Random loss of signal requiring airplane mode cycle - Sprint LG G3

So I've had the G3 for a couple weeks. I am completely stock ZV4, rooted with TWRP. After flashing TWRP, I've noticed it will randomly lose signal, with a red x in the signal bars (no voice or data connection), and the only way to get connectivity back is to cycle airplane mode (or reboot obviously). I don't know if TWRP or something it did is the culprit, but it was only after I flashed TWRP that I noticed this. I ran stock rooted for the first week and a half of owning the phone and never had this problem. Now I seem to have it 2 or 3 times a day. Has anyone else experienced this?? Half the time I have no idea that the phone has been a useless brick in my pocket for 30 minutes while people have been trying to text me, etc. I suppose I will flash the latest update and see if that cures it. Just wondering if i'm alone with this one?

I've been having that issue but only when in on CM Roms. I have noticed my stock slowly goes from LTE to 1x, reboot will reset it.

Make sure the network is anything BUT Global. In settings>more>mobile network

engine95 said:
Make sure the network is anything BUT Global. In settings>more>mobile network
Click to expand...
Click to collapse
That may have been the ticket. It was set to global. Changed it to LTE/CDMA. I will give that a try for a few days and see what happens. Thanks!

ydoucare said:
That may have been the ticket. It was set to global. Changed it to LTE/CDMA. I will give that a try for a few days and see what happens. Thanks!
Click to expand...
Click to collapse
Still happens, even after changing to LTE/CDMA and flashing ZV6. I've noticed it the last few mornings when I get to work. Seems to only happen when I travel and it has to hand-off to another tower. Cycling airplane mode fixes it every time. I guess i'll have to try reverting back to 100% stock and see if that fixes it. If not, maybe it's a local issue with a tower, seems unlikely though.

ydoucare said:
Still happens, even after changing to LTE/CDMA and flashing ZV6. I've noticed it the last few mornings when I get to work. Seems to only happen when I travel and it has to hand-off to another tower. Cycling airplane mode fixes it every time. I guess i'll have to try reverting back to 100% stock and see if that fixes it. If not, maybe it's a local issue with a tower, seems unlikely though.
Click to expand...
Click to collapse
You can switch it to CDMA only. That's what I have to use most times.
Or flash the zv4 modem/radio in the Stock ZV6 ROM thread. I think that's where I put it.

engine95 said:
You can switch it to CDMA only. That's what I have to use most times.
Or flash the zv4 modem/radio in the Stock ZV6 ROM thread. I think that's where I put it.
Click to expand...
Click to collapse
If I had to do the former (CDMA only), it would be a deal breaker and i'd get another phone. I'm not sure the ZV4 modem would help as I just came from ZV4 and had the problem then as well? Either case, I'm going to go back to 100% stock unrooted and leave it that way for a while and see if the problem continues and report back here. Thanks for your help!

Related

**SOLVED!!** Any 3.27 Radio-based ROM & signal reception issues

hey everyone, maybe I have a bogus phone, but I've tried multiple roms based on the 3.27 antenna, DCD's WM6 & WM6.1 versions.
Each time, after the flash (both radio and rom) it takes me over 5 minutes to get a signal (RT or EVDO). After it gets a cell signal, everything works fine including GPS. But after each soft reset, it takes me 5 minutes to get a phone signal again.
I thought it was the ROM, but after trying it with multiple versions, I am at a loss.
Any ideas?
FWIW MSL/MDN/MSID codes are intact and correct. Signal area is consistently 4 bars. Phone functions fine after getting a signal.
**SOLUTION**
1. Have MSL code ready
2. From phone app, type ##PST#
3. Click EDIT
4. Type in MSL code
5. Click VIEW INFO in bottom left corner
6. Click M.IP SETTINGS
7. Change value of MIP REGISTRATION RETRY to 1000 ms
8. Change value of MIP MODE to MOBILE IP PREFERRED****
9. Click MENU in bottom right corner
10. Click OK
11. Soft reset device
**** note, I had to adjust MIP MODE 3 times before I got it to work.
Thanks everyone!!
especially limezednem!!
no issues so far. My phone boots up super quick now since i did this wm 6.1 and radio update. Feels kind of naked but love the speed. It has frozen on me on multiple occassions when trying to uninstall certain programs but as far as phone connectivity, i have had no issues since i got it working. Connects right away.
I had the same issue. I flashed back to the original ROM and it signal was acquired in a flash. I have since swapped the phone from Verizon, but I am reluctant to re-flash, though I REALLY want the GPS functionality... please some one come up with a cure for this slow signal malady!
anyon else had this issue?
pdavis466 said:
anyon else had this issue?
Click to expand...
Click to collapse
I originally had problems with the dreaded Error 67 with the new ROMs (tried everything). I went back to the stock Sprint ROM and it disappeared.
On a whim I tried the upgraded ROM again (glutton for punishment). After it rebooted I couldn't get a phone signal... I went into Connections and turned off the phone and waited a minute and then turned it on again. Got a signal in less than 10 seconds. (Error 67 are gone too... go figure!)
Try that.
I'm w/Sprint and had the same issue with radio ROM 3.27,it took about 2 minutes to get cell signal after soft reset,then the data connection got disconnected every single,i was so frustrated since i did a lot of internet radio streaming and IMing.I flashed it back to 2.17,all is working fine with the old ROM,I think i can live w/o build in GPS for now.
You might have already tried this, but if not, try flashing to DCD's 2.1.0 ROM with the 3.27 Radio. This is the one and only ROM I've ever flashed to and probably ever will flash to unless some godlike official update is released. I stuck with this because I feel it's *easily* the most stable, has fully working BT AND has GPS & Rev A enabled (network permitting).
If you haven't already, try 2.1.0.
sandiegodude said:
hey everyone, maybe I have a bogus phone, but I've tried multiple roms based on the 3.27 antenna, DCD's WM6 & WM6.1 versions.
Each time, after the flash (both radio and rom) it takes me over 5 minutes to get a signal (RT or EVDO). After it gets a cell signal, everything works fine including GPS. But after each soft reset, it takes me 5 minutes to get a phone signal again.
I thought it was the ROM, but after trying it with multiple versions, I am at a loss.
Any ideas?
FWIW MSL/MDN/MSID codes are intact and correct. Signal area is consistently 4 bars. Phone functions fine after getting a signal.
Click to expand...
Click to collapse
Try programming your phone OTA, and updating your PRL.
*22803 for telus, *228 for some other carriers. Not sure what you have, but that could be your issue.
Mine did this at first, I dont know what I did to change it but it went away. Problem is, when I updated my prl to 60711 or whatever the new one is, the problem came back. I reset on my way to work and it didnt get a signal until well after I parked (15 min drive) but for some reason sitting at home it would get the signal within 2 minutes. For me it hasn't been that big of an issue since I only soft reset once a week or so. But I am scared that this will occur in a time of need. Glad to hear there are others out there who share my problem.
SAME THING HAPPENED TO ME.. i made a thread about this too....
did you get it resolved?... its really frustrating.. i flashed it flawlessly to my room mates phone... then failed on mine.. figured it was my phones fault.. got a new one... and SAME thing on the brand new phone... where am i going wrong?
all ID numbers were correct... esn, mdn, msid. etc etc.
help me please
same EXACT Thing happened to me.. with 2 phones.. however, I flashed my room mates phone flawlessly and is still working without an issue...
double post... damn computer
no luck.
sticking with 2.17 for now.
i have SORT OF the same prob............ i get signal right away but it fades in and out from evo to 1x and back ...... sometimes it can take me a half hour to finally connect a phone call because of it.
any ideas?
bump because i really would like to know why this is happening to a few select people..
maybe ill just wait for sprint to release the official rom/radio... and go from there
I went back to 1.4 radio and custels 1.1 rom, now my internet isnt working....
go figure
i have a feling it might have to do with prl's.
try ##786# reset it and then load latest prl i hope this work
I have the latest PRL, still no luck.
I have Verizon and just dial *228 and when prompted press #2 and it updates my roaming capabilities (PRL) all over the air with out having to look for PRL's over the net and manually updating them.
I don't know if Sprint has this feature but if it does try it out.
Ohh yeah i was playing with the registry and found a way to make your signal stronger ( I think ) I don't know if it realy does work but it give me higher bars
go to
HKLM -- System -- State -- Phone
There are two strings.
One is Signal Strength and Signal Strength Raw.
I change the value to 100 on both and get full bars. I dont know if it does give a real effect.
But after a little while it goes back to the original signal value
Shiva1 said:
I have the latest PRL, still no luck.
Click to expand...
Click to collapse
diid You do ##786# and reset phone ?
I have the sprint 7800 with 6.1 mobile and I am having an issue with my reception as well with this radio. When I make / receive phone calls I get a crackling sound. It's faint but none the less enough to be annoying whne talking on the phone for awhile. Any one else having this problem or have a solution to it? Thanks ahead of time.

Major modem issues

Since I got the phone and tried just about every rom, kernel and modem, i have nothing but signal drop all the time. My modem flips between 3g and 1x, I.cannot go back to eclair, but I need the phone to have a steady data connection for work. Currently I odin'd EB01 with nothing else and I am still having the problem...
Someone help please!
Sent from my SCH-I500 using XDA Premium App
mikejaret said:
Since I got the phone and tried just about every rom, kernel and modem, i have nothing but signal drop all the time. My modem flips between 3g and 1x, I.cannot go back to eclair, but I need the phone to have a steady data connection for work. Currently I odin'd EB01 with nothing else and I am still having the problem...
Someone help please!
Sent from my SCH-I500 using XDA Premium App
Click to expand...
Click to collapse
Sometimes you have to flash that modem twice for good measures and after booting follow up with *22899 to update roaming. Which ROM, kernel, and modem you on anyways?
I am STILL having modem issues, I used the packaged 2.1 that was liek 400 megs and had modem kernel and stock eclair all packaged up, and i have done the official ota upgrades to the newer eclair AND now to froyo and STILL having the modem issues...
someone PLEASE help.....
Have you tried flashing JUST the modem? Try the EC01 modem in the Development forum: http://forum.xda-developers.com/showthread.php?t=1029436
ONLY flash the radio in Odin. Like vi3tboiii54 said, sometimes ya have to do it a second time if you don't see a change upon bootup. Godspeed.
have you updated your prl?
I have now just tried to flash the modem multiple times and I am still getting the same problem...i dont understand how this is possible, and as I have no warranty (bought it on clist) i am screwed.....
*228 is your friend...
I've had that problem since the first froyo modem (couldn't really ***** to vzw then and just used the DL09 modem) and I've *228'd my brains out. Got fed up took it in to the store bone ota stock with speed test installed. While rep was playing with the device it locked to 1x in a store with network extenders, lol. Got a new device on the way no questions (I know that's no help to you op). I just knew once the ota hit that this issue would be more prevalent on many devices. And that's indicated with all the new my signal sucks threads in the last week.
good day.
Looks like it might be a VZW issue. VZW iPad 2 3G's are having problems with 3G dropping.
Can't post link yet, but just Google "Verizon Wireless 3g issues" under News.
The workaround is "re-enabling the 3G radio then rebooting the entire iPad".
iPhone's caused issues on the AT&T network and now the iPhone and iPad are probably causing network issues on VZW.
- Tim
If you are having 3G signal loss issues, please post your build date and modem version here:
http://forum.xda-developers.com/showthread.php?t=1051543
Build date can be found by pulling battery and looking at number next to 500V (E.g. 10.08)
chopper the dog said:
I've had that problem since the first froyo modem (couldn't really ***** to vzw then and just used the DL09 modem) and I've *228'd my brains out. Got fed up took it in to the store bone ota stock with speed test installed. While rep was playing with the device it locked to 1x in a store with network extenders, lol. Got a new device on the way no questions (I know that's no help to you op). I just knew once the ota hit that this issue would be more prevalent on many devices. And that's indicated with all the new my signal sucks threads in the last week.
good day.
Click to expand...
Click to collapse
You've got a new device on the way??? Awesome. Finally. Hopefully that will be a .......wait for it........
good day.
I installed ComRom when it was released, did not go to ED01 modem. Was not having any 3g issues until this morning. Yesterday I was pulling 1.9mb download and 1mb upload. This morning, 3g keeps going out on me, and its pulling .1mb dl and .3mb upload. Seems real wierd, I never changed the modem at all. I hope itsa verizon problem.
http://community.vzw.com/t5/4G-Discussion/ATTN-Verizon-Reps-ref-LTE-outage-ETA-for-repair-and-other/m-p/513354
Verizon is having issues. Not the ROM or Modem.
Just did a side-by-side test using my ChromeOS notebook on my Verizon connection. Phone on desk, notebook on lap, less than 20" between them.
Notebook gets 1.38Mbps down, .37Mbps up with a 219ms ping.
Phone gets 55kbps down, 10kbps up with a 948ms ping.
At least in this area, it's definitely not the network.
My fascinate gets stuck in 1x all the time also. My wife's doesn't. So I called Czech and my new one is supposed to be here today.....
I have the problem pop up on the occasion. Whenever i get stuck on 1x or no data, I just put the phone into airplane mode for 10 seconds and 3g returns after exiting airplane mode.

3g lose connection while downloading.

Ever since Verizon network went down a few days ago I can't get a solid connection whenever I download anything. Browser seems to load fine. I try downloading several apps from the market but cannot complete the download due to lost connectioime. It will just stop at any time during The download. Same with files. I dont think is the rom. I'm on cm7 pre-release. Flash back to Tesla but still have the issue. Is anyone else have this issue?
Are you close to a 4G area? Try locking your radio to 3G and see if it improves.
akanatrix said:
Are you close to a 4G area? Try locking your radio to 3G and see if it improves.
Click to expand...
Click to collapse
No I don't get 4g in my area. How do I lock 3g? I have it set on cdma / edvo auto.
xxxdroidxxx said:
No I don't get 4g in my area. How do I lock 3g? I have it set on cdma / edvo auto.
Click to expand...
Click to collapse
You go into the phone dialer and input *#*#4636#*#*, choose phone information. LTE mode for only 4G, CDMA auto (PRL) for only 3G. You can change it back to normal by using CDMA + LTE/EvDo auto.
I've been having the same exact problem.
akanatrix said:
You go into the phone dialer and input *#*#4636#*#*, choose phone information. LTE mode for only 4G, CDMA auto (PRL) for only 3G. You can change it back to normal by using CDMA + LTE/EvDo auto.
Click to expand...
Click to collapse
I'll try this later tonight.
slckofit said:
I've been having the same exact problem.
I'll try this later tonight.
Click to expand...
Click to collapse
Just installed the latest radio and is still having the same issue. I hope is the network then since you're having the same problem too.
I have das bamf remix 1.5 on my phone and I've been having very slow downloads lately when it says I have a full signal.... Tried both modes as mentioned above and problem persists. Can't even load a whole you tube vid. WTF
New radio problems
I had similair issues, and I went back to stock 605.6 radio and a simple debloat rom and it fixed my issues, I am also set to CDMA(PRL) as I'm in a 3G only area
on the new radio my 3G connection was unstable and my GPS wouldn't lock
all of this only occurred after the verizon network went down and came back up.
before that I was having my problem with the new radio. I'm waiting on 605.6 until Verizon officially updates the radio, because I think they changed something that is currently only working with the old radio, the only one they have to support at this time, just my conjecture of course, but I've tried it a few times going between an old radio/old rom and new radio/new rom and it's consistant
Having the same issues. Tried all the radios, but downloading from the market place still goes at a snails place. Like everyone else this started after the lte network went down and came back up.
Update:
Found this on Android Central: Created Cheeta186
cheeta186 said:
Alright, I just got off the phone with them and they fixed my problem in less then 5 minutes. The problem was caused when the network went down, and when it came back up, some of the thunderbolts would not connect correctly causing the connection issues. When I called customer service the woman brought a tech guy on the phone and he had me take the battery out of the phone WHILE IT WAS POWERED UP and then take the SIM card out and he did some kind of "network reset" to my SIM card and now all the issues are gone. Worth giving them a call and seeing if this fixes your problem. IMO VZW has the best customer service hands down, they are always so helpful and will make conversation with you during the luls while on the phone (IE when your phone is booting up).
Click to expand...
Click to collapse
Can't check this myself yet, because verizon customer service isn't open as of now.
Interesting. I'll give Verizon a call. Thanks.

Signal drop issue on my optimus

I've been hiving this strange issue for a couple of months now.
Hi,
I own an Optimus one Currently running on Froyo Final + franco v19 set at 729/480, smartass. (None of this matters now) Anyway...
Whenever I'm home, the signal is in full strength. However, when I travel, or am at a different destination, there is a constant signal loss.
Signal bar will be at 100% and then suddenly it'll drop to emergency mode and then start hunting for signal. This happens very frequently and drains my battery.
At first I thought this was a rom issue and so I reinstalled everything from scratch (no titanium restores) only to find out that the problem cropped up again.
I switched back to my stock froyo rom which I'd backed up some 4 months ago and the problem didn't seem to go away!
So the only 2 suspects now left are the phone itself, and the sim card.
What am I supposed to do now? Has anyone else experienced such a problem?
blueren said:
I've been hiving this strange issue for a couple of months now.
Hi,
I own an Optimus one Currently running on Froyo Final + franco v19 set at 729/480, smartass. (None of this matters now) Anyway...
Whenever I'm home, the signal is in full strength. However, when I travel, or am at a different destination, there is a constant signal loss.
Signal bar will be at 100% and then suddenly it'll drop to emergency mode and then start hunting for signal. This happens very frequently and drains my battery.
At first I thought this was a rom issue and so I reinstalled everything from scratch (no titanium restores) only to find out that the problem cropped up again.
I switched back to my stock froyo rom which I'd backed up some 4 months ago and the problem didn't seem to go away!
So the only 2 suspects now left are the phone itself, and the sim card.
What am I supposed to do now? Has anyone else experienced such a problem?
Click to expand...
Click to collapse
I tink is ur service provider satellite...
Sent from LGE Secret phone using tapatalk app...
blueren said:
Whenever I'm home, the signal is in full strength. However, when I travel, or am at a different destination, there is a constant signal loss.
Signal bar will be at 100% and then suddenly it'll drop to emergency mode and then start hunting for signal. This happens very frequently and drains my battery.
At first I thought this was a rom issue and so I reinstalled everything from scratch (no titanium restores) only to find out that the problem cropped up again.
I switched back to my stock froyo rom which I'd backed up some 4 months ago and the problem didn't seem to go away!
Click to expand...
Click to collapse
Sounds like the phone fails to switch between BTSes properly depending on signal strength, not to mention the failed signal display. RMA it. (Either way, we would not fix your faulty SIM either). Talk to the guys who sold you the phone.
dax4182 said:
I tink is ur service provider satellite...
Click to expand...
Click to collapse
Sir, this is a GSM phone, not a satellite one.
dr.notor said:
Sounds like the phone fails to switch between BTSes properly depending on signal strength, not to mention the failed signal display. RMA it. (Either way, we would not fix your faulty SIM either). Talk to the guys who sold you the phone.
Click to expand...
Click to collapse
I suspected that too. But the thing is, it was all ok a couple of months before. So its really hard to tell whether its the sim fault or the phone fault. I think I'll talk to the vodafone people first and see if they're able to assist. If not, then rma it is
I would like to know if it was resolved. My wife has the LG P500 model and it drops signal when not at home. LG some how is ignoring our complaints, I've gone for a new sim, but no luck. I'm on the official stock 2.3.3
Edit:
Updated from v20b to v20c, hoping it fixes the issue.
Read this, might solve ur problem too:
http://forum.xda-developers.com/showthread.php?t=1414506
For me it was because I'd set the network mode to GSM/wcdma auto. The moment I set it to Gsm only or wcdma only, the problem disappeared
blueren said:
For me it was because I'd set the network mode to GSM/wcdma auto. The moment I set it to Gsm only or wcdma only, the problem disappeared
Click to expand...
Click to collapse
Alternatively you can go to dialer and press on *#*#4636#*#* and go to phone infomation and scroll down and click on gsm auto prl. Default i think is wcdma preferred which is 3G only while GSM Auto uses 2G when 3G is unavailable
myawan said:
Read this, might solve ur problem too:
http://forum.xda-developers.com/showthread.php?t=1414506
Click to expand...
Click to collapse
Tried this, still facing the same issue.
blueren said:
For me it was because I'd set the network mode to GSM/wcdma auto. The moment I set it to Gsm only or wcdma only, the problem disappeared
Click to expand...
Click to collapse
simplyred123 said:
Alternatively you can go to dialer and press on *#*#4636#*#* and go to phone infomation and scroll down and click on gsm auto prl. Default i think is wcdma preferred which is 3G only while GSM Auto uses 2G when 3G is unavailable
Click to expand...
Click to collapse
I already have GSM only, tried GSP auto prl which changes the signal icon into roaming mode, so switched back to GSM only.

Strong 4G but weak LTE signal

Does anyone else experience this or know how to fix it?
I get weak LTE most of the time (2 bars)but when i do HSPA only for 4G, it gives me full bars. I also get network/modem freezing where i have to restart the data connection to get signal back.
Running stock gb and stock kernal, rooted with dag kernal and running cwm base recovery.
Sent from my SGH-I717D using XDA
Yeah, I see the same thing. Manually turning data on/off seems to work for me.
-Edit-
What I mean, is that manually turning data on/off seems to reset to LTE. It's not an acceptable fix, I know, but it gets the job done for now.
yeah same here i'm on rogers and when i enable LTE i get 2 bars and as soon as i put gsm/hspa auto mode boom 5 bars. i called rogers and they told me to factory reset my phone, i did helped but a couple of weeks later same problem. i don't want to have to factory rest my phone every couple of weeks... they also told me if the problem persists to send it to repair. it's a brand new phone! and it seems like i'm not the only one witht his problem so. anyway the ics update should come out this month and hopefully it will get rid of this problem.

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