I am perplexed by an issue with my LG Flex 2 (H950) that has persisted since it was updated from Lollipop 5.0.1 to 5.1.1 (11x) via official OTA by AT&T. This occurs with or without root.
When I restart or reboot the phone, I totally lose my cell connection--no voice, no data--and "Mobile Networks" is grayed-out. If I perform a factory reset or delete telephony.db and its journal, the cell connection comes back and I can enter the "Mobile Networks" menu, though the APN list is empty. Resetting APNs to default does nothing, but I can manually add an APN and data works fine, including LTE. On the next reboot, the cycle repeats and there is no connection.
I have gone through 8 SIMS; four AT&T and four T-Mobile, and nothing changes between them. An AT&T rep verified the issue but referred me to LG. LG has had the phone twice under warrant and found no hardware problem. LG also updated the phone to firmware 11z.
The phone reads the SIM without any issue, though programs that read SIM will say no SIM is installed immediately after a reboot. I have also found that upon boot the phone seems to ignore apns-conf.xml, because renaming that file has no effect.
My only guess at this point is that the boot process is changing telephony.db (except immediately after a factory reset) in some way and looking to something other than apns-conf.xml for its APN data. I am currently rooted, because that is the only way I can use ES File Explorer to delete telephony. db.
Any help would be greatly appreciated!
icherub said:
I am perplexed by an issue with my LG Flex 2 (H950) that has persisted since it was updated from Lollipop 5.0.1 to 5.1.1 (11x) via official OTA by AT&T. This occurs with or without root.
When I restart or reboot the phone, I totally lose my cell connection--no voice, no data--and "Mobile Networks" is grayed-out. If I perform a factory reset or delete telephony.db and its journal, the cell connection comes back and I can enter the "Mobile Networks" menu, though the APN list is empty. Resetting APNs to default does nothing, but I can manually add an APN and data works fine, including LTE. On the next reboot, the cycle repeats and there is no connection.
I have gone through 8 SIMS; four AT&T and four T-Mobile, and nothing changes between them. An AT&T rep verified the issue but referred me to LG. LG has had the phone twice under warrant and found no hardware problem. LG also updated the phone to firmware 11z.
The phone reads the SIM without any issue, though programs that read SIM will say no SIM is installed immediately after a reboot. I have also found that upon boot the phone seems to ignore apns-conf.xml, because renaming that file has no effect.
My only guess at this point is that the boot process is changing telephony.db (except immediately after a factory reset) in some way and looking to something other than apns-conf.xml for its APN data. I am currently rooted, because that is the only way I can use ES File Explorer to delete telephony. db.
Any help would be greatly appreciated!
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Click to collapse
Greetings,
Thank you for using XDA Assist. I'm going to move your question to the proper device Q&A forum.
Good luck!
Related
My phone is Verizon xv6875, I am from China.
I made a Hard reset (by press and hold the Volume down, Send key and Power key, then Press the Volume up).
But after reboot the phone, it can not connect to a network services, says no service. I have a GSM SIM Card with China Mobile service.
I've tried different networks with SIM cards which are working well with other phones.
Also I have tried my GSM SIM Card with other phones, and it works well.
I have reflashed a custom ROM, sim card detected, and switch to global mode. but still no service.
Verizon xv6875:
Radio verison:1.96.0ESN
PRL verison:00202
PRI verison:1.42_003
ERI verison:5
SPL-1.00.01iNEX
Anybody can help me!!!?
Thanks!
Today I have updated RPI
PRI verison to 2.20_003
The problem persist,
then i updated Radio version to 2.37.00WV
The problem persist...
I do not know how?
Anyone can give me some suggestions?
I need your help!
I have contacted with HTC, and I was told this device was customer made by a personal company.
But show Verizon logo at the top of this device.
Hard reset (Not System Wipe device) may lose something in RAM.
And dial *228 nothing happened.
Is it needs to activate the phone?
What I can do?
I have reflashed a Chinese Arlen's patched radio, after rebooting shows Radio 1.96.0ESN, but still dos not work.
With help of "Xiaolei", a Chinese people, My device is working fine now.
It is need to use QPST-Software Download to restore Data backup from a device working fine, and reboot.
So, Verizon xv6875 we cannot make Hard reset, it my lost some network data.
Thanks and Merry Christmas!
My Xt897 has a HARDMOD to use brazilian SIM card (vivo), unlocked, rooted and still with 77.6.36.XT897 SW version (I'm afraid to do the automatic motorola upgrade that's appears every time on wi-fi)
I can't configure my APNs to Vivo (brazil). the configuration screen not save any information every time that I try and all list of apns still blank...
I tried edit the apn file, but changed or erased the file nothing happens on the configuration apn's screen
any suggestions?
thanks a lot!
I had this issue on my phone when i played with switching from sprint back to gsm a few times and only thing that worked was a full reset. once you reset it set it to gsm only and the appns should be blank at this point you can add your new apn. you can also try to remove all aps there is like 7 of them under gsm only then power down phone and restart and see if they stay blank. once they are blank then you can add your apn.
lrpontes said:
My Xt897 has a HARDMOD to use brazilian SIM card (vivo), unlocked, rooted and still with 77.6.36.XT897 SW version (I'm afraid to do the automatic motorola upgrade that's appears every time on wi-fi)
I can't configure my APNs to Vivo (brazil). the configuration screen not save any information every time that I try and all list of apns still blank...
I tried edit the apn file, but changed or erased the file nothing happens on the configuration apn's screen
any suggestions?
thanks a lot!
Click to expand...
Click to collapse
U can fix it? I have not been able to fix it... any suggestions? help please:crying:
So one day, my Nexus S randomly decided not to have a data connection with my carrier (Wind Mobile) anymore.
Wifi works, mobile data does not.
Steps I did to try and fix this:
1) make sure APN address is correct, which it is.
2) turn airplane mode on and off
3) toggle carrier connection on and off
4) factory wipe phone and reinstall ROM (slimkat)
5) factory wipe phone and install a different ROM (AOSP)
6) flash new radio (KB3 and KB1)
Other things I tried:
1) tried my SIM card with another phone (Blackberry Curve), data connection seems to work fine on that phone.
2) Called Wind Mobile and asked them to reset their towers to my phone... all they did was remove the Blackberry security thingy
that I had with them when I was still using a Blackberry. Rebooted my Nexus S, tried again... still no data.
So... I'm at my wit's end, and I have no clue how to fix this. Any ideas? I've found a couple similar threads for this problem... non of which had a solution to mine.
I remembered I made a backup nandroid a little while ago... and I restored it.
Voila, everything works again. But as soon as I tried reflashing to my preferred ROM (Slimkat), the problems started up again.
I also forgot to add that before I started encountering problems, my phone froze and I had reset by doing a battery pull because it wouldn't respond to any key presses. I'm guessing it corrupted something, though I'm not sure what. I've diagnosed that this is not a hardware issue, and that it's purely software... I'm not sure why the problem comes back when I reflash to another ROM. I'll keep you guys posted.
One other thing worth noting is that when I have Slimkat installed, it doesn't seem to read off my SIM card properly.
The APN doesn't get named "Wind DATA" like it usually does when I install a different ROM on there; it just gets named "Internet".
Short and sweet. I am unable to activate data all of a sudden on Sprint. My other family member's phones work fine, but I cannot update the profile or the PRL. It just says "Network Error, try again later." Phone calls work fine, and my baseband and all that jazz are showing. It also shows 3G occasionally, but it still says network disconnected. Any ideas would be greatly appreciated. Thanks!
Update: I've reflashed EFS, and that seems to get me data on most ROMs, except Android L and stock 4.4.4. The second they try to do hands-free/update profile or prl, the update fails and I can't get data. Any ideas? Could it possibly be my SIM card? What's weird is that even when I have a data connection(like on the restored efs), I still can't update profile or PRL...
I've searched the internet for the past week, and nothing has worked. I haven't had a chance to call Sprint and complain, but this is starting to be quite frustrating. I've had data the whole time, but I still can't update profile/prl or complete the hands-free activation. So I can't even go back to stock, because when I do the factory image, the hands-free fails.
Eww sorry man. Probably APN.
Sent from my Nexus 5 using XDA Free mobile app
What the.... So apparently sometime last night, my PRL updated on its own, like it's supposed to(old one was from old efs restore). But I still can't manually force the two to updates. So hands-free still fails upon a reset. This practically confirms that my phone is fine, because clearly it can receive the updates, just not pull them down. I'll call them today and #blamesprint.
APNs should be restored upon efs flash right? If not, how do I check them? The APN menu in settings doesn't appear when on the Sprint network.
Koopa777 said:
What the.... So apparently sometime last night, my PRL updated on its own, like it's supposed to(old one was from old efs restore). But I still can't manually force the two to updates. So hands-free still fails upon a reset. This practically confirms that my phone is fine, because clearly it can receive the updates, just not pull them down. I'll call them today and #blamesprint.
APNs should be restored upon efs flash right? If not, how do I check them? The APN menu in settings doesn't appear when on the Sprint network.
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Click to collapse
You'll have to download an APN app off of the Play Store. When I had Sprint there was weird issues with the bearer field. Also they have like 4 different APNs stock and there was one like i.ispnt or something that seemed to work but you had to select between bearer EHRPD (LTE network routed EVDO) or LTE.
All APN apps are giving me an error saying SIM card unknown, even when installed to system. One even says Virgin Mobile. Could this be an issue with my SIM card?
Could be a problem with your SIM card. I'd just take it into a Sprint store quickly and get it resolved.
I fiddled with APNs, there were 12 there(!), so I reentered the correct 5 and could reliably get data. I factory reset and now my phone is unprogrammed(no MIN and wrong phone number), I'm just going to go yell at Sprint now. :fingers-crossed:
Sprint was useless, the tech kept blaming the phone, saying things like "Nexus phones don't have dialer codes" and "your IMEI is bad(WTF?)", then she noticed the padlock on the boot screen where she refused to go further, saying that I tampered with my device. After I informed her that it was MY device(purchased unlocked from Google) and that Sprint had no legal claim to that device, she redirected me to Advanced Phone Support. She also refused to give me a new UICC card, saying that "it couldn't be the problem." I'm done with Sprint for the week, so I'm just going to go custom again and just set the APNs properly each time. Even on stock/L, I can just flash the Sprint APN zip to automatically fix them, correct? If so, where could I find the latest APNs? The latest zip I have is from March or so I believe. Thanks!
Also out of curiousity, how hard do you think it would be to force my way out of a contract ETF-free? I figure if they can't prove it's my device that's faulty, and they aren't giving me a product that I'm paying for.......
Koopa777 said:
Sprint was useless, the tech kept blaming the phone, saying things like "Nexus phones don't have dialer codes" and "your IMEI is bad(WTF?)", then she noticed the padlock on the boot screen where she refused to go further, saying that I tampered with my device. After I informed her that it was MY device(purchased unlocked from Google) and that Sprint had no legal claim to that device, she redirected me to Advanced Phone Support. She also refused to give me a new UICC card, saying that "it couldn't be the problem." I'm done with Sprint for the week, so I'm just going to go custom again and just set the APNs properly each time. Even on stock/L, I can just flash the Sprint APN zip to automatically fix them, correct? If so, where could I find the latest APNs? The latest zip I have is from March or so I believe. Thanks!
Also out of curiousity, how hard do you think it would be to force my way out of a contract ETF-free? I figure if they can't prove it's my device that's faulty, and they aren't giving me a product that I'm paying for.......
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Click to collapse
thats easy force it to data roaming and start streaming the heck out of anything and everything overnight. Sprint will terminate your contract if your roaming data is consistently to high.
I have a Samsung Galaxy A5 2017 SM-A520W, which I recently bootlooped and had to reinstall the firmware using Odin. However, when I restored my nandroid backup, the SIM card refuses to be recognized. It works in my other phone however (which I temporarily switched it while I fixed the samsung). So I tried resetting network settings, clearing the cache and other suggestions, until I finally decided to just factory reset the rom and see if it recognizes it from a clean OS, and it didn't. I can't see any reason why the hardware would be broken, since all I did was take the SIM card out and put it back in.
So then I thought about the firmware. I got it from here, which has a ton of different product codes for different carriers and countries. I'm in Canada on the Fido network, so that's what I chose (FMC). But Fido is owned by Rogers, which is a different product code (RWC)... So I'm wondering if choosing the wrong firmware will actually prevent the SIM card from being recognized? I can't understand why it's not recognizing it. >.<
Any ideas?
Thanks!
Have you checked the APN name and settings?
Hmm, I'm not sure I understand, can you explain further?
Tab_Triggerhappy said:
Have you checked the APN name and settings?
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Click to collapse
I mean the settings for the carrier like mmsproxy and ipv4, etc...
It's a longshot but it's in settings and network settings - mobile data.
I do not know exact english words used... Accesspointname if directly translated.
Describe more about phone behaviour.
Do you get same notifications as when no sim in phone?