Database Develop

[Q] loss of gsm signal

Hi guys, please I need some help with my xperia z, it presently does not get any network regardless of changing sim. Dis occurred few days after upgrading to newest firmware .67. It worked fine after some days but signal started gettin poorer.realised dat after givin the phone a little bump it comes back to full signal.eventually it stopped getting network altogether, except in rare cases when I feel I'm close to a tower , it searches but cannot register on the network sayin to ensure that a network signal is in range 99asu.I also cannot switch to manual select of network. Please anybody with a solution. Want to know if its a hardware or software problem. I don't have a sony service centre here that can help me.thanks

I had a similar issue and found that my "APN" was missing (Telcel Mexico). I created a new APN from information on the Internet and all is well.
Sent from my C6602 using XDA Premium 4 mobile app

gwithrow said:
I had a similar issue and found that my "APN" was missing (Telcel Mexico). I created a new APN from information on the Internet and all is well.
Sent from my C6602 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
i doubt if its a similar issue. i dont get any signal at all

my brother it seems that the device is faulty... get it RMA'd

rohit25 said:
my brother it seems that the device is faulty... get it RMA'd
Click to expand...
Click to collapse
Pls what do you mean by RAM'd?

mibz said:
Hi guys, please I need some help with my xperia z, it presently does not get any network regardless of changing sim. Dis occurred few days after upgrading to newest firmware .67. It worked fine after some days but signal started gettin poorer.realised dat after givin the phone a little bump it comes back to full signal.eventually it stopped getting network altogether, except in rare cases when I feel I'm close to a tower , it searches but cannot register on the network sayin to ensure that a network signal is in range 99asu.I also cannot switch to manual select of network. Please anybody with a solution. Want to know if its a hardware or software problem. I don't have a sony service centre here that can help me.thanks
Click to expand...
Click to collapse
What model do you have??
You upgraded by PC Companion or by flashtool?? Maybe the baseband is incorrect and the phone don't have signal, maybe your carrier use two band and not both are in all coverage.

yamiAMR said:
What model do you have??
You upgraded by PC Companion or by flashtool?? Maybe the baseband is incorrect and the phone don't have signal, maybe your carrier use two band and not both are in all coverage.
Click to expand...
Click to collapse
Initially upgraded to .434 using flashtool, then .67 by OTA. By baseband do u mean 2g and 3g? Cos I don't get any form of signal at all.

Hi there, I have had the same problem: after updating the XZ to 4.2.2 (2.67 over OTA) the signal dropped instantly. Therefore I had to send it back Sony Care. They fixed it. The update has overwritten a different smallband/baseband-version above the other one, just as I suspected. I bet you can flash it yourself (your an XDA user..) instead of waiting 2 weeks or more. If you don't know how it works and you've absolutely no experience with flashing, just send it back to Sony care.
I think the easiest way is to flash a different (older) baseband-version on your XZ, reboot/factory reset and see if it works. The second method is to try downgrading the software to .244 INCLUDING the baseband-version, then update it by flashing the XZ to 2.67 while EXCLUDING the baseband-version. The third option is to re-flash (with flashtool) the 2.67 update but a different version (GLOBAL).
My phone details:
Modelnumber: C6603
Android-version: 4.2.2
Smallbandversion: 9x15A-ACEFWMAZQ-30110068-44
Kernelversion: 3.4.0g43a9ba9
Buildnumber: 10.3.1.A.2.67
Altough your smallband/baseband may differ from mine. Therefore, please find your own software-version. I'm using:
GLOBAL-LTE_10.3.1.A.2.67 (Netherlands)
Goodluck! Please let us know about your issue:fingers-crossed:.

mibz said:
Initially upgraded to .434 using flashtool, then .67 by OTA. By baseband do u mean 2g and 3g? Cos I don't get any form of signal at all.
Click to expand...
Click to collapse
But what Xperia Z model do you have?? C6603, C6602, C6606??
I have a similar situation in the case of C6603, in my carrier sometimes I have 2G signal but never 3G and other times no signal. In the case of OTA or PC Companion updates, sometimes upgrade to diferent model or carrier, I have a friend that upgrade his Xperia Arc by PC Companion but with the uncarrier firmware. Maybe this is your case, the OTA firmware don't well upgrade your base band.
In this case I suppose that you can flash only the baseband by Flashtool, but be carreful that the firmware was made for your Xperia Z (C6603, C6602, C6606).

yamiAMR said:
But what Xperia Z model do you have?? C6603, C6602, C6606??
I have a similar situation in the case of C6603, in my carrier sometimes I have 2G signal but never 3G and other times no signal. In the case of OTA or PC Companion updates, sometimes upgrade to diferent model or carrier, I have a friend that upgrade his Xperia Arc by PC Companion but with the uncarrier firmware. Maybe this is your case, the OTA firmware don't well upgrade your base band.
In this case I suppose that you can flash only the baseband by Flashtool, but be carreful that the firmware was made for your Xperia Z (C6603, C6602, C6606).
Click to expand...
Click to collapse
ok thanks i use a c6602

tally114 said:
Hi there, I have had the same problem: after updating the XZ to 4.2.2 (2.67 over OTA) the signal dropped instantly. Therefore I had to send it back Sony Care. They fixed it. The update has overwritten a different smallband/baseband-version above the other one, just as I suspected. I bet you can flash it yourself (your an XDA user..) instead of waiting 2 weeks or more. If you don't know how it works and you've absolutely no experience with flashing, just send it back to Sony care.
I think the easiest way is to flash a different (older) baseband-version on your XZ, reboot/factory reset and see if it works. The second method is to try downgrading the software to .244 INCLUDING the baseband-version, then update it by flashing the XZ to 2.67 while EXCLUDING the baseband-version. The third option is to re-flash (with flashtool) the 2.67 update but a different version (GLOBAL).
My phone details:
Modelnumber: C6603
Android-version: 4.2.2
Smallbandversion: 9x15A-ACEFWMAZQ-30110068-44
Kernelversion: 3.4.0g43a9ba9
Buildnumber: 10.3.1.A.2.67
Altough your smallband/baseband may differ from mine. Therefore, please find your own software-version. I'm using:
GLOBAL-LTE_10.3.1.A.2.67 (Netherlands)
Goodluck! Please let us know about your issue:fingers-crossed:.
Click to expand...
Click to collapse
thanks a lot, i'l try what u suggested, i know how to flash but dunno how i can do that without the baseband like u said, cos i already did a factory reset .i use a c6602 guess il find a version here that i can use.i'l hola at you if i hit any roadblocks cos i dont have esony care here.thanks a lot

mibz said:
ok thanks i use a c6602
Click to expand...
Click to collapse
Look this: C6602 10.3.1.A.2.67 STOCK
If you have doubts and I can help you tell me.

To find your version, just dial *#*#7378423#*#* => service info => software info => File system version: ......; download it from Xda and (re-)flash it. I've read about this; it happens a lot with XZ's with the GLOBAL firmware. You've probably the same version. Good luck and please let us know

tally114 said:
To find your version, just dial *#*#7378423#*#* => service info => software info => File system version: ......; download it from Xda and (re-)flash it. I've read about this; it happens a lot with XZ's with the GLOBAL firmware. You've probably the same version. Good luck and please let us know
Click to expand...
Click to collapse
hi, i jst re flashed with the 2.67 version the other guy posted in this thread, and its still not working, no network signal at all (0 dbm 99 asu), i realised i have the same baseband and kernel version with yours although i use a c6602. its global_hspa though.what do you think i should do next please. thanks

mibz said:
hi, i jst re flashed with the 2.67 version the other guy posted in this thread, and its still not working, no network signal at all (0 dbm 99 asu), i realised i have the same baseband and kernel version with yours although i use a c6602. its global_hspa though.what do you think i should do next please. thanks
Click to expand...
Click to collapse
Try to flash full firmware, because you don't have signal at all, maybe could be hardware issue. Cultural question, You try your sim card in another phone, don't you?

Okay I eventually found out what the problem was.it's a hardware problem, connection of the antenna near the vibrator, bottom right when lookin at back of phone was loose.thanks to all who posted suggestions.eventually opened it myself.

[Q] Xperia SP 3 and 4g problem

My xperia sp all of a sudden doesn't have 3/4g anymore. The weird thing is that this only occurs to stock roms. Is there any way to fix this?

I will reboot my phone to switch into 3G ... who have the same bug ?
Country : France
Carrier : Bouygues Telecom

zepp40 said:
I will reboot my phone to switch into 3G ... who have the same bug ?
Country : France
Carrier : Bouygues Telecom
Click to expand...
Click to collapse
omg i flashed a ftf from your region and i have everything exept gsm only @zepp40

@ All reflash your ROM and check: Settings > Wireless and networks> More... > Mobile network > APN/Accespoints.
If these are empty you need to add them manualy.. For this you need to check the website of your operator..

Guy i need help with an ftf !

hey guys any ftf of europe ?? i want it generic ! i use one from france but it doesnt have gsm mode ?? !!

http://forum.xda-developers.com/showthread.php?t=2311964
See Link...

Dial *#*#4636#*#* from the keypad.
Go to phone info tab. scroll down.
Check preferred network type. you can change it whatever you want from dropdown list.

[Q] No network on new I9305

I just bought my second I9305 (first one was stolen) and it doesn’t connect to any network band. It is the same International model I had before that worked perfectly. I’m not sure if it has some country code limitation, but the frequencies and bands should be the right ones.
The phone is stock version. Baseband version XXUEMK1.
I’m not sure if I should flash to another Baseband. My cellular service provider works LTE at 1800 frequency and Band 3.
Any clues about what I should do?
Thanks
Henning

hbergold said:
I just bought my second I9305 (first one was stolen) and it doesn’t connect to any network band. It is the same International model I had before that worked perfectly. I’m not sure if it has some country code limitation, but the frequencies and bands should be the right ones.
The phone is stock version. Baseband version XXUEMK1.
I’m not sure if I should flash to another Baseband. My cellular service provider works LTE at 1800 frequency and Band 3.
Any clues about what I should do?
Thanks
Henning
Click to expand...
Click to collapse
Hi,
Which is your stock firmware version JB 4.1.2 ? JB 4.3, or ?
Rooted or not ?
If you want to be sure your phone is OK, just reflash via ODIN your stock firmware from your country (and if you want from your carrier), it includes PDA, CSC and MODEM . Be sure your phone is an internationnal model i9305 and download your firmware HERE or HERE. I recommand this GUIDE from MaHo_66 xda member.

FLooDW said:
Hi,
Which is your stock firmware version JB 4.1.2 ? JB 4.3, or ?
Rooted or not ?
If you want to be sure your phone is OK, just reflash via ODIN your stock firmware from your country (and if you want from your carrier), it includes PDA, CSC and MODEM . Be sure your phone is an internationnal model i9305 and download your firmware HERE or HERE. I recommand this GUIDE from MaHo_66 xda member.
Click to expand...
Click to collapse
Hi, thanks for your reply. I'm not sure where to find these JB numbers tou are asking. The BuIld number is JSS15J.19305XXUEMKC. In Kies appears: PDA: MKC, Phone:MK1, CSC:MK2 (VDI).
The list of firmwares in the Samsung Updates page doesn't have the specific country/carrier I use. How do I know which one is equivalent?
Thanks
Henning

hbergold said:
Hi, thanks for your reply. I'm not sure where to find these JB numbers tou are asking. The BuIld number is JSS15J.19305XXUEMKC. In Kies appears: PDA: MKC, Phone:MK1, CSC:MK2 (VDI).
The list of firmwares in the Samsung Updates page doesn't have the specific country/carrier I use. How do I know which one is equivalent?
Thanks
Henning
Click to expand...
Click to collapse
JSS15J.19305XXUEMKC build correspond to Android 4.3.
What is your country ?

FLooDW said:
JSS15J.19305XXUEMKC build correspond to Android 4.3.
What is your country ?
Click to expand...
Click to collapse
Venezuela, the carrier is Digitel.

hbergold said:
Venezuela, the carrier is Digitel.
Click to expand...
Click to collapse
I've made some googling but I didn't found which modem version you have to use. I guess you have to find a latin america modem version but it has to be compatible with your current Android 4.3 build.
Did you previous stolen i9305 was running Android 4.3 as well ?
Do you know some ways to remember which versions you had on your previous phone ? Do you know someone else with the same phone ?

FLooDW said:
I've made some googling but I didn't found which modem version you have to use. I guess you have to find a latin america modem version but it has to be compatible with your current Android 4.3 build.
Did you previous stolen i9305 was running Android 4.3 as well ?
Do you know some ways to remember which versions you had on your previous phone ? Do you know someone else with the same phone ?
Click to expand...
Click to collapse
Sadly I don't have this information. I only remember that it was a German version. I do have a couple of friends that have the Samsung 4 LTE in my same carrier.
One is: I9055XXUEMK8, the other friend has I905VJUGNE2.
Hope this helps to find out the best version for my Samsung 3.
Thanks again for you help.
Henning
has the

hbergold said:
I only remember that it was a German version.
Click to expand...
Click to collapse
German MODEM Or German PDA ?
I do have a couple of friends that have the Samsung 4 LTE in my same carrier.
One is: I9055XXUEMK8, the other friend has I905VJUGNE2.
Click to expand...
Click to collapse
Those I9055XXUEMK8 and I905VJUGNE2 = MODEM or PDA number ?

FLooDW said:
German MODEM Or German PDA ?
Those I9055XXUEMK8 and I905VJUGNE2 = MODEM or PDA number ?
Click to expand...
Click to collapse
One of the Samsung 4 (brought from Italy-TIM) works perfectaly in my countro (Venezuela), the numbers are:
AP: I9505XXUEMK8
CP: I9505XXUEMK8
CSC: I9505TIMEMJ8
Which would be the equivalent Firmware for the Galaxy 3 LTE?
Could I flash this via Odin?
Thnaks
Henning

hbergold said:
One of the Samsung 4 (brought from Italy-TIM) works perfectaly in my countro (Venezuela), the numbers are:
AP: I9505XXUEMK8
CP: I9505XXUEMK8
CSC: I9505TIMEMJ8
Which would be the equivalent Firmware for the Galaxy 3 LTE?
Could I flash this via Odin?
Thnaks
Henning
Click to expand...
Click to collapse
So try do a clean install by wiping all and flash latest build I9305XXUEML9 from italy (TIM) with Odin. It's Android 4.3 like you currently have.
You can grab it here for exemple : http://samsung-updates.com/details/24460/Galaxy_S_3_LTE/GT-I9305/TIM/I9305XXUEML9.html
Follow MaHo_66 guide.
Don't forget to backup.
I hope it will do the trick.

Hi,hbergold,why not flash the version firmware 4.4.4 Stock.Here you have two versions of 4.4.4:http://samsung-updates.com/device/?id=GT-I9305 So you would be clear if the problem is the modem.I use the version DBT Poland, I live in Spain and everything works great.Version 4.4.4 also includes again the possibility of entering service mode and choose the bands.You can flash it with Odin.Pasate por aqui:http://www.htcmania.com/showthread.php?t=920004

FLooDW said:
So try do a clean install by wiping all and flash latest build I9305XXUEML9 from italy (TIM) with Odin. It's Android 4.3 like you currently have.
You can grab it here for exemple : http://samsung-updates.com/details/24460/Galaxy_S_3_LTE/GT-I9305/TIM/I9305XXUEML9.html
Follow MaHo_66 guide.
Don't forget to backup.
I hope it will do the trick.
Click to expand...
Click to collapse
Thanks FLooDW, I am just a bit concerned that the phone does have KNOX, and the MaHo_66 guide suggests not to flask with this. What are your suggestions?
HB

viktorak said:
Hi,hbergold,why not flash the version firmware 4.4.4 Stock.Here you have two versions of 4.4.4:http://samsung-updates.com/device/?id=GT-I9305 So you would be clear if the problem is the modem.I use the version DBT Poland, I live in Spain and everything works great.Version 4.4.4 also includes again the possibility of entering service mode and choose the bands.You can flash it with Odin.Pasate por aqui:http://www.htcmania.com/showthread.php?t=920004
Click to expand...
Click to collapse
Gracias viktorak, but does this modem work with LTE band 3 (1800) ?

I can`t confirm, but with the the Service Mode you can force the band you will.Have you read the post I linked?Your partner, also from Venezuala wanted to force the band 5 -3G, and according to reported- it works.Then,using Service Mode you can force the band you will.
You need to first install the 4.4.4 Rom and then if it doesn`t work normally use Service mode.

hbergold said:
Thanks FLooDW, I am just a bit concerned that the phone does have KNOX, and the MaHo_66 guide suggests not to flask with this. What are your suggestions?
HB
Click to expand...
Click to collapse
viktorak said:
I can`t confirm, but with the the Service Mode you can force the band you will.Have you read the post I linked?Your partner, also from Venezuala wanted to force the band 5 -3G, and according to reported- it works.Then,using Service Mode you can force the band you will.
You need to first install the 4.4.4 Rom and then if it doesn`t work normally use Service mode.
Click to expand...
Click to collapse
@hbergold, about KNOX, you told me you have an Android 4.3 build, so if it's an official one, you already have a KNOX bootloader (the one from sammy Android 4.3).
About bootloaders:
- if you ever flash 4.3 or 4.4 via Odin or updated from OTA you have new Bootloader from android 4.3 or from 4.4.4.
- if you bought your device and you dont know what bootloader you have, turn off your phone,reboot to download mode (hold power + volume down +home buttons) and when is there Knox flag 0x1 you have new bootloader and you are warranty off. When Knox flag is there 0x0 you have also new bootloader, but you are still in warranty and when you'll flash any custom recovery or unofficial firmware via Odin, you'll have then Knox 0x1 and you will be warranty off - so it's on your deciding. When isn't in download mode any records about about Knox, you still have old bootloader (from android 4.1.2).
- since the new sammy Android 4.4.4 bootloader, now there is also a line in blue color saying ´´SECURE DOWNLOAD : ENABLED''
About @MaHo_66 's opinion, please read here : http://forum.xda-developers.com/showpost.php?p=56506775&postcount=12. I hope he will not find any problem of sharing his post
I also recommand to upgrade to an Android 4.4.4 build but it's your choice and it depends on what you want to do with your phone (install custom ROM or not = warranty stuffs / if you want to sell the phone later, ....). Also I think you will not be able to flash any older official build (Android 4.1.2 or 4.3) if you upgrade to 4.4.4 because of the bootloader. I recommand it mainly because there is no more this random ******* stuck mdm_hsic_pm0 wakelock issue appeared since sammy Android 4.3 and which was a big problem for battery life. And also because it's smoother and faster.
I hope for you that @viktorak service mode trick will work for you if you decide to upgrade to android 4.4.4 official.

I can't use *#*#4636#*#* on Z4 AU sov31

Anyone help u ?
I use Sony Z4AU (SOV31)
i open call and use *#*#4636#*#* to change switch from 3G to 4G but nothing doing ?

I'm japanese.
Au model xperia can't go to 4636 menu.
You need flash global model FTF with Xperifirm/Flashtool.

Can Au model flash Global rom ? Lost Imei ???
filiarc said:
I'm japanese.
Au model xperia can't go to 4636 menu.
You need flash global model FTF with Xperifirm/Flashtool.
Click to expand...
Click to collapse
Can Au model flash Global rom ? Lost Imei ???