can i buy a new motherboard - Galaxy S 4 Q&A, Help & Troubleshooting

i have a problem with the signal on my gs4 ,i have been looking everywhere for a motherboard but can not find any where to purchase one from,it looks very easy to replace ,,any help please

westentertainer said:
i have a problem with the signal on my gs4 ,i have been looking everywhere for a motherboard but can not find any where to purchase one from,it looks very easy to replace ,,any help please
Click to expand...
Click to collapse
You can purchase used motherboards on eBay but they may be hard to come by. Generally a used MB either has a bad ESN if it is carrier branded or it has something else wrong possibly water damage. What is wrong with your signal? Why are you trying to get a new MB
Sent from my GT-I9505G using Tapatalk 2

westentertainer said:
i have a problem with the signal on my gs4 ,i have been looking everywhere for a motherboard but can not find any where to purchase one from,it looks very easy to replace ,,any help please
Click to expand...
Click to collapse
warranty ??

MJHawaii said:
You can purchase used motherboards on eBay but they may be hard to come by. Generally a used MB either has a bad ESN if it is carrier branded or it has something else wrong possibly water damage. What is wrong with your signal? Why are you trying to get a new MB
Sent from my GT-I9505G using Tapatalk 2
Click to expand...
Click to collapse
i purchased it off fle bay.can not dial out.i tried various searches on imie and it is not blocked.when i try to dial on my EE sim it starts to dial but the contact turns orange .beeps and then disconnects.but it is not showing blocked.

westentertainer said:
i purchased it off fle bay.can not dial out.i tried various searches on imie and it is not blocked.when i try to dial on my EE sim it starts to dial but the contact turns orange .beeps and then disconnects.but it is not showing blocked.
Click to expand...
Click to collapse
IMEI would not be blocked the phone sells fully unlocked. Try to
1. Do a hard reset
2. Flash new stock firmware via Odin
3. Try a different SIM from another carrier.
4. Try to restore the IMEI EFS NV-data.bin file.
Sent from my GT-I9505G using Tapatalk 2

MJHawaii said:
IMEI would not be blocked the phone sells fully unlocked. Try to
1. Do a hard reset
2. Flash new stock firmware via Odin
3. Try a different SIM from another carrier.
4. Try to restore the IMEI EFS NV-data.bin file.
Sent from my GT-I9505G using Tapatalk 2
Click to expand...
Click to collapse
i have hard reset it,i did try a custom rom but flashed back to stock,also i did a OTA update a few days ago,if i try different sims it states not registered on network,...how do i restore IMEI EFS????? please

westentertainer said:
i have hard reset it,i did try a custom rom but flashed back to stock,also i did a OTA update a few days ago,if i try different sims it states not registered on network,...how do i restore IMEI EFS????? please
Click to expand...
Click to collapse
I believe Philz CWM has an option in recovery to restore your EFS check here
Hopefully a backup exists on your phone if not your going to have to restore without a backup. Search the forums here on how to restore without a backup if that does not work
http://forum.xda-developers.com/showthread.php?t=2281367
Sent from my GT-I9505G using Tapatalk 2

MJHawaii said:
I believe Philz CWM has an option in recovery to restore your EFS check here
Hopefully a backup exists on your phone if not your going to have to restore without a backup. Search the forums here on how to restore without a backup if that does not work
http://forum.xda-developers.com/showthread.php?t=2281367
Sent from my GT-I9505G using Tapatalk 2
Click to expand...
Click to collapse
tried but still will not dial out ,does anyone know a genuine site for checking IMIE

MJHawaii said:
I believe Philz CWM has an option in recovery to restore your EFS check here
Hopefully a backup exists on your phone if not your going to have to restore without a backup. Search the forums here on how to restore without a backup if that does not work
http://forum.xda-developers.com/showthread.php?t=2281367
Sent from my GT-I9505G using Tapatalk 2
Click to expand...
Click to collapse
poped my EE sim in phone found a good signal spot ,strange i can get data downloads but no voice or sms ,puzzled now

Your better off calling a carrier (3, t mob etc) ask them to check the imei. I brought 1 off ebay, worked great for 2 weeks then lost signal, tried loads of sims, some showed signal but wouldnt let me make or recieve calls or txts, searched online if the imei was blocked and just got msgs sayin "valid" in the end called 3 even though the phone is sim free but was sent out with a new 3 sim, they told me it had been blacklisted as a fraud case and the phone will never work and to bin the phone. This gave me a challenge, brought a 2nd phone from the states with a broken screen (US blacklisted imei can sometimes work in the uk) chamged the boards and now have a working s4
Sent from my GT-I9505 using xda premium

westentertainer said:
poped my EE sim in phone found a good signal spot ,strange i can get data downloads but no voice or sms ,puzzled now
Click to expand...
Click to collapse
Send over your IMEI in PM and I can check whether it is blocked or not.

Related

N9005 can't make calls and SMS

Hi folks! Im hoping someone can help me sort this out.
I rooted my n9005 using CF-root to install custom ROMs. I wanted to back-up EFS and searched google play store for an app, I found "Efs by BORIS.X.1" app.
This app is not to be used for NOTE 3 as per warning by the developer but I'm so stupid not to read. :crying:
My phone got into a bootloop and if I was able to pass boot up, after few seconds it would restart. I have scouted the forums for fixes and I have found one. I am now able to boot my phone normally but cannot make calls and sms.
My IMEI is unknown, I already fixed it using "EFS pro" tool, IMEI is showing now but still no calls and sms. I also noticed that the serial number is not the same as the one written at the back of the phone. I have read that restoring EFS solves this problem, but I don't have EFS backup.
To sum things up, the phone now boots up normally, IMEI is showing the right one, serial number still incorrect, can connect via WiFi, can't make calls and sms but phone has signal bars and says "Emergency Calls Only".
When trying to make a call, "not registered to network" shows up.
Im on MJ6 BTU firmware with root and TWRP recovery. I originally got my phone with MJ1 KSA firmware.
Im planning to bring my device to a nearest samsung sevice center but im not sure of they will accept it or if they can fix it even at a price.
It's been literally days since I had a good night sleep.
Please help. Thanks!
Having the same problem...How did you get your phone connected to efs pro? Every time I try my device reboots :/ Is it possible in recovery mode? Which recovery?
Did you find a final solution?
•You need to be rooted first.
•Make sure USB debugging is enabled.
•Dial *#0808# on your phone and select the same items in the image
•Connect your phone to your computer using the USB cable and open up EFS Pro.
I still haven't figured out the solution of my problem.
I brought my phone to the nearest Samsung service center but their solution is just to replace the motherboard which is very expensive.
Sent from my SM-N9005 using Tapatalk
Try this , I know it say N900-t but it might work
http://forum.xda-developers.com/showthread.php?t=2471421
Sent from my SM-N9005 using XDA Premium 4 mobile app
KevandLynds said:
Try this , I know it say N900-t but it might work
http://forum.xda-developers.com/showthread.php?t=2471421
Sent from my SM-N9005 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks mate! I tried that before, I was able to get out of the bootloop but still no calls/sms/data connection.
I'm going to try it again though.
Change 12 in that script to 11 for n9005
Sent from my SM-N9005 using XDA Premium 4 mobile app
KevandLynds said:
Change 12 in that script to 11 for n9005
Sent from my SM-N9005 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
tried it but still no luck.
still no calls, sms, & data.
the serial number is still not the same as the one printed on the sticker of the phone.
maybe I really need to change my motherboard?
kipconrad said:
tried it but still no luck.
still no calls, sms, & data.
the serial number is still not the same as the one printed on the sticker of the phone.
maybe I really need to change my motherboard?
Click to expand...
Click to collapse
Did You manage to fix your phone? I am having the same problem and don't know what to do. Any suggestions ?
mamattar1 said:
Did You manage to fix your phone? I am having the same problem and don't know what to do. Any suggestions ?
Click to expand...
Click to collapse
My phone is fixed now. The one and only solution that worked for me is replacing the motherboard. Samsung Saudi did it, and I paid a fortune for it.
Worked For Me By SPT Repair 3G Network On N900w8 Using Spt
Regards

lg d802 no signal [ unknown baseband ]

hi there i need your help
i flashed PA rom and i did a sd format to clean it all
and now i have no signal or anything and i think it has something to do with efs?
i dont have a backup of efs folder only a first nandroid backup and restoring that doesn't work eather
thanks.
EDIT:
also no sound. no wifi (avoiding bad connections) but my connection is verry good
any solutions? I have the same problem
dunda92 said:
any solutions? I have the same problem
Click to expand...
Click to collapse
the only way is to use KDZ method
any solution I have this problem also, went back to stock kdz method and tot method nothing works. It also keeps rebooting every 20 seconds.
I tried a few different things for a few days and I couldn't fix it so I took it in and they ordered me another G2. My issue is that I wiped my phone clean and lost twrp. I had a backup efs. Good luck
http://forum.xda-developers.com/showthread.php?t=2432476
http://forum.xda-developers.com/showthread.php?t=2471370
Replaced the Verizon files with my 801 but still didn't work
http://forum.xda-developers.com/showthread.php?t=2448960
to be safe, next time please upload your efs backup to other storage like Dropbox or something similar..
Yep. This is for next time.
http://forum.xda-developers.com/showthread.php?t=2451390
Sent from my LG-d801 using Tapatalk
I'm back to stock via LG Tool (restore "real" original software), but nothing happens.
Still Unknown baseband
is your emei still same as on box?
seek how to get that back if you never made efs backup.
Sent from my LG-D802 using xda app-developers app
Same here guys, no backup, deleted my efs
I cant send it back how do i fix it
j0sh1 said:
Same here guys, no backup, deleted my efs
I cant send it back how do i fix it
Click to expand...
Click to collapse
Honestly, you'd need some one to send you their EFS backup (who's on the same carrier and model). Then you'd need to extract it. Then edit it to replace their data with yours.
But I don't think your going to find anyone willing to do that. As it's a HUGE risk to them. So I think your only bet it to to a warranty or repair 'call' with lg if not your carrier.
Sent from my LG-d801 using XDA Premium 4 mobile app
NomadCF said:
Honestly, you'd need some one to send you their EFS backup (who's on the same carrier and model). Then you'd need to extract it. Then edit it to replace their data with yours.
But I don't think your going to find anyone willing to do that. As it's a HUGE risk to them. So I think your only bet it to to a warranty or repair 'call' with lg if not your carrier.
Sent from my LG-d801 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I have the international d802 bought from Kogan Hong Kong stock been using with optus network in Melbourne Australia.
j0sh1 said:
I have the international d802 bought from Kogan Hong Kong stock been using with optus network in Melbourne Australia.
Click to expand...
Click to collapse
Try this method
http://forum.xda-developers.com/showthread.php?t=2471370

No Signal after flashing 4.3 over 4.4.2

Hi, so basically I flashed a Jelly Bean ROM (4.3) over my KitKat ROM (4.4.2) and have since
permanently lost my signal. I've tried flashing a multitude of Modems and ROMs, yet I'm still unable to
obtain signal. My device shows emergency signal bars but that's it. When I go to assign my carrier, it comes up with some of
the major carriers here in the UK (including 3, which is my carrier) but my phone always fails to connect
and register on the network. I'm faced with the same problem when I select 'Select Automatically.'
I've been told that my problem lies with a corrupt EFS folder, but my IMEI still shows as it should (The same one on
the back of my phone.) I've tried using a different sim card but still the problem persists. When I booted up with a
different 3 sim one time, for a split second my carrier on the lock screen had changed from
'Emergency Calls Only' to '3', but changed back to the former immediately after. I'm yet to try and use a sim from a
different carrier. Any suggestions?
You cant downgrade android 4.4.2 to android 4.3 coz they use different bootloaders. You will have to flash again android 4.4.2 for recover the signal and solve ur problems :highfive:
Reflash kitkat 4.4.2 as u can not downgrade from 4.4.2 to 4.3.
Maybe the IMEI Certificate is damaged, and need repair, try *#0011#, if at the end of the list you see IMEI CERTI: FAIL then you have to take your device for repair, if show PASS then try the latest modem
Sent from my GT-I9500 using xda app-developers app
I've tried flashing 4.4.2 ROMs through recovery but no progress. I've tried flashing the
official 4.4.2 ROM through Odin but still it doesn't work. Also, in Service Mode,
IMEI Certi shows as NA :/ does that mean I'd have to get it repaired?
Yep, take the phone to a repair shop, is the only way out, i say because i fix that a lot on my shop
Sent from my GT-I9500 using xda app-developers app
carlosm15 said:
Yep, take the phone to a repair shop, is the only way out, i say because i fix that a lot on my shop
Sent from my GT-I9500 using xda app-developers app
Click to expand...
Click to collapse
Damn didn't want to have to get it fixed :/ do you (or anyone else for that matter) happen to know how much a repair would cost?
well on my repair shop, the cost to the client is 50$ for EFS v1 and 60$ for EFS v2, and now you have EFS v2, the cost in different country is not the same as you know, so ask for the repair prices
carlosm15 said:
well on my repair shop, the cost to the client is 50$ for EFS v1 and 60$ for EFS v2, and now you have EFS v2, the cost in different country is not the same as you know, so ask for the repair prices
Click to expand...
Click to collapse
Ahh okay thanks man, I'll get a quote for it tomorrow.
carlosm15 said:
Yep, take the phone to a repair shop, is the only way out, i say because i fix that a lot on my shop
Sent from my GT-I9500 using xda app-developers app
Click to expand...
Click to collapse
wich box do you use to repair this problem?
psa47 said:
wich box do you use to repair this problem?
Click to expand...
Click to collapse
I "killed my phone for more than 4 hours a couple of nights ago. Long story short I was trying to do the same thing, "downgrade fro kitkat for personal reasons. The phone wouldn't boot up, and couldn't get it to go to download mode. Afternseveral tries it finally got into doenload mode and I was able to reflash with original/official kitkat, and it works just fine, the onky thing is that I keep seeing that imei certi : na status on the service mode screen and can't navigate to other screens within service mode. Im trying to sim unlock it using that method. I'm not sure that I did anything special, just try to reflash again with official kitkat and hopefully it will stick...
Wen i dial *#06# my imei is fine but Wen i dail *#0011* i also get imei /na my phone doesn't have any signal also I don't know what caused the problem cause i got the phone second hand also on 4.4 2 stock, could this be the problem y I can't get any signal at all? I also tried flashing custom roms and stock kk ROM but still no signal help please

Please help! no signal after rom change

Hi guys
I have a UK i9505 which was running XXUFNB9, I rooted using CF auto root and installed PAC man rom now i have no signal to make calls or texts i have re installed the original firmware but still nothing, please help guys, i need my phone for work and its becoming a nightmare.
Factory reset
[email protected] said:
Factory reset
Click to expand...
Click to collapse
tried that, no luck
What recovery are you using? I had this problem before!
kduan said:
What recovery are you using? I had this problem before!
Click to expand...
Click to collapse
ITS STOCK RECOVERY AT THE MOMENT BUT WHEN I FLASHED IT WAS PHILZ TOUCH (sorry about caps)
Does anyone have any ideas? i've re flashed the modem and still nothing
Check that you're baseband isn't "unknow". And check if you lost the imei
Sent from my GT-I9505 using XDA Free mobile app
Jacopo97 said:
Check that you're baseband isn't "unknow". And check if you lost the imei
Sent from my GT-I9505 using XDA Free mobile app
Click to expand...
Click to collapse
thanks for your reply, how do i check that?
rumbo76 said:
thanks for your reply, how do i check that?
Click to expand...
Click to collapse
Settings, info , baseband
Sent from my GT-I9505 using XDA Free mobile app
Jacopo97 said:
Check that you're baseband isn't "unknow". And check if you lost the imei
Sent from my GT-I9505 using XDA Free mobile app
Click to expand...
Click to collapse
Jacopo97 said:
Settings, info , baseband
Sent from my GT-I9505 using XDA Free mobile app
Click to expand...
Click to collapse
baseband is i9505XXUAMDM
rumbo76 said:
Hi guys
I have a UK i9505 which was running XXUFNB9, I rooted using CF auto root and installed PAC man rom now i have no signal to make calls or texts i have re installed the original firmware but still nothing, please help guys, i need my phone for work and its becoming a nightmare.
Click to expand...
Click to collapse
Hi man. People keeps telling you to install new modem, kernel etc...but i think you have corrupted EFS folder.
I hope you backup your EFS folder before flashing ANY rom because, otherwise you will have to go to some repair shop.
Well, I don't understand a lot, but I think you could check if you didn't lost your IMEI. Go on Settings > About Device > Status and check if your IMEI still there.
If it is, I don't know what could be. You could try flash another modem or restore a backup (if you have one) with PhilZ Touch but if it isn't, that means you lost your IMEI. I remember I read about that somewhere, that there is a risk of losing IMEI when you flash a lot of ROMs.
If you have backup from your IMEI, just restore it. If you don't, I don't know what you could do, but I guess you could still do something.
One more thing: Wi-Fi works?
Like I said, I don't understand a lot, so everything I just said may be very stupid. Or not. Sorry for bad english.
FNXHenry said:
Well, I don't understand a lot, but I think you could check if you didn't lost your IMEI. Go on Settings > About Device > Status and check if your IMEI still there.
If it is, I don't know what could be. You could try flash another modem or restore a backup (if you have one) with PhilZ Touch but if it isn't, that means you lost your IMEI. I remember I read about that somewhere, that there is a risk of losing IMEI when you flash a lot of ROMs.
If you have backup from your IMEI, just restore it. If you don't, I don't know what you could do, but I guess you could still do something.
One more thing: Wi-Fi works?
Like I said, I don't understand a lot, so everything I just said may be very stupid. Or not. Sorry for bad english.
Click to expand...
Click to collapse
Thanks for the info guys its really getting to me now, i still have imei but no backup, wifi is working as is everything else except signal.
I have been having this problem over 3 months now, still not haven't been solve.... My imei and everything is in place, I tried flashing stock rom, custom rom, factory reset phone, tried almost every modem there is and still no luck, but the thing with mine is when I go into the town area I get a few signal bars certain area in town, very weird, what could really be the problem, I know it's not my network or my Sim card so what could it be
Did u ever solve ur problem? Still having this problem
Hey rumbo76 hru, this same problem happened with my brother with note 3, but in here india, he did tha root and falsh tha rom, then he lost root, then he goes bak to stoke firmware so he lost hus signal, and IMEI shows UNKNOWN no network registered, but he search his original firmware n falsh, and he got network n imei number bak, so plzz read n search ur specific device model number n flash, you will be succeed sure.. Plzz update us... Thnks... ?
Sent from my GT-I9500 using XDA Premium 4 mobile app

IMEI Backup, Restore

Any trusted method to backup and restore EFS partition (EFS and NV_data) to keep things going safe?
Thanks in advance
dark-shadow93 said:
Any trusted method to backup and restore EFS partition (EFS and NV_data) to keep things going safe?
Thanks in advance
Click to expand...
Click to collapse
Hello ... Are you rooted ? If so use EFS IEMI back up in play store...
I grabbed it from phone and placed on my PC and also saved it to google drive
Braggster
Braggster said:
Hello ... Are you rooted ? If so use EFS IEMI back up in play store...
I grabbed it from phone and placed on my PC and also saved it to google drive
Braggster
Click to expand...
Click to collapse
Absolutely rooted
Have you tried to restore using it?
I don't really trust these apps (bad experience on Galaxy S4) I would rather use Terminal emulator and type proper codes, which I want to know
Sorry if this is irrelevant but why do you back up imei?
Sent from my SM-G935F using Tapatalk
dark-shadow93 said:
Absolutely rooted
Have you tried to restore using it?
I don't really trust these apps (bad experience on Galaxy S4) I would rather use Terminal emulator and type proper codes, which I want to know
Click to expand...
Click to collapse
Hi mate sorry for delay I've not personally backed up as I've had no need to but I know a few ppl who have also it's produced by wanam
All best braggster
hungdinh1 said:
Sorry if this is irrelevant but why do you back up imei?
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Backuping EFS partition will backup data like device specific essential information such as the IMEI (International Mobile Station Equipment Identity), wireless device MAC address, baseband version, product code, system ID and NV data.
If you lose your IMEI during flashing and wiping roms, you will end up with a piece of brick incapable of making calls:crying:
Hi all
Can someone help me because my phone (g935f) imei show only 00000000000 and my s/n-code is null. Phone think it is g935fd but it is only g935f. Waranty is void and problems start when i flash custom rom and i forget take efs backup so i try to flash stock firmware but its not working and kies restore not working because it ask s/n number and i dont no it How i can solve these problems?
Sorry my bad english
Thanks
Sent from my SM-G935F using XDA-Developers mobile app
What rom did you flash? Serial number is on the back of the phone isnt it?
Sent from my SM-G935F using Tapatalk
I flash renovate rom and serial number on the back of the phone is remove. I know what is my imei but i dont know how to put it in the phone. I think my imei and serial number is removed in efs folder because renovate rom use uk firmware and my phone needs nordic firmware but even if i flash nordic firmware with odin it's not solve the problem. I call samsung repair store and ask how much pay if they fix my phone and they say it's pay about 400-500€ so i try to find another solution fix that problem
Sent from my SM-G935F using XDA-Developers mobile app
No other solution works sorry been a few people losing there imeis now. None of the usual fixes work.
Sent from my SM-G935F using Tapatalk
Okay thanks for the answer.
Sent from my SM-G935F using XDA-Developers mobile app
I have the same issue. Frustrating that it cannot be repaired
Yeah thats probably right
Sent from my SM-G935F using XDA-Developers mobile app
After messing up my EFS partition, my wife took mine to a phone repair shop owned by an old friend of hers. He is pretty sure he can fix it. He has it today and asked that we collect it tomorrow. I have my doubts but we will see.
Okay i also must deliver My phone to phone repair store but first i need to collect money. I hope he can fix your phone.
Sent from my SM-G935F using XDA-Developers mobile app
CuBz90 said:
After messing up my EFS partition, my wife took mine to a phone repair shop owned by an old friend of hers. He is pretty sure he can fix it. He has it today and asked that we collect it tomorrow. I have my doubts but we will see.
Click to expand...
Click to collapse
Let us know how it goes. It will help others facing this problem.
Sent from my SM-G935F using Tapatalk
Don't worry guys the fix doesn't cost more than 20$ in my country hope It costs the same in yours
itll cost more than $20 if they have to use a box to repair. This is why i wont root this phone.
Sent from my SM-G935F using XDA-Developers mobile app
No luck, he could not fix it
Sad to hear that
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