[Q] New N900 has bad signal and "your device has been modified" update error
Hello forum,
I am in the UK using a Virgin sim and my girlfriend bought this phone new in china and flew it over to me. At the moment the signal is really bad wherever I go (the same SIM card in my old galaxy nexus had great signal in all these places) so I was wondering if there was any way to make the signal better?
Also I tried to do an update through the settings menu hoping this would sort out the signal problem and it is giving me the "your device has been modified. no updates available for this device." error even though the phone is new.
the information about the device is as follows:
when I type *#1234# I get:
AP: N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI2
In my "about device" within settings, the following is given:
Model number: SM-N900
Android version: 4.3
Baseband version: N900XXUBMI2
Kernel version: 3.4.39-1625296
[email protected]#1
Wed Sep 11 19:49:31 KST 2013
Build number: JSS15J.N900ZSUBMI5
SELinux status: Enforcing
If I reboot to recover it opens:
CWM-based Recovery v6.0.4.5
Compiled by Xiaolu(20131121)
When I try to check knox I cant see it (I go into odin mode and the top left just says the following):
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
(I now understand the N900 doesn't have knox)
Thanks for looking, any feedback at all would be much appreciated :good:
Saml91 said:
Hello forum,
I am in the UK using a Virgin sim and my girlfriend bought this phone new in china and flew it over to me. At the moment the signal is really bad wherever I go (the same SIM card in my old galaxy nexus had great signal in all these places) so I was wondering if there was any way to make the signal better?
Also I tried to do an update through the settings menu hoping this would sort out the signal problem and it is giving me the "your device has been modified. no updates available for this device." error even though the phone is new.
the information about the device is as follows:
when I type *#1234# I get:
AP: N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI2
In my "about device" within settings, the following is given:
Model number: SM-N900
Android version: 4.3
Baseband version: N900XXUBMI2
Kernel version: 3.4.39-1625296
[email protected]#1
Wed Sep 11 19:49:31 KST 2013
Build number: JSS15J.N900ZSUBMI5
SELinux status: Enforcing
If I reboot to recover it opens:
CWM-based Recovery v6.0.4.5
Compiled by Xiaolu(20131121)
When I try to check knox I cant see it (I go into odin mode and the top left just says the following):
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
(I now understand the N900 doesn't have knox)
Thanks for looking, any feedback at all would be much appreciated :good:
Click to expand...
Click to collapse
Well it looks great. At least I can be sure that your phone shouldn't be a fake. It is of Hong Kong or Taiwan origin, Exynos, running 4.3 on N900ZSUBMI5.
You have CWM Recovery, Xiaolu's port of it. Hence that device was probably rooted prior to getting it handed over to your girlfriend. KNOX is only present on the MJ and onward firmwares, and you happen to be on an MI firmware so you don't have it activated yet.
Check the section for Network/Bearer and Wireless Connectivity on this link: http://www.samsung.com/levant/consumer/mobile-phones/mobile-phones/galaxy-note/SM-N9000ZKEXSG-spec
Match it up with your country's network specifications. There's a reason why these phones don't get sold worldwide, as they aren't all compatible with every region. Also remember to set correct APN values for your country.
nicholaschum said:
Well it looks great. At least I can be sure that your phone shouldn't be a fake. It is of Hong Kong or Taiwan origin, Exynos, running 4.3 on N900ZSUBMI5.
You have CWM Recovery, Xiaolu's port of it. Hence that device was probably rooted prior to getting it handed over to your girlfriend. KNOX is only present on the MJ and onward firmwares, and you happen to be on an MI firmware so you don't have it activated yet.
Check the section for Network/Bearer and Wireless Connectivity on this link:
Match it up with your country's network specifications. There's a reason why these phones don't get sold worldwide, as they aren't all compatible with every region. Also remember to set correct APN values for your country.
Click to expand...
Click to collapse
okay thanks for your reply, I believe the frequencies virgin use are 1800MHz and 2100MHz which can both be used with this phone. The APN settings were downloaded automatically when the phone was first booted and I also manually checked them and they are correct.
Saml91 said:
okay thanks for your reply, I believe the frequencies virgin use are 1800MHz and 2100MHz which can both be used with this phone. The APN settings were downloaded automatically when the phone was first booted and I also manually checked them and they are correct.
Click to expand...
Click to collapse
What is your network switch options in Settings?
Do you have it to HSPA/GSM (auto connect) set? [Sorry if it's not exactly the same, I don't have the N900 model]
My friend pointed this out to me just before I saw your message, the options available are only wcdma/gsm hspa isn't an option. Im guessing from my limited knowledge that this is the problem, what is it I would need to do to fix this? thanks again.
Saml91 said:
My friend pointed this out to me just before I saw your message, the options available are only wcdma/gsm hspa isn't an option. Im guessing from my limited knowledge that this is the problem, what is it I would need to do to fix this? thanks again.
Click to expand...
Click to collapse
Actually, I asked my friend who has the N900, he's reporting the same as you. So no problem in that.
There must be something else that can be isolated to find what's going on. You can try to upgrade the phone to the latest modem by flashing the latest 4.4.2 ROM.
Okay, what would be the best way to flash the latest ROM? Would this be a custom ROM or is there a way to get the official one? Thanks again.
Edit: I have now tried putting Dr Ketans rom on it, telling it to use the ROMs modem, and that still didnt fix the problem. I have also tried flashing some other modems from the GSM modems collection thread but the problems persist. The symptoms are as follows:
Frequently looses signal
only ever shows the E or G symbol for mobile internet connection (whereas on my other phone with the same sim it instantly gets full signal and shows H+ or 3G)
the phone has also never been able to lock onto a GPS location it only ever shows searching for GPS in the notifications bar.
hi guys im a new android user. i bought my i9505 galaxy s4 3 weeks ago and everything is working perfectly except the mobile data. i can only connect to E/G signals with it (which doesnt really do anything because i cant even check emails). its on LTE/3G/WCDMA/GSM(automatically) setting and the APN is the correct settings with the carrier in my country(philippines). i tried my sim on a different i9505 phone and it was able to connect to 4g so i guess the carrier/sim being the problem is ruled out. i have restored to factory settings/rebooted multiple times and am still unsuccessful. the phone's IMEI is not blacklisted or banned and it is intact(dont really know what that means but it shows a long series of numbers and im not really sure its safe to post it here). My carrier also supports the frequencies listed on what the phone has. i have not installed any custom firmwares and have not re installed any official releases.
i would really appreciate it if someone can help me fix this problem. could it be a software problem or a hardware problem(praying it isn't)?
my phone specs are
GT-i9505 samsung galaxy s4
android version:4.3
baseband:i9505XXUEMJ7
kernel version: 3.4.0-1765174 [email protected]#1 tue oct15 16:14:54 KST
Build number: JSS15J.I19505XXUEMJ7
SELinux: Enforcing SEPF_GT-I9505_4.3_0010
if you need me to put any more info just tell me
Go Settings > More networks > Mobile networks > Network mode > select WCDMA
Hi All!
I am having a problem with a Galaxy S5 Duos (SM-G900FD) bought used recently. Both IMEI numbers seem legit 355206********* /01 and 355207********* /01, the only difference to the numbers printed on the back is after the slash, saying 355206********* /3 and 355207********* /1. Can this be the source of the problem? I have tried to flash different SM-G900FD firmwares with odin, but getting the same result. Factory reset numerous times. Everything works fine, but when trying to make a call I got the message: "Not registered on network" despite full bars on the notification bar. The phone even sees the operators, but cannot register on the network. Instead of the operator name there is: "Emergency calls only". Can it be, that I am not having the right modem version? It`s SSN is G900FDGSMH I am also noot sure which region is the phone from originally. Any help would highly appreciated.
i heard that there are some problems with S5 duos but
try to flash the software with the same CSC code n PDA version n CSC version, install phone infoapp from playstore if u dont know your CSC n PDDA
http://postimage.org/
Better get a replacement
Sent from my SM-G900H using XDA Free mobile app
Thanks for your reply!
As currently installed Phone info says:
Original CSC code: SER
Firmware`s CSC code: SER
Active CSC code: SER
CSC country: Russia
CSC Country ISO: RU
Product Code: SM-G900FZKVSER <- this is different to the one written on the back which is: SSN: G900FDGSMH, but I did not find a firmware for this number.
Still not registering on network tough.
@sandeeppathak007: I will try in a Samsung shop, but the Knox is 0x1 (4), so I guess the warranty is void.
Speak with your SIM provider
Or if you know it's working you can try to enable flight mode and then disabling it.
Post this on sammobile forums,they might help u to find the best software,btw yeah did u try another sim ??
or contac your service provider and see,as i heard there are some network problem in S5 duos
best way is to replace
i am using galaxy note 4 n910f variant
issue i am facing is 4 days ago my phone just randomly showed no service i thought maybe a service issue
i replaced sim for sim provider then again it started working
after a day it again didnt work till today
i have 3 sims of different service provider i have tried all in this phone didnt work
and are working in my other phone bb bold 9900
i downloaded a firmware 5.1.1 and flashed with odin
Baseband N910FXXU1COH4
BUILD NO LMY47X.N910FXXU1COH4
CAN SOMEONE HELP ME REGARDING THE ISSUE
REGARDS
this issue came before i installed firmware i have mentioned above
Check your phone IMEI, may be it damaged !
Imei is normal and is matched to the sticker on back
EDIT: I am also experiencing Connection Problem or Invalid MMI Code
and cannot top up my phone account.
I have a Chinese version of Galaxy note 4 as I live in Beijing.
Model number: SM-N9108V
Android version 4.4.4
Processor: Snapdragon
I recently rooted my phone to get access to Gapps and the play store. After the root I noticed the phone is very slow when connecting over a data network.
The SIM card I am using with China Unicom is set for 4G.
Under Settings> more networks> Mobile networks > There is the option for network mode but it is grayed out and is selected as 2G only. I can not select it or change it. Has anyone had any problems with this or any solutions? Thanks in advance.