to collapse
CSC = country specific codes . dial *#1234#
I would return to seller .
jje

Emergency Calls Only

Hi All,
Got a GS4 i9505 originally locked to Vodafone, had to downgrade modem firmware to unlock to all networks - put in a Three sim - gives me signal but for emergency calls only - No data, no texts and no calls.
upgraded the modem firmware again - no change.
But a stock rom on - No change
Rooted and put a custom rom on - no change.
Tried a different sim (EE) and doesnt give any signal.
Everything now points to the IMEI being blocked right - Nope, checked that and its not blocked.
So im stuck, any ideas?
Thanks all

Where did you get the phone from? New or used? What firmware where you on and what are you on now?
Sent from my GT-I9505 using XDA Premium 4 mobile app

OP, what country are you in?
The reason I ask is there is no such thing as three in Australia any more, it was closed down on the 31st august.
Sent from my GT-I9505 using xda app-developers app

Having the same issue here. I have tried everything possible but for putting any other ROM on as i will be asking for a full refund if it persists
wizkid005 said:
Hi All,
Got a GS4 i9505 originally locked to Vodafone, had to downgrade modem firmware to unlock to all networks - put in a Three sim - gives me signal but for emergency calls only - No data, no texts and no calls.
upgraded the modem firmware again - no change.
But a stock rom on - No change
Rooted and put a custom rom on - no change.
Tried a different sim (EE) and doesnt give any signal.
Everything now points to the IMEI being blocked right - Nope, checked that and its not blocked.
So im stuck, any ideas?
Thanks all
Click to expand...
Click to collapse

modem problems...
u need to visit Service Center :sly:
Send my E-960/S4 LTE/N2 GSM and /Galaxy Y to xda

Thanks for the replies.
The phone is second hand - apparently it was "unlocked" for 3 when i got it - even though it had a Vodafone bloatware rom on it.
Im from UK - :/ but thanks for the suggestion.
Its on 4.2.2 - stock rom - it was on a custom rom (not sure what though)
When you say Modem, do you mean the hardware or software?
If it is the modem, how would the 3 sim get signal but an EE sim wont?
Thanks

[Q] SM-N910C LTE not working in UK

Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!

KK2244 said:
Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!
Click to expand...
Click to collapse
There's recent update for dubai region, u can update & try may they resolved this problem. R u sure your Service provider supporting 4g for your sim?

jdomadia said:
There's recent update for dubai region, u can update & try may they resolved this problem. R u sure your Service provider supporting 4g for your sim?
Click to expand...
Click to collapse
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.

KK2244 said:
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.
Click to expand...
Click to collapse
Download Samsung phone info from play store, check your region, also you can check knox warranty is void? U can also check refurbishment check from same app, seems to me u purchased online, not from authorised store of dubai.

KK2244 said:
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.
Click to expand...
Click to collapse
This are the mine screen shot for dubai rom, u can compare.

Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?

KK2244 said:
Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?
Click to expand...
Click to collapse
Yes root is not required to flash U.A.E firmware, u will get all as mine, u need to clear cache & data before & after flashing through odin.
---------- Post added at 02:05 PM ---------- Previous post was at 02:02 PM ----------
KK2244 said:
Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?
Click to expand...
Click to collapse
Before u flash first match your imei dial *#1234# & under battery.

KK2244 said:
Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!
Click to expand...
Click to collapse
my friends have this similar problem and its fix
This is how "you need a working sim from the country when you buy the samsung phone"
all you have to do is make a international call for 15 minutes to the original country
example u bought the phone in egypt so u need a working egypt simcard just call the operator in egypt and listen to the operator for 15 minuts from UK after 15 minutes (make it 20 minutes just in case) turn off your phone and change it with the UK sim card
this method works for me
u dont need to flash or root the phone
just remember this method only work with samsung unlock phones from middle east

Do different official I9505 firmwares have different modems?

I am currently studying in China and a friend of mine from France came back after the last holiday with a GS4 I9505 from home. Apparently she was having trouble getting it to work on Chinese networks, so she took it into some place to have them fix it. Apparently they rooted it, changed the ROM and did who knows what else. After that, she said the phone not only wouldn't connect, but it was also very unstable, crashing constantly. I told her I have a GS4 (I have the I9505G) and could help her restore her phone. She wanted the regular stock Samsung software, no root or anything. So I used Sammobile.com to download a French (NRJ) version of the 5.0.1 firmware and flashed it to the phone. It appeared to work well, but when I put my China Unicom SIM in it, it would only connect to 2G. On my I9505G with stock 5.0, 3G connects without any problems. According to the Wikipedia GS4 page, the 3G frequencies used by the China Unicom variant are also used by the I9505 and I9505G. So when using the same SIM, I assume they should both have access to 3G. Would the French firmware be interfering with this? Do different firmwares have different modems that would be affecting this?
At the very least, I was able to restore the phone and get it to connect to 2G, but if I can completely fix the phone for her, I think that would be preferable. Any advice or shared knowledge about this issue is much appreciated.

i have S4 three UK version and i downloaded uk lollipop with different csc and pda and modem, but still it works like a charm

N9108V - Note 4 for China Mobile version. 3G and LTE not working in Europe (Greece)

Hello everyone,
A Note 4 N9108V end up to my hands, but after using it i realised it cannot properly operate in my network.
It is a snapdragon variant, single-sim version for China Mobile, has lot of Chinese stuff totally useless if you are outside China and does not have Google apps also.
I manage to root the device, install custom CWM recovery, install a MIUI7 ROM that is quite good, install Google but still have problem with 3G coverage (and LTE ofcourse since in China LTE is different than EU)
I have 3G coverage, but if i will move to another location i will not be able to make calls, and i will also appear as unreachable if someone is calling me. Also data connection will not work. Later, it may work correctly for a while.
In GSM mode is working perfectly
I took it to a local repair center to check for hardware problem, they say that it is probably the baseband (modem) software that is designed specific for the China Mobile network, or there is a bug.
I tried all the available official ROMs and modems for this device (4.4.4, 5.0.1, 5.1.1) but nothing improved.
The only thing i manage to do is to have this amazing phone working only in GSM mode....
It is like having a Ferrari with pedals.
I am thinking if it is somehow possible to load the modem file for the EU model (N910F), and this may "unlock" the needed frequencies to operate correctly. Or even, if it possible to load the entire N910F or similar non-branded Note 4 formware to the phone, since i suppose the hardware is the same.
I tried to load this modem file and the n910F firmware with Odin but is not accepted, the procedure failed.
Any ideas, proposals etc?? (except of hammering the device, this will be my last option) :laugh:
Thanks in advance