So let me start my admitting my mistake. I tried to install a stock image as a secondary ROM using MultiROM. Obviously it didn't work, and I deleted the installation. Everything seemed to be fine, but once I booted back into my current ROM (LOS 14.1) and no longer have any cell signal whatsoever. According to my SIM Status, I am Disconnected.
I tried resetting my Network Settings which didn't help. I'm at the point of trying a fresh install, but wanted to see if anyone had any thoughts first. Could I try flashing the radio?
Related
Hey there guys, I apologize if this has been covered, as I feel its related to an "efs" folder type of issue. I'm just not quite sure where the hell to even begin searching.
I've been on 4.3 since the leak and have been using Cataclysm 4.3 JWR ROM for a while now, problem free. All was running great until yesterday I was downloading some media and transferring it to my laptop (~10gb of traffic before I noticed the problem), and my WiFi shut off and restarted itself. My mobile data kicked in at that point for all of 10 seconds until the WiFi reconnected and within 30 minutes my signal bars suddenly dropped to zero and calls couldn't be made. "Mobile network not available." message appears. So I figured i'd pull the SIM, replace and reboot. When that didn't work I tried rebooting without the SIM, to see if it would detect no SIM card and prompt me to put one in and reboot to be able to connect to mobile network. Well nothing was detected. A full wipe, reflash of identical ROM, reflash of updated ROM, reflash of original JWR deodexed & rooted backup, all with the same outcome. I have tried everything short of downloading the stock image and flashing that but I haven't got around to it since I haven't had time to backup my internal SD before losing all data. I should note that I'm on baseband .84/4.3 bootloader and have been since Google pushed JWR & JSS. I haven't tried flashing a new modem, I figured that wouldn't been an issue. I suppose I'll try flashing .48 and update.
Edit: I forgot to mention that yes, WiFi is in fact working. Mobile signal seems to be the only thing affected.
Edit: Reflashing baseband .84 and .48 didn't work.
I really appreciate any ideas guys, I'd like to sort this out rather than having to flash stock and RMA it or something :/
All settled, it was an issue with the frequency band my provided operates on. Mod can lock/delete thread thanks.
Sent from my Nexus 4 using xda app-developers app
I'm currently having issues where it seems that my APN settings aren't sticking. My cellular service & data work fine until I go into an area where I lose service & then when I reenter the service area my data won't switch back on. & sometimes it seems to lose data for absolutely no reason. But if I go into *#*#data#*#* & restore default APN settings & reboot my data works again. I'm on sprints network, using screwd rom, latest milestone build, the latest bootloader, & the latest radio. I've tried update prl. Ive tried update device configuration & when i update device configuration after it finishes I lose both data & cellular service until I reboot. I've tried performing "hands free activation" which also causes me to lose cellular service until after I reboot again. I've clean flashing rom & gapps, even tho I don't think its rom related. Reflashing the latest radio IMG. My next step is restoring the device to a google stock factory img & then starting all over. Anyone who has any suggestions I would greatly appreciate the help.
Upon further research it appears to be a bug in googles code affecting aosp ROMs. Doesn't affect all aosp ROMs tho. No known fix yet
So, I was using my phone at a mall. I stepped into a store and I noticed I had no more LTE. The signal was weak, so I thought it was just the building. So I got to a stronger area and restarted the phone, and still no data. I tried restarting several times and I tried selecting different APNs (I'm running 7/15 nightly of CM13). Eventually, I took the sim card out of my wife's iPhone 6S and the LTE worked fine. My sim card worked OK in here phone as well. But once I put mine back in, I have no data (not even 2g or 3g). I thought it was just my sim card, but then I can't understand why it works in my wife's iPhone 6S. Any ideas? I'm updating to the latest nightly of CM13.
ambig88 said:
So, I was using my phone at a mall. I stepped into a store and I noticed I had no more LTE. The signal was weak, so I thought it was just the building. So I got to a stronger area and restarted the phone, and still no data. I tried restarting several times and I tried selecting different APNs (I'm running 7/15 nightly of CM13). Eventually, I took the sim card out of my wife's iPhone 6S and the LTE worked fine. My sim card worked OK in here phone as well. But once I put mine back in, I have no data (not even 2g or 3g). I thought it was just my sim card, but then I can't understand why it works in my wife's iPhone 6S. Any ideas? I'm updating to the latest nightly of CM13.
Click to expand...
Click to collapse
My suggestion is to start fresh by fastboot flashing the latest 6.0.1 factory images. Verify that your mobile data/LTE are working. Then, install TWRP. I would also download a fresh copy if the CM13 ROM and verify the md5 is correct. Flash CM13 again and see if you have LTE again. If you don't have LTE after flashing CM13 again we know it is something that has changed in the ROM.
Sent from my Nexus 6 using XDA-Developers mobile app
fast69mopar said:
My suggestion is to start fresh by fastboot flashing the latest 6.0.1 factory images. Verify that your mobile data/LTE are working. Then, install TWRP. I would also download a fresh copy if the CM13 ROM and verify the md5 is correct. Flash CM13 again and see if you have LTE again. If you don't have LTE after flashing CM13 again we know it is something that has changed in the ROM.
Click to expand...
Click to collapse
I think you're right. I'm going to have to do this. I got a new SIM card from Verizon and data was fine. Then once I went to work and entered into my office, which has a poor signal, I wasn't able to get data back (can still call and send/receive texts). It makes no sense as to why it won't reconnect after a reboot, but I guess this is the only option.
Yeah I agree. Fastboot flash the factory images to give yourself a fresh start. Confirm that everything is working on a fully stock build. Then root, recovery and flash. I would try a different ROM that is not CM based to see how your voice and data works. Let us know how it goes that way others in the forum who may run into this issue can read about what was performed on your device and know what to do to help themselves. Good luck.
Sent from my Nexus 6 using XDA-Developers mobile app
fast69mopar said:
Yeah I agree. Fastboot flash the factory images to give yourself a fresh start. Confirm that everything is working on a fully stock build. Then root, recovery and flash. I would try a different ROM that is not CM based to see how your voice and data works. Let us know how it goes that way others in the forum who may run into this issue can read about what was performed on your device and know what to do to help themselves. Good luck.
Click to expand...
Click to collapse
So I flashed the factory images back onto my phone and I got data back. I guess there is a strange bug in the latest nightly of CM13. Of course, I haven't been able to go to an area where I have poor reception. Now I have to find a ROM that offers the LiveDisplay feature CM13 offered. I like my screen to be a bit colder than what Huawei calibrates their displays to.
ambig88 said:
So I flashed the factory images back onto my phone and I got data back. I guess there is a strange bug in the latest nightly of CM13. Of course, I haven't been able to go to an area where I have poor reception. Now I have to find a ROM that offers the LiveDisplay feature CM13 offered. I like my screen to be a bit colder than what Huawei calibrates their displays to.
Click to expand...
Click to collapse
I knew there was something in the CM13 based ROM's that was causing you to lose data. Also, If you use a custom kernel like Elemental or Elite you can control the screen colors and make it how you like it. Give Pure Nexus a try. It's a super nice ROM. The dev is awesome. He does great work. Maybe give Chroma a shot. Also, you could try Resurrection Remix. It's a CM based ROM but it may not give you the data issues. It's worth a try. Lemme know what works. Good job on getting the factory images flashed and getting data back too.
Sent from my Nexus 6 using XDA-Developers mobile app
SOLVED!
First I apologize for the English, I'm using google translator.
Hi everyone, I really need help. Yesterday I used adb to reinstall the stock rom oreo 8.1 (XT1683 POTTER RETRO 8.1.0_OPS28.85) everything went well, until the cell phone started... After installing the rom, I realized that my 4G doesn't work anymore, only the network 3G. When I put on the LTE(4G) network, the network is without signal. I installed more than 4 custom roms in an attempt to restore the 4G signal, but none of them worked. Reading some things here on the forum, I saw that it may have corrupted something in the file system, but I didn't find any solution. My IMEI is normal, the only problem is the 4G network that doesn't work anymore. Anyone have a solution? I don't have any files backed up. I'm currently using the custom rom (dotOS-R-v5.1.1-potter-GAPPS-20210614-0527) and I still have the same problem.
Anyone have a solution? If there is a solution and it is on video, even better. But it can be in text too. thanks in advance
Edit: Now I'm totally out of signal, just Wifi. My IMEI is normal, but I don't have a SIM card signal.
Edit²:
Problem solved.
How did I solve the problem?
I kept installing and reinstalling several roms and nothing worked. So I decided to install the Nougat 7 flashable rom, that's when after installing I realized that the 4g network was re-established. I immediately restarted the phone in recovery mode, accessed TWRP and saved the EFS file to the memory card and a pendrive. I reinstalled the custom rom I wanted and the network stopped working again, I checked and the IMEI was 0 so I restored the EFS file that I had backed up on Nougat 7, and it worked perfectly in the custom rom.
But another problem appeared, the fingerprint did not work. So I reinstalled the custom rom and it didn't work, I reinstalled the Nougat 7 flashable and the fingerprint came back, but when I installed the custom rom again, the fringerprint was disabled again.
To solve the fingerprint issue, I installed the Oreo 8.1 Flashable Rom and then installed the custom rom and the fingerprint issue was resolved.
NOTE: My LTE/4G network was only re-established because my IMEI was not reset, for this reason I managed to save the EFS file and restore it to the custom rom. I don't know it will work on devices with IMEI RESET.
Flashable Roms used:
Nougat 7 Flashable - POTTER
potter-twrp-flashable-NPNS25.137-93-18-aroma
Stock rom Flashable Oreo 8.1 - POTTER
potter-twrp-flashable-OPSS28.85-17-6-2-aroma
I used the roms from this topic: https://forum.xda-developers.com/t/nougat-stock-rom-twrp-flashable-stock-builds.3813351/
Thank you so much @NZedPred , your topic saved me.
I had latest stock firmware and everything was working fine except it wasn't getting any updates so I decided to flash Linneage. I followed instructions, made sure to flash the copy-file on both slots etc. Everhything seemed fine untill I left my home and didn't have access to wifi, then I noticed that data didn't want to work. It showed having 4g connection (full strength) but it was so slow that I couldn't even check speed because the homepage barely load. There was a connection but since it was so slow I received timeouts almost everything I tried. I also noticed that bluetooth didn't work. It would connect/disconnect every 3 seconds from my bt headset. This was "fixed" by disable google on my phone. Very strange.
I thought It might have to do with Linneage so I tried Pixel experience. Exact same problem there.
I thought maybe the linneage files I flashed to both slots were bad so I reflashed stock rom. Now I have the same problem with stock rom as well. I eventually used the MSM tool and reflashed the latest stock firmware, locking the bootloader and all that. Still having the same problems. These two problems were non existant before any of this.
I've tried my sim in a different phone, even made sure the apns are the exact same on my working phone and my op6t.
Is there any other way to make sure the phone is completely factory restored other than MSM tool? Now I'm running stock oxygen, no root, locked bootloader etc but the problem persists. What is my next step to try?