yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Android Development] ChazzMatt:
Do you have a security lock on your lock screen? Like a PIN or pattern lock? Perhaps that warning simply means you will only be able to make emergency calls unless you unlock the security lock?

If you hit that "emergency calls" notice, it will immediately bring up the dialer. But only for emergency calls.

If you are in an accident you don't have to unlock the screen to call for police or ambulance.

But for "regular" calls, you don't want unauthorized people to make calls on your phone. Thus, with the security mechanism (PIN or pattern), only emergency calls are allowed until the phone is unlocked again.

Or am I misunderstanding?
[Nexus 5 Android Development] crazycage:
WOW I feel like such an idiot! You answered it buddy! All this time, I thought it was a modem problem with that notice on the lock screen but it was in fact just because my pin had not been entered yet... wow... THANKS so much for clarifying!! I have proven your idea by installing a delay lock pin app and notice that as long as there is no pin to enter, the message is gone but as soon as I force LOCK it again, the message returns! So yeah, you got it!

I still occasionally have network dropout and it has to re-register/establish on the network, but that is probably a totally different issue.
[Nexus 5 Android Development] spinal2k:
More feedback:

Some times, when transitioning from

"no network" to "celullar network"

"wifi" to 2G

i completely loose mobile data (i got signal for calls and texts, but no H, G or 4G on top of the signal icon)...after a while i get it back...
[Nexus 5 Android Development] toocool4all:
Kvt49l is not in the list why ? And I had purchased this phone which does not have original efs backup and the problem is 3g network is not working and so I was going to try to flash the modem in thinking it might work but I found that there was no modem for my version so please can Anny one help me which modem should I use and is it even possible to restore 3g network ? By the way I m on d820h with kvt49l
[Nexus 5 Android Development] aavvaallooss:
What is KVT49L? build number? Baseband versión? Unknow to me
[Nexus 5 Android Development] :
Hi,

Because it's AOSP, there is no change about the modem:

Here's the changelog: https://funkyandroid.com/aosp-KOT49H-KVT49L.html... I would say nothing interesting for us. Some roms here are based on AOSP with this release but nothing important.

The last factory image from Google, with the last modem like in the OP is here too: https://developers.google.com/android/nexus/images?hl=FR#hammerhead..., nothing new from Google since december.

Guys, don't mix AOSP and Google :D, some roms based on AOSP are on KVT49L but in any case there is not a new modem.

So no, there is no new modem until, maybe, Android 4.4.3 in a very near future :D

:)
[Nexus 5 Android Development] JazzVH:
So, after reading through the thread a little, am I right to conclude : having a D820 in a region with only band 3 LTE (or any other band not listed for the D820) , nothing will help me to get LTE on a D820 because the antenna differs from the D821?
[Nexus 5 Android Development] samersh72:
Yes, D820 will never work on Lte band 3 (1800)
[Nexus 5 Android Development] bitdomo:
[MENTION=2684188]autoprime[/MENTION] in your folder there is the BIN_LGD820AT-00-V10b-NXS-XX-OCT-31-2013-KRT16M-USER-16G+0.zip file which I need, but I just get 404 file not found error. I believe it is caused by the '+' sign in the filename. I am kindly asking you to resolve this problem. And as I see you have images from KRT01B firmware. Do you still have the tot file for it?
[Nexus 5 Android Development] keltsi95:
I'm on the same boat. I bought a Nexus 5 d820 from craiglist, the guy try his sim from AT&T and make some calls, and phone get Edge at the moment. He said it was the APN's etc. Later I have found out the he used OctopusBox with it and now it doesn't have 3g/4g. It only connects on Edge. Have tried a Factory image but still have the problem. Don't know what to do next.
[Nexus 5 Android Development] eLLuSioNiST:
Hii...can somebody please upload the latest radio for D821 because the link is dead!!? On the modems site!! And thanks
[Nexus 5 Android Development] maidenboston:
works for me
[Nexus 5 Android Development] Private.Indo:
question? if i backup EFS will that mean i'm save from imei lost, i mean someday if my imei got broken / unknown, i just have to flash file .zip from EFS_Backup

another question, what is modem do?
[Nexus 5 Android Development] coolek33:
If it will be hardware related (like it was in my case) no efs backup will help. Backup this partition and store it somewhere (pc, flash drive etc.) and don't touch this partition again. Don't backup and restore while flashing roms (twrp) and U won't have to be worry about imei. About modem, if U feel like the one on your device has a good signal strength and stuff like this on your location leave it be. If you feel not satisfied try another one and see witch is better for you.
[Nexus 5 Android Development] aavvaallooss:
1. Y es

2. 2G, 3G, 4G...
[Nexus 5 Android Development] fergietime:
Does anyone know if there is a way to disable 2g and just use 3g/4g? I know there's no option in *#*#4636#*#* menu but is it impossible?
[Nexus 5 Android Development] aavvaallooss:
GravityBox, of course. Smart radio feature
[Nexus 5 Android Development] fergietime:
Thanks, but I don't see the option. What is it called? I just want a 3G/4G mode.
[Nexus 5 Android Development] aavvaallooss:
Put LTE in"Normal network mode" and 3G "Power saving mode" for example; avoiding 2G. Just an idea
[Nexus 5 Android Development] fergietime:
Yeah, I'm trying that now. Good idea. Do you know which LTE option is LTE Only? LTE global?
[Nexus 5 Android Development] aavvaallooss:
I don't known. I don't have 4G until July (if lucky)
[Nexus 5 Android Development] Shiesh1:
Is there any way to revert to the older bootloader? (Hhz11d) I'm finding I'm having trouble with data connection, no matter what baseband/APN combination I try. Never had this problem before

D821
[Nexus 5 Android Development] aavvaallooss:
Bootloader and data connection aren't related IMO
[Nexus 5 Android Development] Shiesh1:
That's what thought but for some reason since updating my bootloader my data is not as good. I think I'd like to work out if it is actually yht bootloader that may be causing it
[Nexus 5 Android Development] nexzor:
i would suggest you to flash the factory image krt16m, old bootloader is included there. but i don´t know if it realy will revert the bootloader
[Nexus 5 Android Development] Shiesh1:
How would I go about creating a zip for that bootloader?
[Nexus 5 Android Development] TheAnarchist1:
Well,...I would have to say, that after rather extensive testing of every radio, meaning about two weeks worth of usage for each.. The .17 radio seems to yield the best performance for me, ie: only between 12-25% time without signal, as opposed to the latest.

.15 comes in close second for me, with about 20-30% time without signal.

I know radio mileage is subject to location (mine, being Baltimore MD), and device, but I just figured I would put that out there for any who were testing around ^_^

Whatever you do though....try to avoid the latest radio. It yields on average for me at least, about 70-80% time without signal. :eek:

EDIT: I am using a T-Mobile device by the way, with the latest bootloader.
[Nexus 5 Android Development] rickyiswhite:
Whats the advantage of flashing this?
[Nexus 5 Android Development] littleguevara:
In theory you could get better service, which would translate to better battery life. Conversely, it could make your service worse and negatively impact battery life.
[Nexus 5 Android Development] micens:
Hi,

I backed up EFS partition through TWRP, and i get efs1.emmc.win and efs2.emmc.win, not .img files... Is this way to backup ok?
[Nexus 5 Android Development] aavvaallooss:
Yes, 2 separate folders
[Nexus 5 Android Development] micens:
Thank you. But I don't understand, which folders? I have only these two files, and md5 files...
[Nexus 5 Android Development] aavvaallooss:
2 files, not folders. My fault
[Nexus 5 Android Development] micens:
Thank's :good:
[Nexus 5 Android Development] ejkeebler:
Looking for some hope. This week, backed up my EFS with the flashable script, saved it to the could, installed CM11, decided I was going to go back to stock. Flashed-all from the google images, rebooted and no service. So tried flashing my efs through ADB sideload, got an error footer wrong message. installed twrp, flashed the efs backup fine, rebooted still no service....is there any hope for me??? Google will not be happy with me as I just warranteed one last week....sigh.....
[Nexus 5 Android Development] samersh72:
did you wipe data and cache after stock?

it may help

do you have unknown baseband in about devices?
[Nexus 5 Android Development] ejkeebler:
yes unknown baseband and imei, tried wiping data and cache....
[Nexus 5 Android Development] samersh72:
try to flash only the radio.img and the cache.img from stock package
[Nexus 5 Android Development] ejkeebler:
so just flashed cache.img and radio.img from the official package, baseband and IMEI still unknown....
[Nexus 5 Android Development] samersh72:
it happened with me once when i flashed stock, efs was not detected, so a simple reset fixed the problem....weird!

i suggest to restore efs1 and efs2 images (from the backup) manually using "dd" command.

then reset, reboot.
[Nexus 5 Android Development] ejkeebler:
ok going to follow the instructions below, should i just copy the efs1 and efs2 from inside the zip to the root of the SD card, or should I create an EFS_Backup folder, can't see why that would matter, and i'm guessing I'm going to have to do this while the phone is in the bootloader?

Restoring EFS

To restore your original EFS just boot into recovery and flash the efsbackupflashable.zip in your /sdcard/EFS_Backup folder.

If flashable zip wasn't created or to manually restore efs img files run the following commands using adb shell while in recovery:

dd if=/sdcard/EFS_Backup/efs1.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst1

dd if=/sdcard/EFS_Backup/efs2.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst2
[Nexus 5 Android Development] samersh72:
just put the 2 efs images in your sdcard (not in any folder) then boot into

custom recovery

connect your phone and type (enter after each command) :

adb devices
adb shell
dd if=/sdcard/efs1.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst1
dd if=/sdcard/efs2.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst2

to be sure, each efs image is around 3MB
[Nexus 5 Android Development] ejkeebler:
~ # ←[6ndd if=/sdcard/efs1.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst

1

dd if=/sdcard/efs1.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst1

6144+0 records in

6144+0 records out

3145728 bytes (3.0MB) copied, 1.186185 seconds, 2.5MB/s

~ # ←[6ndd if=/sdcard/efs2.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst

2

dd if=/sdcard/efs2.img of=/dev/block/platform/msm_sdcc.1/by-name/modemst2

6144+0 records in

6144+0 records out

3145728 bytes (3.0MB) copied, 1.166570 seconds, 2.6MB/s

~ # ←[6nadb reboot

Everything is still unknown....starting to think i'm screwed, Google and Wife are not going to be happy....
[Nexus 5 Android Development] samersh72:
hmmm...now reflash stock an wipe directly
[Nexus 5 Android Development] ejkeebler:
so everything was going smoothly with that until...

writing 'system'... FAILED (remote: Unknown chunk type)
[Nexus 5 Android Development] samersh72:
flash each image separately, dont use flash.all
[Nexus 5 Android Development] ejkeebler:
that's what i was doing, system is the only one that failed....going to re download KOT49h just in case....
[Nexus 5 Android Development] jcsww:
Have you tried flashing the EFS with CWM instead of TWRP?
[Nexus 5 Android Development] ejkeebler:
i have not, can that make a difference, totally open for suggestions at this point :)

---------- Post added at 01:22 PM ---------- Previous post was at 01:00 PM ----------

Well not sure what fixed it, but it's going again, thanks for all the help! Started from square one after re downloading the google images, flashed each image rebooted and LTE was back, so no clue what caused the fix, but thanks to everyone for the advice.
[Nexus 5 Android Development] jcsww:
It can. Personally, I have always found CWM more reliable but that's just me. It definitely can't hurt to try.
[Nexus 5 Android Development] howard bamber:
Really happy to get a positive outcome reading though this. Giving you all a thx!

From my mobile telephony device.
[Nexus 5 Android Development] LNJ:
TWRP has screwed up more EFS partitions than I can count. It's such an unreliable custom recovery.

Sent from my Nexus 5
[Nexus 5 Android Development] CRIME INC.:
I wouldn't necessarily blame twrp. I haven't had an issue at all.

sent from my HAMMERHEAD
[Nexus 5 Android Development] samersh72:
Not offending twrp, but i prefer cwm or Philz recovery :)

Sent from my N91
[Nexus 5 Android Development] flex360:
Why?
[Nexus 5 Android Development] samersh72:
I just feel that twrp sometimes dont work properly. Always a simple recovery did the job

Sent from my Xperia L
[Nexus 5 Android Development] aavvaallooss:
Users screwed things, not a particular recovery
[Nexus 5 Android Development] autoprime:
TWRP FTW
[Nexus 5 Android Development] paychex:
So this is where you went
[Nexus 5 Android Development] Notechis:
If a User cant handle the recovery, it is the User... Nothing wrong with TWRP
[Nexus 5 Android Development] :
Are there 4.4.2 modems?
[Nexus 5 Android Development] CRIME INC.:
No

sent from my HAMMERHEAD
[Nexus 5 Android Development] :
Can these be flashed onto 4.4.2 ROMs, then?
[Nexus 5 Android Development] CRIME INC.:
Yessir

sent from my HAMMERHEAD
[Nexus 5 Android Development] Theshawty:
After reading through the thread, I have one question:

I take it the 4.4/4.4.2 update(s) screwed up the signal for pretty much everyone? I bought a Nexus 5 the other day and received it yesterday (after much hassle with being scammed at first) and it already ran 4.4.2. I have terrible signal compared to my HTC One (which is now being repaired) and also my brother's spare Gnex I borrowed for a few weeks.

I do not use LTE because I don't have it on my plan (and in the settings I set it to prefer 3G) but I literally have a terrible signal. Zero to two bars and lots of dropouts (none that requires a reboot, though)

You speak of the .15 and .17 radio but how would I know which is which? They're not named like that in the OP (or am I blind?).

Oh, and I have the D821 (I'm Swedish).
[Nexus 5 Android Development] justbabu:
The radio serial is shown after M8974A.
[Nexus 5 Android Development] Theshawty:
Yeah, I know, but it doesn't say which is which in the OP when downloading the files so you'd have to flash them beforehand and I would want to know which was before before flashing...

I flashed the only D821, though, and it was the .17 one but it didn't help my signal at all.
[Nexus 5 Android Development] justbabu:
Just look again at the 1st post. KOT49E has the latest radio ending in .23. I personally use the .17 radio as it gives the best reception for my phone. Try the one that works for you.

Sent from my Nexus 7
[Nexus 5 Android Development] Theshawty:
I must have missed that, lol. I'm blaming tiredness.

I dunno what will work for me. All I know is that both the .17 and .23 gives me bad reception and it might even be down to hardware level. The N5 is sort of a budget phone compared to my One (price-wise).
[Nexus 5 Android Development] :
I get exceptional reception. Just test one per day and see which one works the best. They make quite a difference -- I lost three percent in seven and a half hours overnight, with an interruption by a notification, and had four bars of H+ service (AT&T's version of 4G).

Quick question, is there any relation between battery life and signal? It seemed like the modems that had better battery life also had better reception. Is this because of the fact that connecting over a spotty connection takes more battery life?
[Nexus 5 Android Development] aavvaallooss:
H+ os not 4G. LTE is
[Nexus 5 Android Development] pilotmills:
If you want to get technical, current LTE deployment in the US doesn't meet 4G specs either.
[Nexus 5 Android Development] :
I have never gotten anything but H or H+, and I live in the middle of silicon valley. I'm fairly confident that it's the best I can get.
[Nexus 5 Android Development] AliLaPointe:
Noob question ahead

So if I were to flash one of these modems, there is a possibility that my signal will increase? I am currently on .17 and often have a yellow signal meter in the battery settings/view screen. If I were to flash .15, could I expect a green meter in the same screen?
[Nexus 5 Android Development] aavvaallooss:
H+ = 3.75G

LTE = 3.99G

Do you agree? ;)
[Nexus 5 Android Development] teh roxxorz:
By yellow, I would suspect 'time without signal,' which would eat up your battery. Flashing another modem could give you better results. I'm on the latest, .23, and works well for me. You'll have to try, as results will vary by location.
[Nexus 5 Android Development] DroidIt!:
Just seeing some of the conversation here, but I've read there'll be a firmware update with the 4.4.3 release. Many fixes will be specifically for the N5. The firmware part I'm about 60% sure on and the N5 fixes 100%. Wait a couple more weeks and I'm betting there'll be new radios etc. Not 100% positive, like I said, but that's what I've been reading.

from my N5
[Nexus 5 Android Development] Jonathanlc2005:
Correct me if I'm wrong but it appears...

.15 for sprint spark beta testing and CDMA performance

.17 for gsm performance

.23 for general radio
[Nexus 5 Android Development] y2whisper:
Sounds like it.
[Nexus 5 Android Development] :
I've tried them all out and the third one is by far the most successful (2% lost in eight and a half hours!), but whenever I boot up, upon clicking on an app with that modem, it half reboots (goes back to the ROM boot screen). I flashed a different modem and the problem seems to have subsided, any suggestions though? I would very much like to use that modem. I'll flash it and try again later today, but I'd like some insight.

Could it have to do with the fact that I'm using ElementalX?
[Nexus 5 Android Development] xbxjunkie:
anyone running .17 radio on 4.4.2?

i'm running .23 and signal bars are nonexistent most of the time
[Nexus 5 Android Development] ChimneyBoy:
Running .15 and all is well. It really depends on the coverage of your network and the area you are in... Try them all and test them for a day or 2. .23 was giving me horrible battery drain due to constantly searching to stay connected to the network.
[Nexus 5 Android Development] SketchyStunts:
I am running .17 works best for me out of .15 & .23...I still get data drops occasionally but have a better signal overall at my house. On Sprint
[Nexus 5 Android Development] CRIME INC.:
Yup, .17 works the best for me also. I'm on Sprint
[Nexus 5 Android Development] Shanks:
I get 25 mb download and 10 upload with .17, how about you? I'm on sprint too
[Nexus 5 Android Development] CRIME INC.:
About 15 download and 10 upload. During peak hours
[Nexus 5 Android Development] madroamer:
Lost data connectivity of D820 Nexus 5. i cant connect to data service with GSM mode too. can anyone provide the mode flashable file ?

I tried stock radios & was unsuccessful too.

Some tweakinf of radio settings backfired. i cant get calls & sms. only dat dont start/connect.

somebody suggest a way
[Nexus 5 Android Development] Starsream88:
I have no service for 3 days now ! Dont know what's happening !

Tried everything : flashing different radios, factory reset, back to stock, checking apn's ... My sim card is valid and working fine on other phones ! I just can't use my N5 for making calls anymore !!

It seems to be a general issu, maybe the next ota will solve this problem ... Waiting !

Envoyé de mon Nexus 5 en utilisant Tapatalk
[Nexus 5 Android Development] gravedigger76:
Which modem version is the latest to use with AT&T?

Thanks
[Nexus 5 Android Development] madroamer:
Hopefully so. But I used dfs to make some setting but don't know wat happed I didn't change any suddenly things failed on me. I don't get data service alone
[Nexus 5 Android Development] :
Do you guys have EFS backups?
[Nexus 5 Android Development] jd1639:
Of course, just in case. Never had to use one though
[Nexus 5 Android Development] aavvaallooss:
Same situation
[Nexus 5 Android Development] CRIME INC.:
Not just yes, but hell yes. Although, like mentioned by the two prior posts, I too have never had to use it.

Sent from my Nexus 5
[Nexus 5 Android Development] the.emilio:
Per OP.. Boot to recovery, flash EFS backup zip like you would a ROM.
[Nexus 5 Android Development] Theshawty:
Something is seriously off with this phone. Like, annoyingly so. It loses connection completely a lot of times during the day and the connection is pretty much crap all over. I'm seeing mostly 2G speeds on a plan where I have 3G at best (no 4G - too expensive)

With other phones, I have a strong signal and H+, with this phone I have Edge most of the time.
[Nexus 5 Android Development] grifis78:
Have you tried 0.15 modem? I have better performance with this

Inviato dal mio Nexus 5 utilizzando Tapatalk
[Nexus 5 Android Development] Theshawty:
There's no .15 modem for the D821 in the OP.
[Nexus 5 Android Development] grifis78:
No problemi, is the same. I have d821 too

Inviato dal mio Nexus 5 utilizzando Tapatalk
[Nexus 5 Android Development] Theshawty:
Ah, yes. I missed that part.
[Nexus 5 Android Development] darksora145:
I need some help guys. I backed up my efs to my SD card and also backed it up on Google drive just in case. It was on the latest .23 for d820. I flashed .15 and everything was fine. But I wanted to revert back to the original baseband I had before. Do I used twrp and flashed the efs back up on my SD card and the process was successful. So I rebooted the phone and checked in the settings and I still see .15 as my baseband instead of .23. Can anyone explain why it didn't revert?
[Nexus 5 Android Development] melbourne408:
Has nothing to do with what you are talking about.

There is no reason to worry about a modem change unless you are flashing a factory image.

If there's a # thats off, pick the modem # you want from the OP, flash it, problem gone!
[Nexus 5 Android Development] darksora145:
I just wanted to do that because I didn't want any hiccups when newer android updates are released but thanks for your reply I will just flash the base band in op thank you
[Nexus 5 Android Development] :
Is there an easier way to find the best modem other than flashing them each night and seeing the results?
[Nexus 5 Android Development] justbabu:
Unfortunately, no. Each person's experience is going to differ because of the myriad variables when it comes to cell towers, apps installed, phone cases, etc.
[Nexus 5 Android Development] :
When I bought my nexus 5 it was on 23 after reading this thread I decided to flash 17 and I notice a HUGE difference in speed and reception!! I had 2 bars on 23 and I have 3 bars on 17 much of the time and speed test went from 7-9mbps-17-21mbps!! I live in Biloxi Mississippi in case anyone is near and wants to get a good radio.. Tks op and all who posted on thread and shared results!

17 being: D820-KRT16M radio..

I'm on Sprint..

Sent from my Nexus 5
[Nexus 5 Android Development] maidenboston:
give 15 a try and see what happens.

i've been on 15 for awhile, worked nicely..

17 too..

23, i was skeptical to use due to the bad reviews, but these past two weeks, i flashed 23, and it seems just the same, notice no slow downs or weaker signals

so, in the nyc area w tmobile, i noticed no difference between the three radios...
[Nexus 5 Android Development] :
Will do. I was blown away at the difference in speed and signal from 23-17. Ha. Will give 15 and see what happens.