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Signal drops since 4.2.2

Hi everyone.
I owned a Nexus 5 one month ago, but unfortunately, it does not work as expected. On 4.4.0, I had multiple issues concerning network already (unable to switch to 3G networks only, very variable HSPA signal reception (from 4/4 bars to Edge exactly at the same place), ...). This issues were supposed to be fixed with 4.4.2 and most of them are, excepting HSPA signal which is still very weird. However 4.2.2 brings my phone another issue that I didn't noticed on 4.4.0 which is a very annoying and repetitive complete signal blackout (no reception at all (Edge/HSPA), even for emergency calls I guess). Signal drop can happen twice in an hour, twice in 10 minutes or may not happen at all 3-4-5 hours long. It's completely unpredictable. After a while, Edge signal (not HSPA !!) gets back by itself. If I wait 10-20 more minutes, HSPA comes back again, until it drops again.
Moreover, at phone boot, just after typing my PIN Code, it usually takes 2 or 3 minutes to catch a signal. Very slow isn't it ?
It does not seem to be a network issue, since my Samsung Galaxy S III doesn't encounter this using the same SIM card.
I read on Google forums and probably some XDA threads that I was not the only one to face this kind of network issues, even on 4.4.2, but issue description was each time a bit different from mine, thus I tought that it may be useful to post a new thread to describe precisely what was my problem.
Edit : My Nexus 5 is unlocked and rooted, but issue is present on untouched 4.2.2 also.
Edit 2 : http://forum.xda-developers.com/showthread.php?t=2525583 is probably my issue.
Do no hesitate to answer if you're thinking that you have the same issue (or kind of) or if you think that you know something that may help.
Thank you .
KennyG9

You can flash the radio from version 4.4 that helps a lot, I'm at work just search this forum the directions are here, it's easy.
Sent from my Nexus 7 using Tapatalk 4

^^ He appears to be talking about the link below. You can flash different modems that may work. Some people say different modems helped but I've had no such luck. I've flashed every modem available and still don't have data almost everywhere I go. I have data at home but that doesn't really matter since I don't need my phone at home.
http://forum.xda-developers.com/showthread.php?t=2514095

Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks

dicecuber said:
Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks
Click to expand...
Click to collapse
Were would one find the carrier specific radio? I'm on T-Mobile but have only found the thread with modems. Nothing carrier specific.

Thanks for your answers. Unfortunately, flashing different modems does not seem to help .

i've read, the .15 is good with t-mobile.
i'm testing it today too. my problem is not only a signal drop, i have only edge too and my modem won't switch back to umts or hspa(+).
i'm in germany with t-mobile (congstar).

Mobile data cutting out

Hi all,
I am having a problem with my data connection, quite often when I am using my phone the internet connection icon next to the signal bars keeps disappearing and I loose connection, it's normally only a minute or so but it is quite annoying as it is quite regular and causes some downloads to fail.
I have tried different ROMs but I have the issue remains.
I am running a UK xt1032 device and couldn't wait for the official 4.4 ROM so I flashed the us global gsm rom, ( downgraded my bootloader to the 4.3 version so I could flash CWM ) but have since reflashed the 4.4 boot loader, but I was wondering if flashing the us ROM could could be affecting my connection as I believe the primary difference between UK and us ROMs is the radio frequency ( I might be wrong ).
So... Is anyone else having this issue, or is this a CM based ROM bug ( as all the roms I have used have been CM based ) or could my phone be faulty, or could it just be down to my network ( giffgaff UK ) as I do make the most of there unlimited data and I'm not sure if they giving me low priority.
Sorry for the long winded post, and thanks for any advice/feedback.
Sent from my XT1032 using xda app-developers app

Well not sure this will help you but lots of people in the uk have been having data cut out after upgrading to kitkat but that is accompanied by other issues.lots of info on the motorola forum.
https://forums.motorola.com/posts/48fb0b8150?page=1
Im with giffgaff and after i upgraded it was a nightmare,data cut out,random airplane mode with no symbol showing etc. i have now downgraded too jellybean and the phone is flying and has no issues at all.probably a different issue with you but thought i would mention it.

You flashed the US Radio firmware. Changing ROMs won't affect that. You have to flash the UK Stock firmware image which includes the UK Radio firmware.
Related post:
http://forum.xda-developers.com/showpost.php?p=49801348&postcount=3​

Hi all just thought I would post an update, I seem to have found a solution for my problem,
I had to go to network operators and select another network ( my network is giffgaff ) so I selected Vodafone, waited for the no service to kick in, then instead of selecting giffgaff I selected O2 and since then I have had NO drop outs, and its been almost 24 hours
Hope this helps.
Sent from my falcon using xda app-developers app

plewis1981 said:
Hi all just thought I would post an update, I seem to have found a solution for my problem,
I had to go to network operators and select another network ( my network is giffgaff ) so I selected Vodafone, waited for the no service to kick in, then instead of selecting giffgaff I selected O2 and since then I have had NO drop outs, and its been almost 24 hours
Hope this helps.
Sent from my falcon using xda app-developers app
Click to expand...
Click to collapse
Good thinking,keep us informed if it continues to work as i will update mine then .

Still going strong although I have a G at the moment rather than a H , but most importantly there is always an icon there
Nobody is perfect, I am nobody, therefore I am perfect.

STILL no visible problems with my signal
Nobody is perfect, I am nobody, therefore I am perfect.

Id recommend to downgrade back to 4.3 mate,my girlfriends moto g (Vodafone) (fully stock not rooted or unlocked)ota to kitkat4.4 had signal issues 24/7 mine was unlocked and rooted and had intermittent signal issues, reflashed 4.3 on both and no signal loss at all,in fact data speeds improved, on giffgaff on kitkat I couldn't get over 1 Mbps at home now on jb its pulling between 2 and 5 Mbps

Id recommend to downgrade back to 4.3 mate,my girlfriends moto g (Vodafone) (fully stock not rooted or unlocked)ota to kitkat4.4 had signal issues 24/7 mine was unlocked and rooted and had intermittent signal issues, reflashed 4.3 on both and no signal loss at all,in fact data speeds improved, on giffgaff on kitkat I couldn't get over 1 Mbps at home now on jb its pulling between 2 and 5 Mbps
Click to expand...
Click to collapse
I did reflash 4.3 but got board not being able to flash any roms, as this was one of the main reasons for me buying this phone. But since connecting to O2 signal seems fine
Nobody is perfect, I am nobody, therefore I am perfect.

[Q] Horrible reception-- new phone development

I've started having some horrible issues with my phone connecting to Verizon networks properly. I used to be able to connect to 4G networks at my house and surrounding area with no issue, but now I've been having the worst time getting it to lock. Currently I'm connected to 3G at -99dBm in my household.
I originally was running stock, but fully rooted, S-Off. I've since switched to trying AOKP and now I've settled on Sinless GPe 3.4.7. I have not seen any real difference between them as far as getting a good connection to the network. I started switching ROMs well after I've noticed an issue, and I have not done much of anything to my phone in the last few weeks that I could attribute to the change. I've never dropped the phone or damaged it in any way.
I just recently traveled across the state and would run speedtests next to my wife's iPhone 5c and 19/20 times she'd show full bars with LTE service while I was either on 3G or no service at all. My phone will connect to 4G sometimes though, it's just not that often.
I read that there may be an issue with my SIM card, so I stopped in and had it replaced. The guy seemed very confused about the state of my phone software, so he blamed any issue I was having on the software installed. Regardless I did get a new SIM card installed. It did not seem to help at all. Can anybody help me? I'd hope to not have to go through the hassle of attempting to get the phone replaced!
Bootloader information:
HBoot-3.16.0.0000
Radio-0.89.20.0321
After rebooting my phone, my phone locked to an LTE signal at -112dBm. It does not speed test at over 3Mbps. Testing my wife's iPhone shows her at -100dBm and she was able to pull 30Mbps down.

There is talk of poor signal reception/speed in gpe threads. Cm based Roms, dunno. Try flashing a sense ROM, do some tests and report back
I recommend clean ROM or any other ROM on Verizon base

I just received my M8 yesterday and am having the same issues (both wifi and LTE) running the latest PA. Going to try something with a VZW base and report back.

wtoj34 said:
There is talk of poor signal reception/speed in gpe threads. Cm based Roms, dunno. Try flashing a sense ROM, do some tests and report back
I recommend clean ROM or any other ROM on Verizon base
Click to expand...
Click to collapse
I reloaded my backup of the Stock ROM and I am still seeing the same issues. It seems to connect sometimes but most of the time it will not. It seems like its just not getting a good lock. I am having trouble even using the phone at my house now whereas I've always had great service here. Doing a speed test now, the phone states 3G service, tested with 705 ping, download of 0.17, upload shot up to 58.19 (which obviously isn't true) and then froze while testing and has been here for over three minutes.

serotoninzero said:
I reloaded my backup of the Stock ROM and I am still seeing the same issues. It seems to connect sometimes but most of the time it will not. It seems like its just not getting a good lock. I am having trouble even using the phone at my house now whereas I've always had great service here. Doing a speed test now, the phone states 3G service, tested with 705 ping, download of 0.17, upload shot up to 58.19 (which obviously isn't true) and then froze while testing and has been here for over three minutes.
Click to expand...
Click to collapse
I would run the RUU and try again, and just see if something got boogered

Confirming as well that the reception isn't the greatest with this phone/radio in the so so service areas.
I live out in the country. Never had good reception with Sprint no matter the phone. Switched to Verizon with an LG G2 and service was fantastic at home for the 7 months I owned it. I moved to the M8 and now phone service is spotty at my house. It's the radio for sure. Wifes verizon moto works great at home as well.

I've had the same issue, updated radios, flash back to stock, and everything else. The radio on this phone IMO is terrible, even when it does get 4G I get like 8 mbps down with 4 bars of 4g. Once in a great while i'll get 18 - 20 down with 5 bars of 4g.

I've been experiencing the same things recently as well. It also affects sending SMS messages. I am on stock too (with s-off). Nothing changed on my phone though, it just started dying.

Never had signal issues. I live out in the boonies too. Signal is strong and switching between 3g and 4g has been smooth. I've been able to download torrents as fast as 5mb/s. Speed test results have been just awesome. As far as signal goes, it's been better than my note 3, DNA, and my wife's droid mini. And this is my second m8. My son has the first and it is the same as mine.
I would look into exchanging them if they don't keep up with other phones. The radio in this phone is actually pretty damn sweet, so if u got a funky one, I'd exchange it. Def try the ruu first, then exchange if that doesn't help.
Sent from my HTC6525LVW using Tapatalk

[Q] Moto G XT1039 Signal loss problems on stock firmware

Hello! Apologies if I do some dumb mistakes forum-wise and pass as a total noon at this, cause I actually am! Anyway, here's my problem:
So a couple of weeks ago I tried CM12, an unnoficial CM12 by Beeto and CM11 by him too, I noticed a big major flaw with all of them, which made me go back to stock firmware... The cell signal sometimes is just very weak, and I'm experiencing this on the stock firmware too! I go look at battery>cell standby at the end of the day and I notice that it spends about 15% of time without signal, should this worry me? Its just that my friend's phones normally show "0%" or very very close in the same conditions! I'd like to know if there's a way to fix this in any way, either on the Roms I tried or the stock firmware (since I prefer custom Roms anyway)... I'll be waiting for a response! Thank you!
EDIT: My friends are reporting that my messages duplicate sometimes! Really need a fix for this, it's dumb :/

Also with an XT1039 here (rooted stock 4.4.4 w/ bb). Used a Samsung Galaxy Ace II before (CM11) and the signal has similar dropouts with both phones. Wondered if it was the firmware (on my old phone) but as far as I can tell (also tried my sim card with an old SonyEricsson V630) it is my service provider (E-Plus Germany). Moreover we have a pretty white (poor) provider coverage in Krautland (3G and LTE on E-Plus are basically only with full signal strength outdoors in major cities). So I guess nothing to worry about.

Questions on issues after flash 6603

Hello,
I am new to the Android world coming from the iphones I had jailbroken. I searched for and found answers to a bunch of issues I had with this last flash but am not finding anything specific to my question below so I hoped someone might shed some light or point me in the right direction. I have a Xperia z3 6603 on kitkat 23.0.A.2.93. I downgraded the firmware from what it came with to get root which it now has, BL still locked. Over time it started acting up so I re flashed last week with a new downloaded ROM I used D6603_23.0.A.2.93_Generic_20GLOBAL.ftf.
The one last major issue (I hope) is the weak signal. I am on AT&T and since the flash I get max one or two bars LTE (full bars before) in the big metropolitan areas...briefly it goes to 4 bars. I don't get the signal strength on H+ I got before either so checked my APN configuration based on a post I found dated 2015 and it matches. I thought since it was a global rom I shouldn't have issues with the modem. Is there something I need to install or configure to get my signal strength back to where it was pre flash?
Thanks again for any help....definite android newbie trying to learn as much as I can so don't have to bug anyone.

Every firmware has its own radio ROM which is responsible for the signal/cell radio modem settings.
You might want to flash the ROM specific to your country, not the global/generic one.
If you want to play and tinker a bit, go to phone and dial *#*#7378423#*#*(*#*#SERVICE#*#*) to play around with Network Mode or the Antenna RX diversity tests.
Or you could try *#*#4636#*#* (*#*#INFO#*#*) to play around with Phone information.
Enjoy and good luck