Related
(reposted from G1 SIM card does not allow connection thread)
When I went to bed on April 20th, my factory unlocked rooted HTC Desire CM7 (final) handset was working perfectly. When I woke up the following morning, I had "Emergency Calls Only" and "Your Sim Card Does Not Allow A Connection To This Network". While in this condition, I can sometimes get a 3g data connection and WiFi, GPS and the rest of the phone works well. The connection status bar shows 3-4 bars of signal strength for my service provider.
I have:
o Contacted my service provider (O2) and my IMEI is not blocked
o Tried every suggestion in every thread on the topic here and anywhere else Google sent me including toggling flight mode
o Tried the SIM in other phones - works perfectly
o Tried other SIMs in it - same error persists with another O2 SIM and a 3 SIM. The phone correctly identified that the 3 SIM was alien to it before going ahead to use it, showing that the phone IS mounting SIMs
o Rebooted.
o Factory reset.
o Removed battery for 1hr. Rebooted.
o Factory reset and re-installed a Sense Froyo Stock ROM
o Updated the Radio driver with 32.54.00.32U_5.14.05.17.zip
o At each stage tried combinations of disabled WiFi and 3g and auto-update
The nitty gritty from the *#*#4636#*#* Phone information screen contains the following (with 4 bars of signal):
IMEI: (correct code - matches the one behind the battery)
Phone Number: (my number - as defined by the SIM)
...
Location: LAC = unknown CID = unknown
Neighbouring CID = unknown
Roaming: Nor roaming
GSM service: Emergency calls only
GPRS service: Disconnected
Network type: unknown
...
Radio resets: 0
Data attempts: 0
Data successes: 0
GSM disconnect: ========DATA=======
State: DcInactiveState
disconnected with last try
at 5:38 PM
fail because Radio Not
Available
(everything else here is 0)
The preferred network type is "WCDMA preferred". Whatever I change it to, it sets itself back to that (ref bingley's solution http://forum.xda-developers.com/showthread.php?t=921812).
Turned off and on the radio a few times to try to make it see reason. No joy.
So - did I forget anything?
Can anyone help or offer any suggestions of something else I can try?
TIA for any thoughts anyone may have
Seems like you covered about all the bases. Funny, as it happened to me earlier this week. Exited a metro tunnel, had the same message. But a normal reboot fixed it.
Hope it's not a sign of things to come.
Thanks for the reply. I had no hint or warning that the phone was even thinking about considering doing this for me. No previous network issues beyond low signal ones. I've had the Desire since August 2010 and, up to this point, been loving it. Frankly - broken hearted right now :-(
Might try cleaning the contacts on the phone/sim with a little iso alcohol on a q-tip (cotton swab)
I'd try anything "outside the box"
But I'd guess the radio might be cooked. hardware wise.
While you're flashing, might as well flash your bootloader....
Any recommendations? I'm using the ClockwordMod recovery already. Really appreciating the input - any thoughts are better than silence!
As for the SIM card, I have put a brand new SIM into the phone - clean contacts, straight from a sealed packet - and put my SIM in an old SE handset I have so that at least my number is on air. The SIM works just fine. Someone suggested that I could put some tape on the back of the SIM card to improve contact, but I really think that something more fundamental is wrong here.
Update: My SIM does not work in any handset. The Desire will not connect to any network using any SIM (but shows a decent signal level).
The behaviour is as if both SIM and handset are barred. When I call my mobile number from a landline, instead of voicemail or "This user is not available right now" I get a UK "number unobtainable" or "disconnected" continuous tone back, like the number no longer exists.
O2 are claiming that both the SIM and the handset are damaged and that I need to visit one of their stores. I am feeling that something has gone wrong with their routing system for both my handset and my SIM.
Does anyone reading here have any definitive knowledge in this field that can help when I eventually do get my backside to the O2 shop?
Or does anyone have any theories?
The only thing I can think of, is that you reached a max number of transmissions.
But, I think that may be only from one of our moscow providers, and shouldnt apply to you. Basically, you do 100,000 transactions, and the sim card goes TU. But that was 3 yrs ago.
Sounds like your provider has things mucked up, especially if the sim doesnt work in any handset. I would suspect your IMEU is also blocked, but the local guy at the store doesn't know how to deal with it.
Flash it back to a stock ROM, and go raise cane at the providers store, and get a new handset.
The handset isn't from my ISP, so they are not going to replace it whatever happens. I would have to get out the HTC warranty (which should still be valid).
I can easily flash back a stock ROM - I have one all ready to roll on the SD. How about the root access - would I need to unroot it too?
When you flash back to a stock RUU ROM, is usually nulls the root access.
O mate, I have the exactly same problem! !!!!!!!!!!
Let me know if u got it fixed
I bit think it might be a virus from market.
—-- check what I post in CM's forum -----------
I'm not sure if this is the phone problem or ROM problem or SIM problem. Just post here to see anyone can help. Thanks in advance.
I've installed CM7 for over two weeks, with everything working great! But this morning, my phone showed a notification with "No SIM Card. Emergency calls only".
Well, here are what I tried to solve the problem:
1. I tried to open my phone, remove the battery and SIM card and cleaned it and insert again (i'm 120% sure it's in the right direction, it has worked fine for months!) didn't work.
2. I re-installed ROM and still "No SIM Card". btw, I tried to install Leedroid and CM7 again.
3. I reset the phone to factory setting and erased/format the SD card, which i saw somewhere online.
4.I checked the "Location & security" - "Set up SIM card lock" and found the box of "Lock SIM card (require PIN to use phone)" is ticked, I don't remember i did this! and I tried to input some PIN like 0000 or 1234. didn't work. I thought it might be the SIM card problem then, and emailed my phone carrier about the PIN. but I removed the SIM and rebooted the phone and re-checked the SIM card status, the "Lock SIM card" box was still there. Ok, I got really confused in here now.
my phone carrier replied to my email, telling me to try SIM card in other phone, if it requires PUK, they will give me PUK. (I will do that tmr) I'm thinking of trying some friend's SIM in my phone to see if the problem is in the phone hardware.
Did you try another SIM in your phone? In my case both the SIM and the Phone seem to be blocked/barred by O2 (my service provider).
Unlike in your case, my SIM is not seen as "no SIM" but as one not allowed to connect to the network. It has the same effect in other handsets and no SIM will allow my phone to connect to any network. Also, my phone does not have the "SIM lock" option ticked.
Next step will be to RUU the phone.
I intend to go to an O2 shop on Tuesday to see what they say there.
Next step will be to RUU the phone.
Click to expand...
Click to collapse
if you mind me erupted in this post, i wouldn't flash a rru rom since my feeling is not hardware related... if so wifi won't work at all neither sometimes 3g data.
have already use thetering?? already read that some provider close the connection if so.
I would try some other provider sim, some of them gives sim for free as prepaid.
this is just my feeling about
hope this help
Agreed - I wouldn't recommend RRU flashing unless about to claim on warranty / return the phone to the supplier. Since I have been advised by my service provider to take the phone to one of their shops I feel that it would be better to RRU first.
Yes, I have used tethering, but that is perfectly allowable in the UK and on my O2 unlimited data contract.
As I said earlier, I have tried other SIMs in my handset
iviarck said:
Agreed - I wouldn't recommend RRU flashing unless about to claim on warranty / return the phone to the supplier. Since I have been advised by my service provider to take the phone to one of their shops I feel that it would be better to RRU first.
Yes, I have used tethering, but that is perfectly allowable in the UK and on my O2 unlimited data contract.
As I said earlier, I have tried other SIMs in my handset
Click to expand...
Click to collapse
so what i have already expeienced about 3G data connectivity in my neighborought.
no data connection allowed, each time a went to wireless&network/mobil network uncheck and check to see if it was able to connect, it said fail... send mail to my provider... gives me answer they gonna see blabla...
it s only few days later that i learned that they were "fine tuning" their network for improvement... hope i did'nt flash radio rom or whtever things like this.
if i were in your shoes, i would wipe /data (place where the settings are store) and set the apn settings once more (i have read that you had made factory reset isn't it?) so anything would be lost.
hope this help
fragargon said:
no data connection allowed, each time a went to wireless&network/mobil network uncheck and check to see if it was able to connect, it said fail
Click to expand...
Click to collapse
My problem is a lack of connection for incoming / outgoing phone calls and SMS. Despite a decent signal level, I have the status "Emergency calls only" and when calling my number, I get a "Number Disconnected" or "Unobtainable" tone. This seems to indicate a phone with a barred IMEI. The SIM doesn't work in other handsets, indicating a barred SIM too.
fragargon said:
if i were in your shoes, i would wipe /data (place where the settings are store) and set the apn settings once more (i have read that you had made factory reset isn't it?) so anything would be lost.
Click to expand...
Click to collapse
I did do a reset / wipe. I made and Nandroid backup first, so when the test failed, I simply restored my settings from backup. The issues I have are not related to the APN settings, which I know inside out and can redefine (as I have done a few times) easily.
Thanks for the contribution to the thread
hi, still me
this really annoying, would suggest to cut the piece of cake or its phone related or it s provider related...
if from your mobile setting/about phone/phone identity... you should see 6 different information like :
model number + imei + iemei sv + de serial numb + phone number (not the one from provider) + imsi
you can also check your RIL through terminal with
Code:
su
getprop "gsm.version.ril-impl"
message => HTC-RIL 2.2.0028hmi (date)
THIS IS FOR MY CASE working with my radio (embedded i have not flash any RIL and would not advice to do)
only to check up if everything sound good with your phone... this smelt a provider related.
hope you can sort this
Here is my ril implementation code:
Code:
# getprop "gsm.version.ril-impl"
HTC-RIL 1.6.1062G (Apr 23 2010,17:35:06)
In the about screen, I get the following information:
model number: HTC Desire
imei: (my IMEI number - matches the one printed inside, behind the battery)
imei sv: O2
de serial numb: (not present in UK information)
phone number: (not the one from provider) - only the one from my provider shown
imsi: don't see this listed nor do I know what it is.
How is the cake cutting looking so far?
hi, so far smelt a sim card/provider problem
’International Mobile Subscriber Identity (IMSI) is a unique identifier provided by the sim card - allow gsm or umts identify the mobile user... and it's given by the sim card
have a look on this
Code:
International Mobile Subscriber Identity ( IMSI):
Each registered user is uniquely identified by its international mobile subscriber identity (IMSI). It is stored in the subscriber identity module (SIM) A mobile station can only be operated if a SIM with a valid IMSI is inserted into equipment with a valid IMEI.
There are following parts of an IMSI:
Mobile Country Code (MCC): 3 decimal places, internationally standardized.
Mobile Network Code (MNC): 2 decimal places, for unique identification of mobile network within the country.
Mobile Subscriber Identification Number (MSIN): Maximum 10 decimal places, identification number of the subscriber in the home mobile network.
more info on http://www.tutorialspoint.com/gsm/gsm_addressing.htm
so it s definitively a problem of sim card/provider...
hope this help you mate
edit: i got one and each mobile user with sim card should got one, it's a "secret" number associated with your "public" number which is known by everybody... your number call
Just to close the issue here and to offer up pointers for anyone with a similar problem, I now have some answers.
It turns out that on April 20th, my IMEI was blacklisted in error. According to O2 the bar was placed on the central database indicating that the action was taken by Vodafone. O2 have tried to lift the bar but the attempt was rejected because of the Vodafone flag.
Vodafone have never heard of my handset nor did they request any such blacklisting. They cannot lift the bar because the phone was never under their control and the number doesn't exist on their system. Their system will not allow them to handle numbers and IMEIs they don't have authority over.
This means that O2 are mistaken and that someone at O2 must have placed that entry in the barring database and then flagged it as Vodafone's work.
Just to make this quite clear - my phone is my own. Nobody says it was or has ever been stolen. Nobody has any track of a request to bar it. This is a freak accident or error, like none they have ever seen before.
So I am currently caught between the two service providers, each claiming it's the other's fault and neither able to fix the problem.
Next step - UK Ofcom.
... unless anybody out there knows of a way to make someone own up and correct this error? (no - I don't want to re-program my IMEI number).
Main problem is my S4 give error "Not registered on network"
Some times call works. but after leaving 10 to 15 mints when I try to call it show error "Not registered on network"
I read many help pages saying that IMEI can be null or blocked. I checked IMEI by *#06#, Mobile is showing IMEI but other than back on striker. While using mobile is showing M919 model, inside T mobile account aaps but on back stiker under battery is is showing mobile as GT I9500.
I decided to master rest mobile but confused
1. If I reset mobile, will my mobile software go back to GT I9500 or it will remain M919?
2. IMEI will change by master reset or will be same?
3. Is it possible that after changing IMEI back to original, mobile stop work in my country?
My mobile is Korean
Kindly Advice.
Resetting it will not change the software. You need to flash original I9500 firmware.
This link may be helpful to you -
http://forum.xda-developers.com/showthread.php?p=41562399
Can flashing original I9500 framwre solve network problem
Can flashing original I9500 framwre solve network problem. It loose connection every time.
Network software say you have 23 % GSM signal. but on dialing number error comes "Network not registered"
Some time it doesnt gave error but call doest not send to dailed number or received from him.
Please advice how to solve that network problem?
Thanks
What is your baseband and build number in settings? When you get a not registered on network message it usually means the device is blocked by the carrier, which is odd in this case
Sent from my SM-G920T using Tapatalk
BaseBand M919UVUFNK2
serio22 said:
What is your baseband and build number in settings? When you get a not registered on network message it usually means the device is blocked by the carrier, which is odd in this case
Sent from my SM-G920T using Tapatalk
Click to expand...
Click to collapse
Bro,
My BaseBand is M919UVUFNK2. Built number is KTUP.M919UVUFNK2. so what should i do to unlock my device? change ID of obile ? how?
But there is one thing, not all the time it gives error. Some time is make call, and receive. but after 2 3 minutes it loses connection and show error "Not registered on network"
Please advice
Muhammadjunz said:
Bro,
My BaseBand is M919UVUFNK2. Built number is KTUP.M919UVUFNK2. so what should i do to unlock my device? change ID of obile ? how?
But there is one thing, not all the time it gives error. Some time is make call, and receive. but after 2 3 minutes it loses connection and show error "Not registered on network"
Please advice
Click to expand...
Click to collapse
It looks like the device Is M919 not GT-i9500
The device is not locked, otherwise it would ask for unlock code. I would either take it to your carrier and see if they can look into the problem and maybe they will have a solution, or you could also try to change the imei number, that may work because of the error message that you receive, which usually means the device is blocked from service, not locked. Changing the imei number may be illegal in your country and no methods for doing so will be discussed here
Sent from my SM-G920T using Tapatalk
serio22 said:
It looks like the device Is M919 not GT-i9500
The device is not locked, otherwise it would ask for unlock code. I would either take it to your carrier and see if they can look into the problem and maybe they will have a solution, or you could also try to change the imei number, that may work because of the error message that you receive, which usually means the device is blocked from service, not locked. Changing the imei number may be illegal in your country and no methods for doing so will be discussed here
Sent from my SM-G920T using Tapatalk
Click to expand...
Click to collapse
Thank you for reply Bro.
I found little solution
Bro this is not IMEI or block. see below and further advice
1.
Yesterday I changed rom From kitkat to FlexOS. and installed app "" Network Signal Info"
in this Rom I have choose network "2G", so when i lose connection, and i came to open area or out of room it automatic connect to GSM network. Kitkat was not auto connecting even if 2g only was selected. but FLex rom it good.
2.
Inside room network signal info app show signal strength less than -70 as "-80, -90, -100" "Signal % from 32 to 55" and ASU is from 12 to 18 then network loses on mobile, no send receive call. But when I go out of room signal goto green , -70 -60 -50. ASU go to 20 , 22, 24. then FlexOS it self connect. and i receive and send call.
Can it be antenna problem? or if i install app that tweak or boost signal so that either i tweak and make call on same -80, -90 signal strength or i make call on boosted signals by app.
Thank and please advice. I think i am very near to solution.
Boot into download mode to see what model # is shown on the screen.
Hi there. Recently my Nexus 5X has something wrong with its communication function.
I am using CM13 nightly builds with ElementalX kernel on 4GLTE network. And everything works fine except:
When making calls, it ends up with "Network not available". However, the signal bar is full. Also, it is unable to send or receive any text message.
I have already tried:
1. Flash the latest factory image from Google(mtc19v). And it worked for a while then the issue recurred.
2. Dial *#*#4636#*#* and switch to "CDMA only" but it failed to make it, automatically rolled back to LTE mode.
3. Tried CM13 snapshot and other nightly builds, and still got the problem.
Does anyone have any advice? Thanks.
Cijophxon said:
Hi there. Recently my Nexus 5X has something wrong with its communication function.
I am using CM13 nightly builds with ElementalX kernel on 4GLTE network. And everything works fine except:
When making calls, it ends up with "Network not available". However, the signal bar is full. Also, it is unable to send or receive any text message.
I have already tried:
1. Flash the latest factory image from Google(mtc19v). And it worked for a while then the issue recurred.
2. Dial *#*#4636#*#* and switch to "CDMA only" but it failed to make it, automatically rolled back to LTE mode.
3. Tried CM13 snapshot and other nightly builds, and still got the problem.
Does anyone have any advice? Thanks.
Click to expand...
Click to collapse
Try getting a new simcard from your carrier.
Darke5tShad0w said:
Try getting a new simcard from your carrier.
Click to expand...
Click to collapse
Thanks for reply. I will try ASAP.
OK. I have fixed it. This is the MOST weird and tricky problem I have ever met since I knew Android phones.
First there are some key concepts:
From the "*#*#4636#*#*" (Testing) menu -> Phone Information, we notice IMEI, Phone number, and Current Network. In my case I couldn't make phone calls or send/receive text messages, I got my IMEI and Current Network NORMAL, but I got NOTHING for my Phone number section, which means my phone turned into something without a number! So how can it be discovered by the mobile base stations?
Furthermore, scrolling down there are another 3 indicators: GSM service and GPRS service and Network type. In my case the GSM service was "Emergency calls only"(However there is someone on the Androidcentral Forum said his Nexus 4 under the same circumstance can't even dial 911), and I doubt that. The GSM service was COMPLETELY offline. On the other hand, since my data service ran smoothly thus the GPRS service is always "connected". The Network type is "LTE". I have tried many times to change it to the CDMA or GSM ones, like "eHRPD", "1xRTT", "EDGE" or sth else but few succeeded. Once succeeded, I can normally voice or text, yet on the outdated network.
Then how I fixed this:
I googled "Mobile network not available" and got many results about the Samsung phones. Then googled "mobile network not available nexus" and found this one "Mobile Network Not Available" on Nexus 4 T-Mobile which perfectly matches my case. Finally I thought it had something to do with my network provider and my phone should not be blamed. I just tried another SIM card from another carrier, which worked perfectly on LTE network with voice and text. When I opened the *#*#4636#*#* menu and tried to change "preferred network", the phone also worked smoothly no matter WCDMA only/GSM only/LTE only. I put back my bad SIM card and the voice and text came back!??? I was extremely confused. That is to say, still there was a problem on my phone. By inserting another SIM it just did something like refreshing the stucked radio module??? I wondered. After this simple trick I got my voice and text back though, the "Current network" became "Roaming Indicator Off".... Maybe the next time.
*#*#4636#*#*
That code only pulls up IMEI 1 info when clicked on "Phone info"
How to access this for our 2nd IMEI?
I want to change the band to LTE only for my 2nd SIM.
There are other related "2 imei" threads. Nobody seems to have established if the OP3 is a "dual sim active"(in effect 2 separate phones) or a "dual sim standby" ( while 1 sim is handling a call the other sim cannot be used - only 1 IMEI needed????). Have you looked at (standard Android menu) Settings > Wireless and networks > SIM & network and scroll down to Default SIM setting - Does the ability to set the sim to be used for calls, messaging and data meet your needs?
You can see your IMEI number(s?) in Settings > About Phone > Status > IMEI information (also info in same menu "SIM status")
peterk-1 said:
There are other related "2 imei" threads. Nobody seems to have established if the OP3 is a "dual sim active"(in effect 2 separate phones) or a "dual sim standby" ( while 1 sim is handling a call the other sim cannot be used - only 1 IMEI needed????). Have you looked at (standard Android menu) Settings > Wireless and networks > SIM & network and scroll down to Default SIM setting - Does the ability to set the sim to be used for calls, messaging and data meet your needs?
You can see your IMEI number(s?) in Settings > About Phone > Status > IMEI information (also info in same menu "SIM status")
Click to expand...
Click to collapse
Finally someone who understands me however some models in the eu have 2 imeis
eu-2 imeis
chinese models or carrier models-1 imei
Ahmed rahi said:
Finally someone who understands me however some models in the eu have 2 imeis
eu-2 imeis
chinese models or carrier models-1 imei
Click to expand...
Click to collapse
I got china variant, one imei on box and two imeis in settings. Im a little confused
nikexv2 said:
I got china variant, one imei on box and two imeis in settings. Im a little confused
Click to expand...
Click to collapse
Lol the 2 in setting are exactly the same
Ahmed rahi said:
Lol the 2 in setting are exactly the same
Click to expand...
Click to collapse
Nope not for me, two last digits are different
omkarroxx said:
*#*#4636#*#*
That code only pulls up IMEI 1 info when clicked on "Phone info"
How to access this for our 2nd IMEI?
I want to change the band to LTE only for my 2nd SIM.
Click to expand...
Click to collapse
You can dial *#06#, that code gives me both IMEIs on my OP3 A3003
What's weird is that my 2 imeis are both 14 digits whenever I was getting my sim changed at&t said its supposed to be 15 digits. So I used the imei that's in the *#*#4636#*#* menu and that works fine.
dgaspa75 said:
You can dial *#06#, that code gives me both IMEIs on my OP3 A3003
Click to expand...
Click to collapse
I dont need my imei. I know that.
I want to change the band for sim 2.
try *#*#4636#*#* and you will know.
JazzieBoi said:
What's weird is that my 2 imeis are both 14 digits whenever I was getting my sim changed at&t said its supposed to be 15 digits. So I used the imei that's in the *#*#4636#*#* menu and that works fine.
Click to expand...
Click to collapse
IMEI number is always 15 digits?
omkarroxx said:
IMEI number is always 15 digits?
Click to expand...
Click to collapse
Yeah apparently at&t said that for them to put it into their system they have to be 15 digits or else it doesn't let them enter it.
JazzieBoi said:
Yeah apparently at&t said that for them to put it into their system they have to be 15 digits or else it doesn't let them enter it.
Click to expand...
Click to collapse
I was telling you that IMEI is always 15 digits. Its universal
omkarroxx said:
I was telling you that IMEI is always 15 digits. Its universal
Click to expand...
Click to collapse
Yeah my 2 imeis that show up in the settings are both 14 digits not 15 which is weird.
JazzieBoi said:
Yeah my 2 imeis that show up in the settings are both 14 digits not 15 which is weird.
Click to expand...
Click to collapse
An IMEI is 15 digits - 14 digits "the data" + 1 digit, a check digit to ensure that the 14 digits are valid. Google for IMEI structure and you will also find "calculators" that demonstrate the "check digit". IMEI is mandatory in Europe ( all networks must use "GSM" technology) and it means you can connect any "IMEI" phone to any EU carrier just by changing the sim card. Some US carriers use CDMA technology networks and the IMEI equivalent is a 14 digit MEID. The BIG difference is that "CDMA" requires the physical phone to be registered with the carrier with the MEID - you can't just swap the sim to change your network provider.
Sorry, I did not find the correct forum for a Samsung a3 2015.
I have an a3 2015 that's not finding any network, I suspect the simcard en card reader is functioning because when I start the phone it asks me for my pincode and I'm able the login to the phone.
It has a valid imei, but when i try to call it says "unable the register on network"
Has anybody seen this problem before and knows how to fix it ?
That could be caused by, including but not limited to: Low signal strength (ignore signal bars, phones could select other MNOs and measure that), bands in coverage are not supported by the phone, tower or its backhaul is down for maintenance (or failure), IMEI/SIM (ask your mobile network operator anyway), circuit switching is not supported or out of coverage of the mobile network operator, the CSC in your ROM is not applied correctly for (packet switched) VoLTE (if the mobile network operator supports it on your device), antenna failure, the wrong mobile network operator is manually selected in the network settings, too much interference from neighbour cells on the same channel, bad reselection/handover, the signal has been 'echoed' too much, too far away from the tower for the timing advance, too far away from the tower for the RACH parameters.
Probably not...
Device is locked to LTE only. Or locked in some other way.
1. try to put your simcard on different phone. is it work? if yes, so your sim card reader is broken
2. have u reset your device to its default state? if yes and still the same, u have to reflash the whole rom through ODIN. if u haven't try it, do it now.
3. use another simcard on your phone, see the signal bar, is it there? if no signal, then the answer could be on the number 1 / 2.
4. what u did until u lost your signal?
I've tried the simcard in another phone, it's working.
Can the simcard reader be broken, even if it asks for a sim pincode ?
The phone was working until they pushed some updates, i've tried a factory reset but without success.
I've been reading on forums the problem could be a QCN file or a cert file ?
Is this also replaced when reflash the phone ? ( new a this, so I don't want to brick the phone.)
Where can I find the correct firmware ? Is it country related or just a300fu is fine ?
The thing i find weird about it is the phone is not showing no signal icon without the simcard insert (first icon on the link)
But shows a gray singal icon (like the second icon on the link but completely gray, without the bars).
http://newsandguides.com/samsung-galaxy-s3-android-notification-bar-icon-guide/)
update: when I turn airplane mode on and off, the signal icon is showing signal bars without a sim card insert.
Nobody that can guide me to the correct firmware ?
peter43 said:
Nobody that can guide me to the correct firmware ?
Click to expand...
Click to collapse
You know the phone's model. For the CSC (country),
Use the one in your phone, there are apps to read CSC or use "getprop ro.csc.sales_code" in a terminal emulator.
Use the one of your current location/mobile network operator, the displayed 'location the CSC belongs to' on CSCs might not be accurate. It might not apply correctly.
Use a different one, but some apps might be customized differently, there are indeed some cellular configurations but it's mostly higher features, not basic functionality (though there are some). It might not apply correctly.
For the version, try an upgrade or the same version. Open the stock recovery to fully apply the CSC. For downgrades, the number in the middle of the firmware version can't be reduced. If a downgrade causes the loss of cellular, wipe data or return to the previous firmware.
In most cases I highly do not recommend attempting to restore the EFS, flashing PIT, or downgrading to Lollipop on A 2015.
The signal bars being 'blank' after an insert might be because the tower is simply distant. Calls could work on another phone if the bands (or selected RAT on the phone - 2G/3G/4G) of a nearby tower or VoLTE/VoWiFi is supported. Appears without a SIM, or could be suddenly raised with the SIM, might be because the phone has selected other mobile network operators (not related to your SIM), for measurement and limited use... you can view the transition here *#0011#, there are a few others like this but it should be enough, it is MCC(country)MNC(operator), also called PLMN ID. For the signal strength, while your mobile network operator is selected, RSSI is the signal strength of that channel, RSCP and RSRP is approximately the signal strength of the cell not canceled out by interference, ecio,ecno,rsrq,sinr,rxqual are signal quality.
Maybe the spectrum of the previously good tower has been refarmed (the frequencies previously used on 2G is now on 4G for example), or anything above, or an update somehow broke band support.
Before modifying firmware, try moving around, to connect to other cell towers of the mobile network operator of the SIM, the current band should be in 0011, check which bands your MNO uses, the list of bands the phone supports are on the internet. If for some reason the plmn id isn't in 0011 there are apps to display it.
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
peter43 said:
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
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q0000 probably does not apply to Android Lollipop and above. On lollipop and above, it's *#2263# for band selection, marshmallow, *#2683662# (and others), for channel selection and all that, even fewer on Nougat, even fewer on Oreo. Root might be required, but those codes are available in some CSCs (mostly US carrier ones) for some devices without root. Compare *_keystrings.dat in /system/etc.
For the other kind of network mode, also known as rat (radio access technology), 2g/3g/4g, apps might be able to open 4636 without root, there's the full selection.
Tried both codes but without result ...
The phone is running Android 6.01
Not registered on Network
Hi, I have the same problem with my samsung galaxy a3 2015. I tried several ways to fix it such as flashing stockrom,factory reset And even then tried a custom roms but still have this issue. This issue can be only Fixed by replacing network I.C to a New one.
Its only the problem of network i.c .