Database Develop

[Q] Mobile network crisis after flash

So, I'm having some issues regarding my recently flashed XSP C5302.
Model: C5302
Android Version: 4.3
Baseband version: 8960A-AAAAATAZQ-40031007-18
Build number: 12.1.A.1.201
I'm on locked BL.
Thing is, I flashed it as soon as I got my hands on it due to that annoying flickering screen, tried to downgrade it to 4.2.1. It was the first time I did that, so I went through many tuts to get it right.
At first I flashed a .254 rom, and when I entered the About screen, model had switched to C5303. What I did was follow DoomLord's guide to root it, instal CWR and flashed a deodexed .254 rom for C5302(this one: http://forum.xda-developers.com/showthread.php?t=2423625). Everything back to normal.
But then I noticed my mobile data wasn't working, so I thought it may have been fault of the deodexed rom. Sooo, I upgraded it AGAIN to 4.3 using PC Companion, just to find out that the mobile issue was not having the APN correctly configured. Sigh.
And well, I'm now stuck again on 4.3, but at least my mobile data package is working. However, it's extremely slow. I mean, I can see the H and H+ icon, but even on H+ it takes ages to send messages and connect. At first I wondered if the baseband had anything to do with it, but when I flashed the rom I checked everything but Kernel and System, so...
So my question is, is it possible that I did something that "damaged" my mobile data connectivity? If so, could somebody please suggest any solution? I must say, my service provider sucks, so it could be their problem too, and I'm just here crying over spilled milk with no reason at all.
Thanks in advance!

Probably your service provider - I must have tried 100's of custom roms and whilst some have meant that data didn't work, this was caused by buggy software, never damage to the phone.

Parkside said:
Probably your service provider - I must have tried 100's of custom roms and whilst some have meant that data didn't work, this was caused by buggy software, never damage to the phone.
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Yes, I'm pretty sure too, but oh I was so damn worried! Thanks

Phone doesn't read my SIM

I have been using CM11 (14-03-2014 I believe), without major problems until yesterday. Sometimes my phone seemed to disconnect from my SIM and I had to re-enter my pin code to reconnect to my operators network. But as of yesterday my device doesn't seem to recognize the SIM card, It doesn't ask for a code at all and can't make any connection whatsoever. I didn't change a thing, this problem started out of the blue.
I wiped cache and dalvik, updated to the latest CM nightly (08-05) but that didn't make any difference. In other threads I read about the baseband that might need an update, but I can't check which version I have now because when I try to enter the hidden menu I get the no network connection error. The strange thing is that CM11 has worked with (I guess) the stock baseband.
Is my phone tripping or could it be that my SIM card is broken?
Help and thoughts will be very much appreciated

Try it on stock to be sure about it.

After some searching I found a phone that could fit a regular SIM card, a Blackberry 9900. My SIM worked perfect in this phone, so that is not the problem.
I Also did a complete wipe and installed a stable version of CM 10.1.3, but that didn't seem to help. I hoped that a downgrade would have done the trick. I might try a ICS ROM or the stock firmware, but I kind of lost hope and i'm starting to think this problem is hardware related in stead of software. I'll report back with results on stock firmware and the ICS ROM.
How can I make sure the SIM reader in my phone is working properly?

Sorry for double posting, but I got an update:
SIM wasn't working with ICS so I decided to go back to the stock ROM. However, when I tried to flash V20B.kdz with KDZ_FW_UPD, the program got stuck at wParam=2010 and iParam=210. The phone is now stuck in S/W Update mode, and I haven't found a way to restore it yet. I will argue a little more with my phone when I get back from work, I'll open a new thread on how to unbrick when I can't do it myself.

Beunhof said:
Sorry for double posting, but I got an update:
SIM wasn't working with ICS so I decided to go back to the stock ROM. However, when I tried to flash V20B.kdz with KDZ_FW_UPD, the program got stuck at wParam=2010 and iParam=210. The phone is now stuck in S/W Update mode, and I haven't found a way to restore it yet. I will argue a little more with my phone when I get back from work, I'll open a new thread on how to unbrick when I can't do it myself.
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My good friend i know i probably come 2 late but here is the anser 4 future users!!
http://forum.xda-developers.com/showthread.php?t=2069723
its supose to freese in ther!! (not ther but ....)

I have the same problem, and exactly the same error at reflash.
Dead end. Buy a new phone .
I tried to flash it about 80 times. One guy from a gsm repair has a bit luck and make it work at the first, but then, when he wanted to repair my imei, the phone stucked again in S/W Upgrade.

[I9295] Cellular not working

Hey guys,
in the beginning, sorry for my bad english (native german). I have a problem with my I9295 aka S4 Active. Since the update to 4.4.2, my phone gets thrown out of the network. Wlan and Bluetooth is fine. Now I flashed the official Samsung DOB4 firmware. Yes, I've downloaded the file multiple times, and the md5 sum was always right. After I flashed it, I was very happy because my cellular network was working again, I could make some calls, etc. But after 20 minutes, it started again. No network. Well, my IMEI was null, and to fix it I had to root. After rooting, my IMEI is there again (yes, the right one) and everything worked fine and was still working, up to yesterday. IMEI still there, baseband too, everything seems fine, but I can't get network. I have to reboot multiple times to get it working again, after that it's working maximum a day, after that, no network again . Atm, i've flashed CM12, but the error is still occuring. I'm very desperate, I hope somebody can help me.

I have a quite similar problem:
My I9295 loses service randomly. Happens quite often.
When I try to go to Settings/More Networks/Mobile Networks I am told "No SIM ..."
SIM is in and had been active. Phono tells me I have network reception.
After reboot it works for an hour or 20 minutes or whatever it wants to.
Sometimes it reconnects after a while, sometimes not.
When I leave it on during night netx morning reconnect works only via reboot.
SIM reader had been replaced.
Problem persists with genuine 5.0.1, with this one: [ROM][Official Nightly CM12/Unofficial CM12.1][5.0/5.1.1] builds for I9295
and WizCyan ROM.
Any suggestions?
BTW I use a TWRP recovery

Possible reason explained here
http://forum.xda-developers.com/showthread.php?p=56955843
Enjoy

Thanks for the hint.
Not sure if I get this. The problem was also there with the genuine Samsung ROM (lolipop)while the thread talks aout losing modem function after flashing custom ROM.
About previous I am not sure as I bought it used with 4.2.2 on it.
I updated to 4.4 and then 5 OTA, all genuine.
Only because the mobile kept on losing network I switched to custom ROM, but the problem persists.
At the moment I use the Pac-Man ROM 5.1.1 where it seems to be more stable.
Strange!

@augek
The linked thread isn't only about custom roms - you can end up with partly flashed baseband on genuine if you don't power off before download mode and flash using Odin.
Was the replacement job of SIM reader done by a qualified person?

Following your Suggestion i flashed the genuine lollipop with odin. Yes i switched of Prior to flashing.
And Yes the Person Who did the card reader Job is qualified.
Still the Problem persists.
So to me the question is if the Firmware (driver) is the Problem of my sim card. The sim i tried on my s4mini and doesn't cause Problems so far as far as i noticed.
P****es me of somehow.

Phone won't connect to network and custom roms don't work

So I think I messed up my phone.
TL;DR: Messed up phone by removing stock rom, Costume roms don't work except 1 and in that one IMEI is set to zero and I can't connect to any network.
several month ago I had the stock xperia z Lolipop and made a decision to root the device. I unlocked it's bootloader and did the rooting... all as planned. about a month later my phone started acting funny, so I decided to reset it, the problem is I had installed TWRP and as noob in using the app, I accidentally wiped the entire device. I thought I had bricked the thing so I left it aside.
I had been using an older phone as replacement until last week when I thought I'd give the Z another chance. I looked around this forum, found a bunch of stuff, tried a lot of roms and after failing to make 4 roms work (Cyan nougat, Cyan MM, Costumised sony 5.1.1 and a stock one I found here) I managed to find a fifth one that worked (http://forum.xda-developers.com/xperia-z/general/android-5-1-available-yuga-pabx-t3054304). I always followed the tutorials but I may have done a lot of mistakes... for example I'm not even sure what kernel is and if I needed to change it for any of the roms or if I needed to like wipe the entire system or not before flashing ( I did all the time), and what about rooting? does the system require a previous rooted rom to install new ones? don't we simply format the entire device?.
Now the major problem of the working rom is that my phone can't connect to it's simcard network, the simcard is working since it requires pincode on start and the phone can find the networks by manual search, it simply gives an error "network XXX unavailable". I looked around and saw that my IMEI is set to all zero's in the phone about section. this could be unrelated to the network problem... but I don't have much expertise in these stuff.
So right now it seems like I can't install any other roms (they won't even start up, most get stuck during boot) and the only one I can install doesn't give me network access.
Any Ideas?

LG G4 Loses Network After Root and ROM Installation

I recently rooted my H811 G4 (T-mobile) and then installed the latest Imperium ROM on it. Everything worked fine for three days. The only thing that kept popping up was an alert from Lookout, saying that the Imperium Settings app had riskware and wanted me to delete it. I just ignored the warning as I figured that it was being fussy over an app from a custom ROM. I also kept getting notifications to upgrade my version of Android but I ignored those too as I learned that with a rooted phone, it either won't work, or will unroot the phone. After 3 days, I suddenly lost connectivity to the T-Mobile network. Could still make calls and text over wifi, but nothing when the wifi was off. After going into the settings, it would say that the network was disconnected. I took the phone to T-mobile and they tested the sim card in another phone, to which it worked just fine. So that told me that something was obviously wrong with my handset. I restored the phone back to factory default and was able to make calls again. Imperium was still installed on it. So I went back into recovery and wiped the phone clean. After selecting to restart the phone in TWRP, I got stuck on the bootloader screen. So I downloaded LG Bridge and got it working again. I was going to wait till I got a notification to upgrade Android before rooting it again, but after 2 days, I never got it. Has anyone else had this happen? I thought Imperium was cool but I'm not thinking of just going with another custom ROM.

Musicman82121 said:
I recently rooted my H811 G4 (T-mobile) and then installed the latest Imperium ROM on it. Everything worked fine for three days. The only thing that kept popping up was an alert from Lookout, saying that the Imperium Settings app had riskware and wanted me to delete it. I just ignored the warning as I figured that it was being fussy over an app from a custom ROM. I also kept getting notifications to upgrade my version of Android but I ignored those too as I learned that with a rooted phone, it either won't work, or will unroot the phone. After 3 days, I suddenly lost connectivity to the T-Mobile network. Could still make calls and text over wifi, but nothing when the wifi was off. After going into the settings, it would say that the network was disconnected. I took the phone to T-mobile and they tested the sim card in another phone, to which it worked just fine. So that told me that something was obviously wrong with my handset. I restored the phone back to factory default and was able to make calls again. Imperium was still installed on it. So I went back into recovery and wiped the phone clean. After selecting to restart the phone in TWRP, I got stuck on the bootloader screen. So I downloaded LG Bridge and got it working again. I was going to wait till I got a notification to upgrade Android before rooting it again, but after 2 days, I never got it. Has anyone else had this happen? I thought Imperium was cool but I'm not thinking of just going with another custom ROM.
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Modem problem. Don't waste your time. Oreo is the latest build for TM-LGG4:
https://forum.xda-developers.com/g4/development/rom-lineageos-15-1-t3806629
Need TWRP to flash.