Only LTE signal. Lost coverage on GSM/UMTS. Very weird... - G3 Q&A, Help & Troubleshooting

Hi!
I've searching around but I have'nt found a similar problem like mine: Phone drops coverage when sending or receiveing a standard call. So, in LTE mode all works fine. But when the phone has to switch to 2G/3G for the "standard" call, it drops signal and of course it can't call.
So in fact I've a Smartphone that can do whatever except standard calls (In fact when my operator enables VoLTE maybe I can call with LTE signal only).
It is a D855 32/3Gb, it always had offical firmwares and updates from LG and suddently one day the problem appeared.
Things I've tried without success:
Firstly I thought it was a hardware problem with antennas, so I changed three of them: (Antenna Flex Assembly, Coaxial Cable and Buzzer case that has antenna integrated inside).
Then I started thinking about a software problem, and I downgraded it, rooted, flashed LineageOS (I'm in love with this SO!!) and even changed several radio/Modem (started with 21c, tested 21A, 20P, without success).
Finally, I tweaked build.prop ro.telephony.default_network values without success too :crying::crying:
Has anybody seen this problem or do you know more things to do or to test?
Thank you!!

Related

No signal, T-mobile, WCDMA

So i rooted my phone over a week ago, and tried out many different roms. Everything was going fine, until i noticed yesterday that i kept losing voice and data connection. I tried updating to the latest radio which was out today 5.09.00.20, but still have the issue.
The only workaround i've found so far is to set the network mode to GSM only. But obviously it's not very practical for a phone like the desire. When i have it on GSM/WCDMA Auto, it keeps voice and data on for about a minute, then i lose it. And when it's on, i still can't make any calls. But i can make and receive calls fine on GSM only.
Anybody have a clue what's going on here? I tried calling T-Mobile, but they were as useless as always. Apparently there was an issue on the 29th, which is now resolved, and they refreshed something on my profile. So i dunno if rooting/flashing my Desire has caused this or if it's some network outage.
I'm currently running the latest DeFrost rom. I've tried SenseFroyo (Opendesire), LeeDroid & i'm now running the official 2.2 sense rom.
I've also been having problems when connected via 3G for the past few days, but only when I'm at home (so I think it's a specific cell). The signal indicator shows a good signal but attempting to use the internet over 3G just times out, and my voice calls keep getting dropped.
Like you I can work around the problems by switching to GSM only.
I think it might not be a problem with my phone though, because I've tried putting my SIM card in my Nokia N95 and the internet doesn't work over 3G on that either (internet works using GSM on N95). I did manage to make a call on my N95 when my Desire was dropping both incoming and outgoing calls within seconds though.
Weird! I'm going to give it a few days and report it to T-Mobile if it's still happening.
It's fixed for me now. I guess it was a network outage

Can't turn Desire on from standby

Hey.
I have a big problem with my desire. The phone is fully working, but when it goes into standby, and I try to turn it on using the "power button" at the top, the keys light up, but nothing comes on the screen It just doesn't turn on again.
Any ideas? Thanks!
In the general section on the desire forum there is a topic related to defective proximity sensor. i,m a new forum-user so i can't make a link yet
Thanks for the help so far, but couldn't find anything that solved my problem :/ Have to restart the phone every time it goes into standby
Like many others, I am also experiencing this standby-of-death (SOD) problem: the lights in the buttons under the screen turn on, but the screen itself stays black. I have found out that it has to do with switching from 3G to 2G networks: the problem occurs after I have been at places where there is no 3G signal, but only 2G. For example, after a car trip or when going into the basement.
A workaround for this problem, is to type the code *#*#4636#*#* in the dialer. You will then end up in a hidden menu. By choosing "Phone information" (first item) and then scrolling down in the next screen, you can change the "Preferred network type". By default, it was set to "WCDMA preferred" on my phone. After I changed this setting to "WCDMA only" (so, 3G only), I have not seen the SOD issue anymore (for 4 weeks now, before it happened almost daily).
A disadvantage of this workaround is that the phone will never use 2G anymore. So, when you are at a place where there is no 3G signal, you will be disconnected (i.e. you cannot receive phone calls). As an alternative, I have now reverted the setting to the original value ("WCDMA preferred") and I have installed an older radio image (version 32.44.00.32U_5.09.05.30_2), which is considered to be more stable by many people. I'll test and see whether the problem reoccurs. If the problem stays away, it is apparently a software (radio image) issue. If not, it must be a hardware issue.
Anyway, if anyone has additional information about the root cause of this standby issue, please let me know!
Stamgastje said:
Like many others, I am also experiencing this standby-of-death (SOD) problem: the lights in the buttons under the screen turn on, but the screen itself stays black. I have found out that it has to do with switching from 3G to 2G networks: the problem occurs after I have been at places where there is no 3G signal, but only 2G. For example, after a car trip or when going into the basement.
A workaround for this problem, is to type the code *#*#4636#*#* in the dialer. You will then end up in a hidden menu. By choosing "Phone information" (first item) and then scrolling down in the next screen, you can change the "Preferred network type". By default, it was set to "WCDMA preferred" on my phone. After I changed this setting to "WCDMA only" (so, 3G only), I have not seen the SOD issue anymore (for 4 weeks now, before it happened almost daily).
A disadvantage of this workaround is that the phone will never use 2G anymore. So, when you are at a place where there is no 3G signal, you will be disconnected (i.e. you cannot receive phone calls). As an alternative, I have now reverted the setting to the original value ("WCDMA preferred") and I have installed an older radio image (version 32.44.00.32U_5.09.05.30_2), which is considered to be more stable by many people. I'll test and see whether the problem reoccurs. If the problem stays away, it is apparently a software (radio image) issue. If not, it must be a hardware issue.
Anyway, if anyone has additional information about the root cause of this standby issue, please let me know!
Click to expand...
Click to collapse
OMG I love you!
Seriously this has been doing my head in for weeks! I have posted a couple of times in this forum. First time, constantly remvoing and replacing the battery left me with a bricked phone. HTC revived it under warranty but after a week I got sick of Sense (and the poor battery life) and tried rooting again (tried Redux and CM7) but the problem came back. Makes sense because it works fine around Bristol (loads of 3G) but constantly SODs in Bournemouth (flicks between 2G and 3G at my desk). Also, just had data off for a few hours and didn't get SOD once.
I am not up on the lingo yet as I am fairly new to rooting but running Baseband version 32.49.00.32H_5.11.05.27. Is this the radio?
Please keep me posted on the older radio version. Shouldn't need a long test period, just need to go from a known 3G area to a known 2G area while locked.
Baseband version 32.49.00.32H_5.11.05.27. Is this the radio?
Click to expand...
Click to collapse
Yes it is the radio.
I have got GingerVillain (Based on CM) and I use the Power Control widget to switch between 2G and 3G. You can customise the widget (just add it to a screen) to get this feature.
I haven't got any 3G around my house so I don't need to activate it all the time .
Yeah Redux has a similar thing so I will use that until a proper solution is found.
Small update: enabling 2G only didn't fix the issue (I think 3G only is okay) so perhaps the issue is with 2G rather than switching between the two.
Instead I am using an app called "3G Data Only!" so that 2G can still be used for calls but not data, working great so far.
I have tied the latest Radio (32.56.00.32U_5.17.05.23) and the problem does not go away.
How come this problem doesn't occur to (many) others? Could it be related to your network provider? Maybe you could change the SIM with another, from another network, and see what happens. Also, you could make use of the phone warranty - if it's still covered by it.
Icysoul said:
How come this problem doesn't occur to (many) others? Could it be related to your network provider? Maybe you could change the SIM with another, from another network, and see what happens. Also, you could make use of the phone warranty - if it's still covered by it.
Click to expand...
Click to collapse
On o2 (in UK) right now, will try out another sim later. As for warranty, never had any issues on non-root Froyo Sense so can't do anything.
Icysoul said:
How come this problem doesn't occur to (many) others? Could it be related to your network provider? Maybe you could change the SIM with another, from another network, and see what happens. Also, you could make use of the phone warranty - if it's still covered by it.
Click to expand...
Click to collapse
I have tried 2 different sim cards, same provider, but the problem persists.
hurin8 said:
I have tried 2 different sim cards, same provider, but the problem persists.
Click to expand...
Click to collapse
Try to change the network, say, from O2 to 3 or Vodafone. If your Desire is branded, there is a free way to unlock it - just look for Desire SIM-Unlock utility in the forum, by sieempi
Been running radio 32.44.00.32U_5.09.05.30_2 for a couple of days now and the issue seems to have gone away.
Stamgastje said:
A disadvantage of this workaround is that the phone will never use 2G anymore. So, when you are at a place where there is no 3G signal, you will be disconnected (i.e. you cannot receive phone calls). As an alternative, I have now reverted the setting to the original value ("WCDMA preferred") and I have installed an older radio image (version 32.44.00.32U_5.09.05.30_2), which is considered to be more stable by many people. I'll test and see whether the problem reoccurs. If the problem stays away, it is apparently a software (radio image) issue. If not, it must be a hardware issue.
Click to expand...
Click to collapse
I also have this SOD issue with the older radio ROM versions, so installing an older version is not a solution.
d10brp said:
I have tied the latest Radio (32.56.00.32U_5.17.05.23) and the problem does not go away.
Click to expand...
Click to collapse
I can confirm that. I have tried most of the radios listed here and here, they all have the SOD issue.
d10brp said:
Been running radio 32.44.00.32U_5.09.05.30_2 for a couple of days now and the issue seems to have gone away.
Click to expand...
Click to collapse
Guess that's just pure luck...
d10brp said:
Instead I am using an app called "3G Data Only!" so that 2G can still be used for calls but not data, working great so far.
Click to expand...
Click to collapse
Great, I'll try this application! Would be very nice if that fixes the problem without disabling 2G phone calls. I never use 2G for data (too slow anyway), but I would like to be able to still make phone calls when out of range of 3G cells.
Icysoul said:
How come this problem doesn't occur to (many) others? Could it be related to your network provider? Maybe you could change the SIM with another, from another network, and see what happens. Also, you could make use of the phone warranty - if it's still covered by it.
Click to expand...
Click to collapse
It might be, I don't know. I'm using a Telfort SIM, connected via the KPN network (Netherlands).
3G data only works a treat for that, you can make calls.
Found with the old radio that it is a lot more stable than the new radio but not 100% perfect. Where I work I only have 2G and it would SOD all the time but now it doesn't. However on a journey I make with intermittent 2G/3G I did get a SOD.
Sent from my HTC Desire using XDA App
3G Data Only doesn't work well enough. The SOD issue does occur less frequently, but the phone still hangs sporadically. So, if have disabled 2G completely again.
You should try Insertcoin. I haven't had this issue since I started using IC v32 a2sd.
Hi there. So i get the same thing on mine. I thought I should report my experience.
Had it over a year old then all of a sudden it started acting like this
heres what i tried
Factory reset, rooted it twice, boot with no sim, no SD card, dismantled it via instructions I found on an android forum to check for loose connections, gave it to a friend who ran some different roms, overclocked it, underclocked it. Its currently on the Oxygen rom, no difference. I tried the secret menu from page one of the comments. I tried living with leaving the screen on for 30 mins..but its so impractical
I should add that if i leave it for say a couple of hours, the damn thing comes on just fine. Its only from being on, to off, then back on..
I think its hardware related, maybe something to do with the power being held back for the screen or something. All i can say is that its really doing my tits in and i'm currently using my old phone which is functional but not as fun.
What can i do next...send to HTC, i'm out of warranty but their repair centre can still have a look, or buy a faulty phone off ebay and harvest some parts...
I dont want to give up on it, because apart from this the phone works fine.
guys i had this problem too, when i force to use 3G only everything works perfect but in area with no 3G signal your phone become useless cuz you are out of network, i also had a self-rebboting problem and i sent my lovely desire to htc repair center, they replace mobo and now i am waiting to receive my phone back and i will test this issue, if everything will works correctly in 3g/gsm etc you guys need to do the same and sent your phone to repair,

HELP! Major network problem :(

Hi all,
I got my Desire from the British carrier "Three" last April when it came out. It was stocked with Android 2.1 but the phone was unbranded and not locked so making life much easier.
I rooted the phone weeks later and flashed a number of various roms and radios (usually newest ones recommended by rom developers) and just played around with them. No problems ever occured and everything went smooth.
However a while ago (about 4 weeks I would say) strange thing happened: when the carrier 3 does not gave 3G coverage it usually switches to other network's 2G roaming service. It is also possible to switch to 2G permanently by forcing it via phone settings. It stopped working in Central London for me while still worked elsewhere (very strange) so I had to rely only on 3G service. I thought it was a network issue at first but now I'm not sure.
Later (or at least so I noticed) the connectivity started fooling around: even when standstill (i.e. NOT in a train, bus etc.) and staying at home the network connectivity just disappears all of a sudden. Sometimes it comes back by itself and sometimes I just do it manually via netowking settings. This is much more common when on the move (i.e. on the train etc. even though it never used to happen before). Moreover, sometimes while manually searching for network it says "your sim would not allow to connect to this network" even though I try to connect to the correct one. Instead I switch "WCDMA only" and "WCDMA/GSM auto" options and connection comes back by itself. Then it disappears again after a while. Even more strangely, connection does not disappear if I am talking on the phone with someone but in other situations (such as browsing internet) it just disappears and I see no bars in network reception indicator and cannot connect to internet or make phone calls.
I know 3 has a reputation (deserved or not) of having "bad" network but I don't think this has anything to do with that. My Desire used to work fine before and never had such problems (except in specific spots which have bad coverage). Moreover, I have another old phone and it works fine without any problems with networking while the Desire messes around. I am sure it has either to do with firmware or, worse, hardware.
I have tried a number of roms, radios and settings and it's the same thing all over.
If nothing works is there a way I can still bring it to warranty service after flashing "unrooted" stock rom if there is one available? I'm so frustrated because I have no idea why this is happening.
Its because three have switched off 2g roaming I have the same problem. Search Google
Sent from my HTC Desire using XDA App

[Q] Sporadic GSM signal loss on Froyo [RESOLVED - SIM HW defect]

My phone loses signal often without any obvious reason - i.e. I've placed it on a table where the coverage is 100% and just leave it like this, but suddenly there's no signal at all. Usually in a while the connectivity is restored, but sometimes it just gets stuck without signal (installed "No signal alert" to monitor it).
I'm in Bulgaria, so there should be no problems with the UK release. I tried with 3.4.3-11 and 3.4.2-155, loosing signal on both. I just downgraded to 3.4.2-145 and the signal is stable for now...
For the record, I tested it with "clean" install - wiped, then flashed the SBF - no root, no clockwork recovery, no custom ROM, no apps...and the phone keeps loosing signal pretty often.
Anyone else noticed such behavior?
Hmm, I'm loosing signal with 3.4.2-145 as well...I'll try with different operator to see if there's difference. The other option is to downgrade to Eclair - which I guess is not an option anymore after flashing Froyo...
I'm currently using the 3.42.155 and haven't really experienced signal losses. Could it be that you must get your hardware checked? I hope you solve it soon! Goodluck!
3g and Voice calls are related, when you receive a voice call 3g is dropped, and when you hang up the phone its resumed, but if you have the wrong baseband it could happen the opposite, signal reception drops when 3g is transmiting/receiving.
This may be your case,
To the point Bad 3g speed / bad signal / drops in signal / drops in 3g, all is repaired just changing the baseband.
try this
http://forum.xda-developers.com/showthread.php?t=944258
Sorry I left the thread without update - it turned out the SIM got defective, it just coincided with the Froyo upgrade and mislead this is the cause. After I downgraded to 2.1 it kept loosing coverage, than I moved the SIM to an old Sony Ericsson and I got "SIM Inactive" error...I don't get it why Android/Motorola can't distinguish such hardware defects...
not sure if it's your SIM, but when i was on 3.4.2-145, i also have this same problem. Had a friend with a Nokia but same operator, had 100% coverage and my phone with EMERGENCY CALL only. But it comes back in a while or so. Not sure if it's the ROM or not, but now with LiquidArc (with 3.4.3-11), signal seems to be very good, or at least on par with the dumb-phones

[Q] Network Connection Issues

I have a Desire, running with Cool's Images (Sensation v3...7, Cool3D AceS). Since some weeks the network connection through GSM and also 3G is very unreliable. Phone calls break up, the signal symbols shows a good signal but I can't make calls nor am I reachable, often enough the phone doesn't find any network, etc.. Sometimes it just works without any issue.
It all started when I was travelling to the US. But the issue remained when I was back in Germany. I even replaced the SIM card. Other phones with the same SIM card work without any problems. I tried Software Updates (see above). And I'm using the latest radio (32.56.00.32U 5.17.05.23).
Anybody out there with any idea? Thx a lot!!!

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