[H870] Can't turn on radio signal - no cell reception - LG G6 Questions and Answers

Hi everyone, my H870 has seemingly given up on me out of the blue since about two days ago and refuses to connect to mobile networks, or even to search for them for that matter (trying to manually search for networks give back an error). I'm afraid the issue might be hardware-related which would be a shame as the phone is otherwise fine. I've tried changing ROMs (going from and old AEX AOSP to LineageOS, with full wipe) as well as kernels (Melina reborn for AOSP), to no avail.
Switching sim cards also didn't change anything, the sim is detected and it asks for PIN but then no network, which leads me to think it's a radio chip issue. Activating radio in the *#*#4636#*#* menu doesn't prompt the usual restart, and auto-untoggles if i go into another app then come back to it... IMEI is fine and not corrupted.
I'm really close to giving up on this phone and buying another one, but I thought maybe you guys would have another idea of something to try that could work before I do that. Couldn't find any similar threads on that matter but please point me in the right direction if this issue has popped up before !
Thank you in advance for your help.
EDIT : Flashed original firmware (H87030a_00_OPEN_EU_OP_0829.kdz), to no avail... I believe this is the end of the road for this phone and judging by the lack of answers you guys do as well haha

H873, should not have reset. Now i dont know too

Related

Orbit WLAN not working and calls cannot be made or received

Hi Guys,
Please help! I have an XDA Orbit that I have put various different ROMS that I have experimented with. Now I have one that I like I am having a couple of issues.
Firstly, I cant make or receive calls with any SIM card in the phone. It is showing as full reception and does fluctuate as it should but can't make calls. When dialling it just makes 3 beeps after a few seconds and cuts off. Not even emergency calls can be made.
Secondly, although I beleive related to the above, my WIFI does not work. I switch it on and get the hour glass but then nothing happens.
I have re-flashed ROMS to it but to no avail. Even the orginal ROMS but still it does not go away. I will try GPS later today to see if it works and will post results.
I have flashed all radio versions hoping it will solve the problem but hasn't.
Any ideas?
WLAN not working now
Hi Guys,
Answering part of my question myself here but just to let you know the update.
I have managed to fix the calling out and not receiving call issue.
It seems that when I was experimenting with different ROMS on my Orbit I somehow managed to corrupt the IMEI number on the phone. This was causing it to think it was a 'barred' or 'blocked' phone. Therefore not allowing calls.
Quick search on this forum and I found a tool called 'Wizard Service Tool' and changed the IMEI back to orginal and all working fine now except...
WLAN is not working. I suppose the MAC address may have been corrupted also? Anychance I can check this? Or does anyone know how to restore it? I will be searching all day for this so any assistance will be appreciated.
If I manage to fix I will post my results.
You know you can just reflash the radio, you could try the latest version it may help. It is dead easy to find. It will have new wifi, bluetooth, and gsm.
I have tried to flash radio/new rom/hard reset to no avail.
It is a problem with the mac address on the phone. for some reason it gets wiped/corrupted when installing\experimenting with the vanilla roms.
but thanks for the suggestion anyway
any suggestions?
Guys any suggestions????????????

Signal is vary bad

About few weeks ago my Htc Tattoo signal become to be very bad or sometimes full gone. Tried to flash different ROMs, insert different SIM cards, but nothing changes, signal is bad too. When i bought the phone, signal was perfect, becouse I live in a center of the city. So, please, maybe anyone know what the hell is wrong with my phone?
I heard, that it is possibility to reinstall something radio rom. Said, that can fix the problem, but where should i find it?
I have the same problem here. At the time i use the original HTC ROM my phone was connected with 3G and/or HSDPA, but now with fyodor i have the problem that the best connection is 3G.
I don't know how to solve the problem - maybe it is only a display error...?
Is there a application with wich i can test (or see - that is better) how the phone is connecten (GPRS, 3G, HSDPA...)?
kind regards
srkonus
Please, I really need your help. If I took the phone to the guarantee service, they just reinstall roms or something, and nothing changes. I tried to download one radio rom from there http://developer.htc.com/google-io-device.html#s4 but when I am trying to flash it, the error appears and says, flashing aborted. I am using Amon RA racovery if that means something. So, maybe now you can help me?
Try to change your network only to GSM instead of GSM/WCDMA.
I tried that... I tried every option, which is associated with connection.
I have the same problem...
Here the thread
http://forum.xda-developers.com/showthread.php?t=646971
Htc Tattoo is a very very bad phone...
Yea, I've seen this. After a week about, when I return from the trip, I will took my phone to service. They wrote me that, if it is held more than a month, phone should be replaced with the new one.
I brought Tattoo as a birthday gift for my gf,now it bacome the excuse of being late when we date......because she said she can not call me on time. and I never help her solved the problem.(both of us major is telecommunication in the university,what a joke.)
anyway I read the above and other topics.
and try to
1 turn to 'only gsm',
2 manully select oprator, there appears two local oprators, but no radio button on the UI, I'm not sure if it means selected. (do this at where signal is strong)
3 I try to turn on/off 'fly mode' at somewhere no signal.
4 flash other later roms.
no use at all.
on my table signal none. at the window signal full.
but it just 2m between.
my new wildfire and O2 mda is OK on the table, 80% signal.
I like HTC,I just don't sell it as 2ed hand,(half price now......)
I heard flash the Radio can make it better or solved, any one know the details?

[Q] HD2 Losing signal !!!

Hi everyone, i hope i'll find an answer cause i can't understand what's going on with my HD2 !
My hd2 keep losing signal, at first i taught it was a radio related thing, so i flashed a 2.12 radio (was on 2.15.40), but the problem is still there. So i decided to change the rom, cause the problem showed up after i installed a android sense rom (this one) i installed i miui stable rom, and still have it.
Here, i decided that the problem maybe came from my sim card so tried my wife's sim card (same operator) and another sim card (different operator) and it worked just fine, no losing signal at all.
So I've changed my sim card with a new one and the problem still occurs!!!!
Decided to flash a windows phone 7 rom, (just to be sure) and problem still there.
I can't understand what's wrong, i have this problem just with my sim card !!! any help please
loupio said:
Hi everyone, i hope i'll find an answer cause i can't understand what's going on with my HD2 !
My hd2 keep losing signal, at first i taught it was a radio related thing, so i flashed a 2.12 radio (was on 2.15.40), but the problem is still there. So i decided to change the rom, cause the problem showed up after i installed a android sense rom (this one) i installed i miui stable rom, and still have it.
Here, i decided that the problem maybe came from my sim card so tried my wife's sim card (same operator) and another sim card (different operator) and it worked just fine, no losing signal at all.
So I've changed my sim card with a new one and the problem still occurs!!!!
Decided to flash a windows phone 7 rom, (just to be sure) and problem still there.
I can't understand what's wrong, i have this problem just with my sim card !!! any help please
Click to expand...
Click to collapse
Well, the problem can occuor from many sources. Older series of HD2 has a slight problem with reading some of the SIM cards. Did you tried to download and re-flash the radio rom into your hd2 because i have had the same problem with my HD2 as i have had O2 sim card which worked fine and 3G sim did not work well in my phone. I re-flashed the radio rom and it did work and i got the stable and normal signal, also you need to check if you use Android if MAGLDR 1.13 is also installed as this keeps the communication with Android ROM if you use NAND android. So let's try to download and re-flash the latest radio from here: http://www.multiupload.co.uk/QP0IWGY42F and flash it into your HD2 to see first if the problem occours. You can read about flashing your radio here:
http://forum.xda-developers.com/showthread.php?t=611787
If you still stuck with your phone, do not hesitate to PM me and i will find a solution for you.
Hi Iceman,
Thnx for your answer,
i did flash the lastest radio, magdlr is installed of course. Now i'm still on windows phone 7 and still have this problem. As i explained before, i have this problem only with my sim card even if i changed it with a new one. Other sim cards work's fine. However i'll give it a try with the link you give me and see if it changes anything.
Thank you again, and i'll get back to you soon
@ loupio
Please reply if the solution of Iceman helps.
Thanks
Nothing hlped i did every imagining solution but still have the problem
it could be caused by a hw problem (bent pins), if you are not scared to open your phone you should try the solution on this tread:
http://forum.xda-developers.com/showthread.php?t=1190180
Please let us know if it worked.
PS: Don't forget to say thanks!
All ready done that but the problem still there :s
I've noticed that when I hold the phone and put my hand over the bottom 2/3rds of the phone (where the antenna is) my signal drops by 2-3 bars. If I am in a location with poor reception and I hold my hand over the antenna, I will lose my signal altogether. Next time you are in a location that you think you should have a signal, but it drops, just hold the phone with your fingertips. Hopefully that will fix it.
joshnchen said:
I've noticed that when I hold the phone and put my hand over the bottom 2/3rds of the phone (where the antenna is) my signal drops by 2-3 bars. If I am in a location with poor reception and I hold my hand over the antenna, I will lose my signal altogether. Next time you are in a location that you think you should have a signal, but it drops, just hold the phone with your fingertips. Hopefully that will fix it.
Click to expand...
Click to collapse
I have similar experience and it's so disturbing
I wants to change a new sim card from my operator to eliminate the cause from my old sim card(>5 yrs.), because on my moto k1, the signal seems a little better in same condit.
I have the same issue however it hopefully was solved by the bent pin issue, i just did it now, before i would hold my phone and loose 2-3 bars, now i hold my phone with both hands and cant seem to lose any signal bars.
The problem is not loosing 2 or 3 bars my problem is that it loose's the network and show's 'no service' on the status bar. The network won't comeback till i do a reboot or activate/desactivate airplan mode
Magldr or clk
Sent from my HTC HD2 using XDA
Magldr 1.13, and here is my logcat

[Q] Help with data and GSM losses of connection

I own a Verizon Motorola Razr M, bought in ebay to an US seller. I am in Spain and I use Movistar SIM card
The phone came with stock JB 4.1.2, and therefore I could not unlock the bootloader.
I started using it, but it had a problem that I am not been able to solve so far: after some hours of use, with no problems with GSM and data connections, it suddenly looses both connections, although the signals on the status bar still appear. I take care that signals have gone when I take the phone to make a call or surf the web.
I have tried the following procedures:
Change the net settings to GSM/UMTS
I rooted the phone with motochopper 1.1.2 exploit
I installed Safestrap 3.12 in order to be able to install other available locked compatible roms.
I tried these roms, following this thread here in XDA: Clean ROM 1.0. Clean ROM 1.1, Barebone New Base, Stock Deodexed.SDswap-Locked & UnLocked BLs-xt907-9.8.1Q-94-1, but no luck. This last one uses the last radio, but no way.
I also installed the [PATCH][GUIDE] Patch to fully enable GSM on Verizon CDMA Android phones. I could only install it on Clean ROM 1.1 however. It has been impossible to install it on the other ROMS. In any case, no luck again with the patch installed. Here I had a big problem because as I still had these problems, I got into *#*#4636#*#* in the dialer, and touched the band selection option: suddenly, the net showed no signal more and I was unable to make it work again: I finally solved this by installing the stock firmware from here with RSD lite.
No way. I still have this problem and I can not use the phone. I have also tried with another SIM card, but the problem remains. It is a shame because when the connection works, the phone runs very well.
Any help would be very appreciated
More details
errotaxar said:
I own a Verizon Motorola Razr M, bought in ebay to an US seller. I am in Spain and I use Movistar SIM card
The phone came with stock JB 4.1.2, and therefore I could not unlock the bootloader.
I started using it, but it had a problem that I am not been able to solve so far: after some hours of use, with no problems with GSM and data connections, it suddenly looses both connections, although the signals on the status bar still appear. I take care that signals have gone when I take the phone to make a call or surf the web.
I have tried the following procedures:
Change the net settings to GSM/UMTS
I rooted the phone with motochopper 1.1.2 exploit
I installed Safestrap 3.12 in order to be able to install other available locked compatible roms.
I tried these roms, following this thread here in XDA: Clean ROM 1.0. Clean ROM 1.1, Barebone New Base, Stock Deodexed.SDswap-Locked & UnLocked BLs-xt907-9.8.1Q-94-1, but no luck. This last one uses the last radio, but no way.
I also installed the [PATCH][GUIDE] Patch to fully enable GSM on Verizon CDMA Android phones. I could only install it on Clean ROM 1.1 however. It has been impossible to install it on the other ROMS. In any case, no luck again with the patch installed. Here I had a big problem because as I still had these problems, I got into *#*#4636#*#* in the dialer, and touched the band selection option: suddenly, the net showed no signal more and I was unable to make it work again: I finally solved this by installing the stock firmware from here with RSD lite.
No way. I still have this problem and I can not use the phone. I have also tried with another SIM card, but the problem remains. It is a shame because when the connection works, the phone runs very well.
Any help would be very appreciated
Click to expand...
Click to collapse
The problem also seems to become worse with the use of the phone: at the beginning, coming from a factory reset, It can last some hours before the problem occurs. But since it happens from the first time, it happens more and more frequently and the phone can not be used any more. It seems that there could be a software issue.
Another try disabling fast dormancy
I´ve just disabled fast dormancy, because my operator Movistar apparently does not use this technology.
For this, I have modified 3 lines from build.prop system file, as indicated in another site.
The 3 lines are:
ro.mot.ds.fastdormancy.disable=true
telephony.lteOnCdmaDevice=0
ro.telephony.default_network=3
Having fast dormancy enabled when your operator does not support it, seems to drain battery, and could cause other problems. That´s why I´ve done this. I have used root explorer apk from Google store, it is free and it automatically creates a backup of build.prop file when you modify it.
I keep the fingers crossed, let´s see what happens.
Fast dormancy: yes but...
After some days using the phone with fast dormancy disabled (for this, I also added this line to build.prop: ro.ril.fast.dormancy.rule=0 ; I read this for ICS Roms, I do not know if this command is also valid for JB, any comment will be welcome), I still get some cuts (less I would say), but at least the phone tries to restart the connections. For this, I have also installed the apk from Google Play called 3g reconnect.
In any case, any comment would be appreciated.
Issue not solved
I still get data and voice disconnections when I use GSM/UMTS or only UMTS modes. They occur ransomly, and they also occur as soon as I use a WIFI connection. I can only use the phone on GSM only mode, which is frustrating.
Any advise?
errotaxar said:
I still get data and voice disconnections when I use GSM/UMTS or only UMTS modes. They occur ransomly, and they also occur as soon as I use a WIFI connection. I can only use the phone on GSM only mode, which is frustrating.
Any advise?
Click to expand...
Click to collapse
I do not go near *#*#4636#*#* anymore. So tell me do you use that to make these changes (phone info is the app name).
Choosing GSM/UMTS or GSM only
aviwdoowks said:
I do not go near *#*#4636#*#* anymore. So tell me do you use that to make these changes (phone info is the app name).
Click to expand...
Click to collapse
Hello,
I have tried both: using *#*#4636#*#* or using the usual phone settings. Sometimes I have also checked that the changes made with the usual settings appeared also dialing *#*#4636#*#*.
Yesterday evening, I tried selecting global mode instead of GSM/UMTS and it seemed to work for some hours, but today morming, the problem occured again. So far, the unique way I have found to avoid connection cuts off is using GSM ONLY mode. I have to say that I have tried with 2 different SIM cards but the result is identical.
errotaxar said:
.
Click to expand...
Click to collapse
Did you select the 3 dot menu & mess with the "band" settings?
---------- Post added at 07:08 AM ---------- Previous post was at 06:56 AM ----------
http://forum.xda-developers.com/showthread.php?t=2346623
I did that once, and all the signals disappeared. I restored the phone with RSD Lite, that appeared to be the unique way to have again signals working. Now I do not even dare touching these 3 dots.
errotaxar said:
I did that once, and all the signals disappeared. I restored the phone with RSD Lite, that appeared to be the unique way to have again signals working. Now I do not even dare touching these 3 dots.
Click to expand...
Click to collapse
What booby a trap? How many step into!
I don´t know if I am understanding you. I did that once because I did not know what else should I do to solve the problem. I saw that there was the possibility to choose theoritically between US bands and Cellular, and I entered in that menu. It is not so stupid to try that if you have already tried 100 other ways.
In any case, anybody has an idea about how to solve this problem? I´m sure I am not the unique person having this issue with this phone.
errotaxar said:
I don´t know if I am understanding you. I did that once because I did not know what else should I do to solve the problem. I saw that there was the possibility to choose theoritically between US bands and Cellular, and I entered in that menu. It is not so stupid to try that if you have already tried 100 other ways.
In any case, anybody has an idea about how to solve this problem? I´m sure I am not the unique person having this issue with this phone.
Click to expand...
Click to collapse
You are saying the problem is now still there. Yet the radio partition is fixed. Please restate what has been fixed with the rsd flash & what remains unfixed.
Well I think I have fixed and solved the problem: I initially copied the APN settings I had with my previous HTC Sensation, because the phone operator was the same (MOVISTAR), the SIM card too, and I have not moved. In these APN settings, the proxy was "undefined" as well as the proxy gate. I wonder if the radio stucks looking for a proxy each time or whatever. I tried yesterday with completely different APN settings, with a concrete Proxy and a gate... and now I have not had any issue in the past 24 hours. I will still wait a couple of days to see if that was finally the reason.
Which in any case would be silly, because I just applied what was working OK with my sensation, but...
New APN settings: let´s see
Well I think I have fixed and solved the problem: I initially copied the APN settings I had with my previous HTC Sensation, because the phone operator was the same (MOVISTAR), the SIM card too, and I have not moved. In these APN settings, the proxy was "undefined" as well as the proxy gate. I wonder if the radio stucks looking for a proxy each time or whatever. I tried yesterday with completely different APN settings, with a concrete Proxy and a gate... and now I have not had any issue in the past 24 hours. I will still wait a couple of days to see if that was finally the reason.
Which in any case would be silly, because I just applied what was working OK with my sensation, but...
After several days, the problem is still there. After setting new values in APN, it happens less often, but it still happens. I have to switch to GSM only mode.
2 days ago, I was surfing the net at quite high speed with no interruptions, for half an hour. I then shutted off the screen, on again some seconds later, and the connection was blocked, I had to restart the phone. It has to be a software issue.
I finally sold the phone
After concluding that I could never get rid of this problem, I sold the phone, informing that he would have to use mainly GSM only connection. Great phone otherwise, but with this issue.
This sounds like a Baseband Issue.
Europe I have found baseband:
sm_bp_101031.027.32.81P to be the most stable so far, with no H+ support though.
But most Carriers in Europe don't have H+ or LTE.
That baseband is part of build 9.8.1Q-66
Which can be all downloaded here:
http://sbf.droid-developers.org/phone.php?device=8
The baseband from 98.16.1 had H+ support in Europe but connections dropped like crazy.
Same with 98.12.4, we remedied that with Aussie Radio at the time.
Maybe this may help some International users with Data and GSM Loss
Germanese said:
This sounds like a Baseband Issue.
Europe I have found baseband:
sm_bp_101031.027.32.81P to be the most stable so far, with no H+ support though.
But most Carriers in Europe don't have H+ or LTE.
That baseband is part of build 9.8.1Q-66
Which can be all downloaded here:
http://sbf.droid-developers.org/phone.php?device=8
The baseband from 98.16.1 had H+ support in Europe but connections dropped like crazy.
Same with 98.12.4, we remedied that with Aussie Radio at the time.
Maybe this may help some International users with Data and GSM Loss
Click to expand...
Click to collapse
I'm on 9.8.1Q-94-1(98.30.1.XT907.Verizon.en.US) and wanna use it in Germany. any experiences with the radio compared to the suggested one. Or is there another way to boost the performance of the razr m? Compared to my razr I the signal and data quality is really poor...
edit: my baseband-version is: SM_BP_101032.021.32.80P
edit2: ok... now i've flashed several basebands... and the behaviour of the phone is always the same... with the australian baseband of xt905 it wasn't possible to get an hspa-connection. dunno if its enough just to flash the radio-fw?!?!?
so is there an other way to get more stability in my region? i tried to flash the radio from razr hd retail germany. but i think the razr m don't like it when I fool around. actually I love the mobile, so i don't want to make it angry... your suggestions are very much appreciated...

[Q] Loosing data connection hard

Hi all, this is my first post or thread, i came here cause i heard from ppl this is best site for asking questions about cell phones, i started reading allot this forum and wow did i enter the other world i really like and wanna participate in.
Srry for little intro and lets get back to topic. So i got my first "normal" android and got trouble with it. I am using Samsung galaxy s5 g900F (european) factory unlocked and T-mobile as carrier with 4.4.2 kitkat. I have a big problem with a data connection that keeps going off every 30sec to 5 min if i use option to search and auttoconnect on LTE/WCDMA/GSM option. I read forum but no1 is mentioning this model as problematic 1 so now i post thread about.
Does any1 know what could be problem and how to solve it. Sometimes my data connection comes back and sometimes it doesnt and i have to switch type of network to get back again online. All other options that don't include LTE auttoconnect work just fine, i tried to get another SIM from carrier but same problem, i tried to get another Phone since i work in hardware firm and still same problem on another device, both were same models.
I still didn't put any ROMs but i really consider doing it maybe l8r on, it is stock version.
Pls be genttle since this is first time i post, maybe i did it on wrong place but i did read rules and everything and i think i did it on right place.
Ty in advance.
I did have a slightly similar problem years ago - when in roaming my phone could not connect to anything. What helped was a change of simcard for a new model - after that all was good.
Since you did try your SIM on a different phone (same 900F?) I would advise you to try: first on a completely different brand and phone model - if you can.
If this does not solve your problem do shake your service provider a bit - they could have supplied you with two faulty SIM cards in a row - that can happen. Otherwise - maybe there is a stupid limitation in your service plan which is causing this. There is no - to my knowledge - ready answer to the problem you have described.
Best of luck and if you do solve it come back and post - it will be very useful to lots of people for sure
Cheers!
Too many variables. You haven't observed enough of a pattern yet or tried enough things to narrow it down a bit. It could just as easily be carrier side issues as a bug in the firmware not negotiating a new connection if the LTE signal is lost.
A number of people were having data disconnect issues and that was addressed in the 4.4.3 /4.4.4 update. So that is one option to consider. And you could open a support ticket with your carrier. That is hit and miss as to results, but sometimes tickets actually resolve issues.
There are also a number of apps that may mitigate or possibly even solve your issue. Have a look at 4G LTE Switch and LTE Discovery.
.
Will try it today. Thanks for the help. Really appreciate it.
Sent from my SM-G900F using Tapatalk
rnrnrn said:
I did have a slightly similar problem years ago - when in roaming my phone could not connect to anything. What helped was a change of simcard for a new model - after that all was good.
Since you did try your SIM on a different phone (same 900F?) I would advise you to try: first on a completely different brand and phone model - if you can.
If this does not solve your problem do shake your service provider a bit - they could have supplied you with two faulty SIM cards in a row - that can happen. Otherwise - maybe there is a stupid limitation in your service plan which is causing this. There is no - to my knowledge - ready answer to the problem you have described.
Best of luck and if you do solve it come back and post - it will be very useful to lots of people for sure
Cheers!
Click to expand...
Click to collapse
yep i tried on same model 900F, hmm i will try it on another cell phone with LTE and will post what happened, thx allot for info

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