Hi all.
I'm asking for your help in solving my S4 (I9505 jfltexx) problem: it's working only in 2G mode, no 3G, no 4G.
This suddenly started 15 days after the last flash, when I installed the Imperium ROM (ver 10.1) with the Philz Recovery 6.59.
So, I begun searching, googling, following procedures, flashing modems, roms, but I can't solve my problem.
My IMEI is OK, the SIM works in another phone, with a different operator SIM my S4 behaves the same, so is definitely a phone issue.
The *#0011# Service Mode shows the LTE and UMTS frequencies and cells IDs and that, I think, means that the hardware is working and that the phone has a software issue.
Tried Imperium 11.0, LolliROM 6.0, Resurrection 5.5.8, Cyanogen 12.1, brand and no brand Stock (all Lollipop ROMs), different modems.
I didn't downgrade because throughout my readings (a lot) about this issue, no one solved the problem this way.
Tryed this procedure
http://forum.xda-developers.com/galaxy-s4/help/i9505-doesnt-3g-t2998527
with no success.
I forced the phone in WCDMA mode and, using the QPST and QXDM, I observed the event log.
This IMHO is the interesting part:
EVENT_WCDMA_L1_STATE----->L1M_FACH
EVENT_RRC_MESSAGE_SENT--->Logical Chan: UL CCCH Signal Msg Type: RRC_CONNECTION_REQUEST_MSG
EVENT_WCDMA_RRC_STATE---->Previous state: Disconnected, New state: Connecting
EVENT_WCDMA_PRACH-------->RF Tx Power: 24, Number of preambles: 10, AICH Status: No ACK
[this last event repeated several times until]
EVENT_WCDMA_L1_STATE----->L1M_IDLE
EVENT_WCDMA_RRC_STATE---->Previous state: Connecting, New state: Disconnected
A lot of people, considering just this forum, complains about this problem but I was not able to found a working solution.
I hope someone can help me because I don't have any further ideas or clues.
Anyway, thanks in advance.
New attemps made:
downgrade to 4.4.2, flash of various Kitkat modems, new upgrade to Lollipop, deep clean (here in italian http://bit.ly/1MRu7lk).
When I tried to restore an NVM backup, previously made by QPST, the procedure failed at 5% due to "Received an invalid command from the phone".
In this way, I completely lost the baseband functionality and the IMEI, without being able to restore them even with an EFS backup, made by Philz recovery.
I re-tried this procedure http://forum.xda-developers.com/galaxy-s4/help/i9505-doesnt-3g-t2998527 and the SRS tool. The only way to have back IMEI and baseband has been to go in a shop where the guy used a Z3X box but, again, without restoring 3G-4G.
I definitely ran out of options now.
same error here!
any ideia?
phranqo said:
New attemps made:
downgrade to 4.4.2, flash of various Kitkat modems, new upgrade to Lollipop, deep clean (here in italian http://bit.ly/1MRu7lk).
When I tried to restore an NVM backup, previously made by QPST, the procedure failed at 5% due to "Received an invalid command from the phone".
In this way, I completely lost the baseband functionality and the IMEI, without being able to restore them even with an EFS backup, made by Philz recovery.
I re-tried this procedure http://forum.xda-developers.com/galaxy-s4/help/i9505-doesnt-3g-t2998527 and the SRS tool. The only way to have back IMEI and baseband has been to go in a shop where the guy used a Z3X box but, again, without restoring 3G-4G.
I definitely ran out of options now.
Click to expand...
Click to collapse
phranqo said:
Hi all.
I'm asking for your help in solving my S4 (I9505 jfltexx) problem: it's working only in 2G mode, no 3G, no 4G.
This suddenly started 15 days after the last flash, when I installed the Imperium ROM (ver 10.1) with the Philz Recovery 6.59.
So, I begun searching, googling, following procedures, flashing modems, roms, but I can't solve my problem.
My IMEI is OK, the SIM works in another phone, with a different operator SIM my S4 behaves the same, so is definitely a phone issue.
The *#0011# Service Mode shows the LTE and UMTS frequencies and cells IDs and that, I think, means that the hardware is working and that the phone has a software issue.
Tried Imperium 11.0, LolliROM 6.0, Resurrection 5.5.8, Cyanogen 12.1, brand and no brand Stock (all Lollipop ROMs), different modems.
I didn't downgrade because throughout my readings (a lot) about this issue, no one solved the problem this way.
Tryed this procedure
http://forum.xda-developers.com/galaxy-s4/help/i9505-doesnt-3g-t2998527
with no success.
I forced the phone in WCDMA mode and, using the QPST and QXDM, I observed the event log.
This IMHO is the interesting part:
EVENT_WCDMA_L1_STATE----->L1M_FACH
EVENT_RRC_MESSAGE_SENT--->Logical Chan: UL CCCH Signal Msg Type: RRC_CONNECTION_REQUEST_MSG
EVENT_WCDMA_RRC_STATE---->Previous state: Disconnected, New state: Connecting
EVENT_WCDMA_PRACH-------->RF Tx Power: 24, Number of preambles: 10, AICH Status: No ACK
[this last event repeated several times until]
EVENT_WCDMA_L1_STATE----->L1M_IDLE
EVENT_WCDMA_RRC_STATE---->Previous state: Connecting, New state: Disconnected
A lot of people, considering just this forum, complains about this problem but I was not able to found a working solution.
I hope someone can help me because I don't have any further ideas or clues.
Anyway, thanks in advance.
Click to expand...
Click to collapse
Hi, I'm having the same problem with my i9515. But, I think that my case is that this phone was bought in Poland and I live in Brasil, so, maybe is not the same frequencies, because I've tested a lot of things and nothing made my 3g or 4g works.
=/
Sorry, I gave up: as said, even with a Z3X box it was impossible to repair the phone and I stopped to look for answers.
=(
I have the same problem here. Everything works, wifi, network, but the Mobile Data is on gsm speeds. I think i bought it broken like this (2nd hand) as i tried various rom and kernel combinations with no luck.
The same happened to me, after updating the baseband. it's not a hardware problem
Hello
I owned/own a GT-i9505 which had recently gotten a board failure. The device would constantly turn off, and hitting it used to temporarily fix it, but it ended up getting so bad the phone wouldn't work at all. In response to this, I pulled a old smashed S4 out of my draw, and assumed it was also an i9505 (The board on this one says i9505 too), and replaced my old board with it. Upon booting, I discovered it was actually an i9507, a variant with what I assume only more advanced LTE capabilities. I thought this was cool, but upon the phone starting, I have no service. This is on official Optus firmware with nothing changed at this point. My services sometimes changes from the cross to the empty signal indicator. I've now tried installing CM13 on it to see whether maybe it was a rom specific thing, but alas I have no service still.
Any help would be appreciated
Gynganynja
Is the phone running the latest stock rom? Imei is properly displayed from the dialler? What is the model number in download mode?
I am currently downloading the latest stock rom, but it was running stock kitkat before I flashed CM13. The IMEI correctly displays
Edit out your imei, It's not a good idea to post your imei anywhere on the Internet.
Let us know if the stock ROM solves the issue.
My Nexus 6P has begun to periodically lose all cellular service (Verizon LTE) for no apparent reason. If I reboot the phone, service is restored. Turning airplane mode on and off doesn't help.
My phone is currently running Android 7.0 build NBD91V with the most recent patch on 12/5/16.
Has anyone else seen this problem or know how to fix it?
JWadle said:
My Nexus 6P has begun to periodically lose all cellular service (Verizon LTE) for no apparent reason. If I reboot the phone, service is restored. Turning airplane mode on and off doesn't help.
My phone is currently running Android 7.0 build NBD91V with the most recent patch on 12/5/16.
Has anyone else seen this problem or know how to fix it?
Click to expand...
Click to collapse
It's a known issue. If you Google it you’ll find others including myself with the same problem.
https://forum.xda-developers.com/nexus-6p/help/experiencing-random-signal-loss-t3540771
JWadle said:
My Nexus 6P has begun to periodically lose all cellular service (Verizon LTE) for no apparent reason. If I reboot the phone, service is restored. Turning airplane mode on and off doesn't help.
My phone is currently running Android 7.0 build NBD91V with the most recent patch on 12/5/16. Has anyone else seen this problem or know how to fix it?
Click to expand...
Click to collapse
The OP of that link is on Project Fi and on different carriers than you so it may not be a complete match with your issue. The new January update N4F26J is designated specifically for Verizon devices and includes a new baseband version (radio 03.79). The radio apparently resolves some issues specific to your carrier- so I would start there. Update your phone and confirm you are on the new radio. If it was working fine earlier, you may also want to try reverting to an earlier radio from a time when your phone was working normally. I would also recommend trying LTE Discovery. The free version has most functionality you would need to identify all the towers in your area, what bands are available and the signal strength of each. Good luck. :good:
So I had an interesting experience with the same thing. Was running a custom rom that is very close to stock and updated to the most recent security update. Shortly thereafter, my carrier connection would drop (didn't notice at first because if I was connected to WiFi, it would be hard to tell). Only a reboot of the phone would fix it, for often no more than an hour or 2. So I started by wiping the device. Then I went to a different custom rom. And then finally, I went back to stock using "flash-all.bat" from the factory image. But alas, the issue continued. The last thing I did, which seems to have resolved it so far (12+ hours without a disconnection), was to relock my bootloader. Just in case it helps someone else. Is it possible that the new radio + an unlocked bootloader is causing the issue?
Hi all,
I'm having the infamous "not registered to network" problem in a SM-G935FD so I installed a rooted ROM (King) and other rooted stock ROMs without luck, still not network.
I'm trying to use the Ariza Patch but says the phone is not rooted... bur in fact the phone is rooted and verified.
Maybe I have an old Ariza version ? Where can I get the newer ?
Some ideas to test and fix the network problem ?
IMEI seems to be clean and OK... not blacklisted, APN is in place OK... I can see the networks fine, but can't connect.
I can assure the phone works... I bought the phone with Android 6 working fine. the problem appeared after update to Android 7... seems the phone was patched, but I don't know what...
Thanks....!!!
Javier.
I have the same problem, were you able to resolve yours?
I've same problem, i've got signal, full, but emergancy call only. Ariza patch solve your problem dude?
Same problem here.
I'm having the same problem guys..did anyone find a fix for ariza or the s7 not registering on network after imei change?
Good evening,
the problem my be known, but till now, I have not found a thread where a solution is presented. Now let's dive into my problem. Some days ago, I experienced the problem, that I am frequently using my network signal. Till that time, I was using the Firmware version 10.0.6 and the RR 7.0.1. I thought, maybe an Firmware update would resolve this issue, and I flashed the Firmware version 10.0.7 but the issued did not get fixed.
Yesterday I did an clean install of the ROM with the following steps: Firmware 10.0.7->ROM RR7.0.1->recovery TWPR->reboot recovery->Gapps->Magdisk->reboot system but even now I'm loosing my network signal from time to time. Is there an solution for this problem? Tomorrow I want install the SyberiaROM in order to verify if the problem is still present.
What could be reason for this problem? I already checked my IMEI numbers and both are matching with the sticker on the phone. Could it be, that my SIM tray is defect?
I had that problem and tested everything... Had to change my service provider to get stable signal.
You can try installing stock Pie, then downgrading to stock Oreo. If signal is good on Oreo, it is not a hardware issue. But if issue is still there, try changing your carreer. Still don't work? Bring your phone to the service center.
Sent from my Mi A1 using XDA Labs
Since January I am having the same problem, I can not make calls or receive them either.
After I installed the ROM clean the problem is still present. When I lose my signal, I can hit the airplane toggle twice and then I get my signal back. It's not really an workaround.