Nexus 5 LTE weak signal reception. - General Questions and Answers

Dear experts.
i have finally decided to share my ''unlucky epxerience'' with you.
i have got a serious problem which i have been fighting with since the first day i purchased my phone.
i have a white nexus 5 32 Gb version,D821 model.
and i'm from morocco,which means 4G will work for me because my phone is the indian version not the american version that doesn't support 4G in the rest of the world.
so,my problem is like that: when i first bought this phone i got stuck in ''emergency calls only'' for one week like every nexus 5 users did due to this known problem about the phone.
and after many reboots,clearing cashe,and searching manually for network,i got the signal again.
i never tried to switch to LTE mode,becuz i thought it would charge me a lot of data.
but,after a while i decided on and switched to LTE and got stuck again in emergency calls only !!!
i tried many things like contacting my carrier,searching manually,inserting another Sim card,force switching to LTe by dialing *#*#4636#*#*
but to no avail.
i decided to go to the nearest 4G tower and make sure if the problem had to do with 4G coverage or my phone's antenna.
then,i finally saw the LTE logo with full bar.
to sum up,now,i can't use 4G unless i'm near a 4G tower.
moreover,sometimes my phone loses signal even when i'm using only 3G which leads me to switch to 2G to catch the signal or reboot my phone many times and manually search for network.
i don't know if the problem has to do with the antenna or the bands of my phone.
and since i know nothing about flashing drivers or enabling bands.
i don't wana risk and end up by disabling any obviously enabled band.
i never took my phone to repair,because Lg service isn't available in my erea,plus i don't wanna give my phone to a dumb that would make it worse,because i fix my phone all by myself.
please help me solve this problem.
if anyone has any clue like repairing my 4G with octobox or trying to fix the antenna please.
any kind if suggestion is accepted.
best regards
Zakaria.
Edit : yesterday,i removed the back cover of my nexus 5 and found out that it's actually a D820
that's weird because rebooting the phone to bootloader it says D821 (H)
and i was wondering what does that (H) revers to ?
but the thing that confuses me is if it's actually a D820 why does it catches LTE near a 4G tower?
does that mean the bands are already enabled ?
do i still need to enable any other band to make it work properly ?
thank you so much in advance and waiting to hearing from you soon.

Related

LTE not working?! Manual Programming codez (updated)11-7

I got my Nexus 5 yesterday and finally got it working. I live right next to a LTE tower and I can't seem to get LTE.
1. Checked PRL
2 Checked Sim
3 Checked Profile
4. Called sprint
5. Checked network settings.
When i put the phone in airplane mode, and back off. It jumps to LTE for 2 seconds then 3g
Anyone having these issues ???
*manual re-fresh*
*#*#72786#*#*
after that, phone will reboot and "re-fresh network"
Also, my phone wen't into global mode, which you will need to change that back to LTE mode.
- Still isn't fixed ...
will report back ..
Manual Programming Code
*#*#675#*#*
edit: MDN = phone number
MSID: split
UPDATE
doing *#*#4636#*#* and selecting LTE only does indeed make LTE work both visually and functionally, with a loss of voice of course, but as soon as you go back to LTE/CDMA auto it'll require a reboot to take effect and LTE is once again not working.
(from sprint forums) - confirmed
I'm having these issues with Sprint as well. Thanks for your updates. I'll let you know if I learn anything.
Sent from my Nexus 5 using XDA Premium 4 mobile app
kylesum said:
I'm having these issues with Sprint as well. Thanks for your updates. I'll let you know if I learn anything.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You're Welcome,
Yes, this is very aggravating. My friends have LTE sprint phones and get LTE standing right next to me.
There is something wrong here! :/
On phone with sprint now, I hope they have an update.
Will report back.
Dj8218521 said:
You're Welcome,
Yes, this is very aggravating. My friends have LTE sprint phones and get LTE standing right next to me.
There is something wrong here! :/
Click to expand...
Click to collapse
Here is how I fixed it for myself on Sprint.
Settings > More > Mobile Networks > Network Mode
Change Network Mode from Global to LTE.
It will still connect to Evdo, ehrpd and Lte and switches between them as needed.
Luckily I haven't got hit with 1x since trying this out. My area has maybe one or two spots where I'd get 1x instead of ehrpd.
Settings hold after a reboot. I was driving to work today with my phone playing my music and it seemlessly switched between 3g and lte on it's own.
donatom3 said:
Here is how I fixed it for myself on Sprint.
Settings > More > Mobile Networks > Network Mode
Change Network Mode from Global to LTE.
It will still connect to Evdo, ehrpd and Lte and switches between them as needed.
Luckily I haven't got hit with 1x since trying this out. My area has maybe one or two spots where I'd get 1x instead of ehrpd.
Settings hold after a reboot. I was driving to work today with my phone playing my music and it seemlessly switched between 3g and lte on it's own.
Click to expand...
Click to collapse
We are not having the same issues then. In post #1. I've referenced checking the network settings. I've done this over and over.
Lucky you!
Dj8218521 said:
We are not having the same issues then. In post #1. I've referenced checking the network settings. I've done this over and over.
Lucky you!
Click to expand...
Click to collapse
I guess so because I was having that same initial problem you were where LTE would connect for a few seconds then when I tried to do anything with data it stalled out and went to 3g.
donatom3 said:
I guess so because I was having that same initial problem you were where LTE would connect for a few seconds then when I tried to do anything with data it stalled out and went to 3g.
Click to expand...
Click to collapse
Mine does that too.
BUT, nothing in the settings has been able to fix this.
How long since you activated? Mine would not connect to lte at all until last night... about 30 hours after activation.
Now it connects fine. I tried everything including flashing the modems posted in dev, swapping sims, trying every different network config and nothing worked except lte only mode which then kills 3g and voice.
lafester said:
How long since you activated? Mine would not connect to lte at all until last night... about 30 hours after activation.
Now it connects fine. I tried everything including flashing the modems posted in dev, swapping sims, trying every different network config and nothing worked except lte only mode which then kills 3g and voice.
Click to expand...
Click to collapse
Its been 2 days since activation. My LTE works with no voice too. But this needs fixed ..
Sent from my Nexus 5 using Tapatalk
I too am having the exact same problem as the OP. I can change the setting from Global to LTE and the phone will connect to LTE for a few seconds before switching back to 3g.
I am coming from the Note 3 on Sprint that got great LTE here at home, about 16mb down and 4mb up but I am hoping this gets resolved quick.
I'm on T-Mobile and it favors sticking on HSPA+ instead of LTE. If LTE gets down to one bar, the phone decides it's time to switch back. Compare this behavior to my Nexus 4 and it would stick on LTE come hell or high water. I would stay on LTE while in the office and this phone refuses to even get on LTE in the office. I don't get it.
Some have suggested this is a "power saving" feature, but I call BS on this because my Nexus 4 wasn't even intended to have its LTE radio used and LTE really didn't impact my battery. It felt like it lasted the same as it did before I enabled LTE on it.
Possible Sprint Fix
Customer: Is the SIM device specific? I reused the one from my Note 3. I have seen other information that the SIM's for the Nexus 5 are device specific.
Mitchell C.: Yes, you can get a SIM for the Nexus from a nearest Sprint store. I can fix an appointment for you.
Customer: so they are device specific?
Mitchell C.: Yes, they are.
Mitchell C.: We've come across a lot of these issues today.
Customer: SO just to be clear, I need to ask for a SIM for the Nexus 5?
Mitchell C.: Absolutely.
Customer: ok
Customer: that should correct my connectivity problem?
Mitchell C.: Yes, every service will work fine after you get it.
donatom3 said:
Here is how I fixed it for myself on Sprint.
Settings > More > Mobile Networks > Network Mode
Change Network Mode from Global to LTE.
It will still connect to Evdo, ehrpd and Lte and switches between them as needed.
Luckily I haven't got hit with 1x since trying this out. My area has maybe one or two spots where I'd get 1x instead of ehrpd.
Settings hold after a reboot. I was driving to work today with my phone playing my music and it seemlessly switched between 3g and lte on it's own.
Click to expand...
Click to collapse
vipergtsr6 said:
Customer: Is the SIM device specific? I reused the one from my Note 3. I have seen other information that the SIM's for the Nexus 5 are device specific.
Mitchell C.: Yes, you can get a SIM for the Nexus from a nearest Sprint store. I can fix an appointment for you.
Customer: so they are device specific?
Mitchell C.: Yes, they are.
Mitchell C.: We've come across a lot of these issues today.
Customer: SO just to be clear, I need to ask for a SIM for the Nexus 5?
Mitchell C.: Absolutely.
Customer: ok
Customer: that should correct my connectivity problem?
Mitchell C.: Yes, every service will work fine after you get it.
Click to expand...
Click to collapse
Well, I got my sim card from a sprint store 2 days ago and I am still having issues. I have been emailing sprint care but no luck.
I hope they fix this soon! Maybe they gave me the wrong SIM? Idk
Doubtful Mitchell knows what he is talking about. People have used HTC One SIMS and GS4 sims and have LTE. But, today is the big day the Sprint phones go on sale. Will be interesting to see if any of those people have the issue.
Evo_Shift said:
Doubtful Mitchell knows what he is talking about. People have used HTC One SIMS and GS4 sims and have LTE. But, today is the big day the Sprint phones go on sale. Will be interesting to see if any of those people have the issue.
Click to expand...
Click to collapse
Agreed
Sent from my Nexus 5 using Tapatalk
Still stuck on 3G after activating around 72 hours ago.
To follow up on the Nexus 5's "special" SIM card. I'm also skeptical about this. I'm using a SIM from a GS4 (part #: SIMGLW206R) which is the same SIM mentioned in this post about activating the Nexus 5 on Sprint: http://qbking77.com/google-nexus-5/activate-nexus-5-sprint/.
However, I called a nearby Sprint store to ask if they had any SIM cards available. They said yes but when I mentioned the Nexus 5 the representative seemed to think there was some additional procedure for coupling the phone and the SIM. I don't know any more about this. Could be misinformation of course.

[Q] Stuck on EDGE or GPRS

When I'm on data, my phone is stuck on EDGE or GPRS when it should go up to 3G or H+. I've tried restarting my phone, turning wifi on and off, turning data on and off and made sure my settings looked okay. Any help is appreciated!
Cataclysm 11/26, Franco r14, dalvik patch. And if it's relevant, I'm on Rogers wireless.
I'm not sure but doesn't Rogers use global frequency in which case you need the 821 model?
I've definitely had 3G and H+ on my N5 (abbreviations much?), but it just seems very inconsistent. It'll go from H+ to 3G, back to H+, then cut out completely, then sit on E or G for a while. Just trying to pinpoint the issue because it's getting annoying haha. Perhaps it's the frequency that's screwing it up but that's definitely not my area of expertise. I do have the D820 model if that's helpful.
I'm having exactly the same problem with Fido right now, I tried pretty much everything including
- flashing back the factory image
- tried every modems from the xda thread in the Nexus 5 Android Development section (currently my phone is on the D821 modem but it didn't change anything)
- changing my apn (but it was obvious that this was not the problem since the phone had a edge connection.
I'm really about to call Fido...
Still, I'm kinda glad to see that i'm not alone.
maybe that the data service in your personal area?
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
obsanity said:
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
Click to expand...
Click to collapse
I called Fido, the technical support told me that they had something that was blocking me from 3G (but he didn't tell me what it was, he just told me that something was blocking me...) I had my beloved H+ back for maybe a whole minute and then it just switched back to Edge network.
All I wanted to know was if many customers have reported the problem or if I were alone...
Maybe if I'm lucky my phone will get back its 3G soon just like you.
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
mark1s said:
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
Click to expand...
Click to collapse
Thanks for the update mark1s. Definitely let me know if a new phone fixes anything, although I'm also thinking it's a software problem.
The problem could just be that there happens to be patches of low coverage in the areas we're testing this out, which seems unlikely in big cities. But testing at work seems to have this problem, but testing this at home I pick up 3G and H+ just fine. Odd..

BAFFLED: no LTE, tried everything

(well, everything short of new SIM card)
The situation:
-bought a 32GB N5 from a guy
-I'm on Rogers in Canada
-on Lollipop
-cannot get LTE, only 3G and 4G (H)
-APN is correct
-checked everything in *#*#4636#*#*
-cleared cache
-reflashed facotry image
-tried Cataclysm
SOMETIMES, I'll get "LTE", but it's a phantom - there actually isn't a connection at all.
I've swapped phones many times before; never had an issue. I read in threads someone saying that on AT&T that you need to register IMEI with them to get new device working with LTE. I never had to before, but called Rogers to check if this is something they've started doing.....no.
Under device model, it doesn't say either 820 or 821. It says "Nexus 5"
I started thinking that I stupidly bought the international model off the guy, but then when i was in fastboot mode I saw that it did say 820.
So.............I'm stumped, puzzled and pissed.
Does anyone, ANYONE have suggestions or ideas? Many thanks!
Sanity check but worth investigating:
- Definitely have LTE coverage in your area? I assume other phones around you connect to same LTE network no problem
- Does the SIM connect to LTE in another known working phone?
eddiehk6 said:
Sanity check but worth investigating:
- Definitely have LTE coverage in your area? I assume other phones around you connect to same LTE network no problem
- Does the SIM connect to LTE in another known working phone?
Click to expand...
Click to collapse
Yep, coming from my old phone. Have always had coverage in all the areas I've been with this new phone. LTE SIM, LTE area...it SHOULD work, but is not.
Try a new sim at the store, if it doesn't work return it on the spot. No harm, worth a try
Does 3g work? What bands does your carrier run in your area? You might try the diag LTE screen (requires root, there's an app from the Play Store) and see what band it sees. Also have you tried doing a scan of which carriers are available?
MrObvious said:
Does 3g work? What bands does your carrier run in your area? You might try the diag LTE screen (requires root, there's an app from the Play Store) and see what band it sees. Also have you tried doing a scan of which carriers are available?
Click to expand...
Click to collapse
3G and 4G work.
I went to Rogers store and got a new SIM. No change.
Same thing...
I'm just posting to let you know I've had EXACTLY the same problem..
Mine occurred after I smashed the screen and sent it away to a company to be repaired. My N5 came back with a new screen, so immediately I upgraded to lollipop...
Then the LTE stopped working. Occasionally the device would say it was connected to 4G but, like you, it didn't work when it showed this. I tried everything, flashing, checking access points, flashing different radios...but nothing worked.
Now I can't work out if the repair company had somehow damaged the 4G antenna when they were fixing the screen. So I sent it back to be repaired (again)
Now i've got it back. 4G works but it has lost a lot of speed. Where I was getting 25mb/sec on average, I now get 10 max.
I've e-mailed the repair centre to find out what they did, but honestly, I've given up a bit now...
Wait, you upgraded to Lollipop? You realize that they included a new radio right? Try reverting modems.
Sent from my Nexus 5 using XDA Free mobile app

OnePlus One giffgaff/O2 POOR RECEPTION/ NO SERVICE

Hi,
I have recently purchased a used OnePlus One 16GB Unlocked phone from CEX, and it looks and performs great. However, upon trying my SIM it shows No Service/emergency calls only.
Ironically enough emergency calls arent possible either. I'm with giffgaff, (O2's network) and it would not make/receive calls where I live (West-London). Tried a Lebara sim too, same results.
IMEI number is fine, checked with CheckMend. Faffed about with APN settings, manually connecting to the network, but while I'm home it could hardly find O2's network and even then it shows no service. (usually finds EE and Vodafone but I haven't got those sims.)
Took it to work today and it seems to be working "fine" at work. What I mean by "fine" is that I can make/receive calls, watch HD youtube videos no problem, but download speed from various websites and from the play store would be about 20kb/s and connection would drop every now and then. Switching between 3G and 4G makes no difference whatsoever. Also tried the *#*#4636 options but if I switch preferred modes it doesn't save, it defaults to whatever it wants to upon reboot.
It improves outside of work and it's pretty usable, but it drops just before I get home. This area does have bad O2 coverage but with my old Samsung Galaxy S2 and sh*tty Sony Xperia E1 I always get a decent signal even at home.
So originally when I thought it had a dead antenna, I thought I would return and get a replacement, but upon googling around I found that OnePlus is at war with O2s network on some devices, so I might have the same issue. Flashing isn't really an option as I've never done it and even though I'm within 30 days I don't think I should brick it.
At this point if I get a replacement I might have the same issue, if I change networks I might have the same issue. I have a hard time convincing anyone at work to lend me their sims for a day.
Any advice would be appreciated. :fingers-crossed:
OS: Cyanogen 13.1.2. ZNH2KAS3P0-bacon
Elderberry 5
neverhangover said:
Hi,
I have recently purchased a used OnePlus One 16GB Unlocked phone from CEX, and it looks and performs great. However, upon trying my SIM it shows No Service/emergency calls only.
Ironically enough emergency calls arent possible either. I'm with giffgaff, (O2's network) and it would not make/receive calls where I live (West-London). Tried a Lebara sim too, same results.
IMEI number is fine, checked with CheckMend. Faffed about with APN settings, manually connecting to the network, but while I'm home it could hardly find O2's network and even then it shows no service. (usually finds EE and Vodafone but I haven't got those sims.)
Took it to work today and it seems to be working "fine" at work. What I mean by "fine" is that I can make/receive calls, watch HD youtube videos no problem, but download speed from various websites and from the play store would be about 20kb/s and connection would drop every now and then. Switching between 3G and 4G makes no difference whatsoever. Also tried the *#*#4636 options but if I switch preferred modes it doesn't save, it defaults to whatever it wants to upon reboot.
It improves outside of work and it's pretty usable, but it drops just before I get home. This area does have bad O2 coverage but with my old Samsung Galaxy S2 and sh*tty Sony Xperia E1 I always get a decent signal even at home.
So originally when I thought it had a dead antenna, I thought I would return and get a replacement, but upon googling around I found that OnePlus is at war with O2s network on some devices, so I might have the same issue. Flashing isn't really an option as I've never done it and even though I'm within 30 days I don't think I should brick it.
At this point if I get a replacement I might have the same issue, if I change networks I might have the same issue. I have a hard time convincing anyone at work to lend me their sims for a day.
Any advice would be appreciated. :fingers-crossed:
OS: Cyanogen 13.1.2. ZNH2KAS3P0-bacon
Elderberry 5
Click to expand...
Click to collapse
Could be band issue,but as you say it works on work(outside home) then for sure the sim is compatible with OPO bands.
This issue can be fixed by changing firmware of the device.
I know it would be seem hard at first but it's worth the work.Flashing firmware can greatly increase your signal strength and likely to cop out any issues with data and calls.
But first you need to flash Custom Recovery Twrp and before that you need to unlock the bootloader of your device.
To start with,
https://forum.xda-developers.com/showthread.php?t=2788632
You don't need to do the root section,just the bootloader unlocking then flashing Twrp.Its easy.
https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-lollipop-t3300907
Here's a firmware compilation thread just try them and use the one which suits your carrier the best.
Good luck

Poor S8+ data hangover...Bad 3G/4G signal/performance

I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Go to settings, connections, mobile networks, and tap network mode. Is 4G/3G/2G enabled? If not, enable it, and see if 4G connects
galaxyYtester said:
Go to settings, connections, mobile networks, and tap network mode. Is 4G/3G/2G enabled? If not, enable it, and see if 4G connects
Click to expand...
Click to collapse
Please READ CAREFULLY what I wrote.
stefan063 said:
I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Click to expand...
Click to collapse
Which Variant do you have? I had a similar issue when I first bought the Verizon S8+ to use on Cricket/AT&T. I ended up having to return it and get the AT&T one. The first one I had would run on 4G or LTE with 4-5 bars and would constantly loose service, and every time I would try to make a call it would switch to 3G and tell me that international calling was not on my plan until 3 or more attempts later. Then it would finally make the call on 3G network. Since I've swapped I haven't had this problem. No I still don't get as good of signal as my iPhone 7 plus but it's comparable now.
AndroiderM said:
Which Variant do you have? I had a similar issue when I first bought the Verizon S8+ to use on Cricket/AT&T. I ended up having to return it and get the AT&T one. The first one I had would run on 4G or LTE with 4-5 bars and would constantly loose service, and every time I would try to make a call it would switch to 3G and tell me that international calling was not on my plan until 3 or more attempts later. Then it would finally make the call on 3G network. Since I've swapped I haven't had this problem. No I still don't get as good of signal as my iPhone 7 plus but it's comparable now.
Click to expand...
Click to collapse
International Sim-Unlocked 955F variant (EXYNOS). It is OK to switch from 4G to 3G if operator doesn't support VoLTE on its network. But that is not my problem. Full bar 3G, surfing web and it switches to 2G. NOT NORMAL. Same as on 4G to 3G. Full 4G bars.
If you have tried factory reset and all other trouble shooting, I'd just set up a RMA and get a new one. If you are in the US maybe the Snapdragon if you're willing to sacrifice root. Sounds really annoying to have a phone with LTE and be stuck using 2G. Just my 2 cents
Got the same issue...
stefan063 said:
I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Click to expand...
Click to collapse
Hi Friend, it so true...
I use S8 Plus and experience the same issue. If we only use S8, we will never realized this fail but if we use another device like Sony Experia or Mi5 (my experience), we will realized that S8 has worse signal receiver. I complained it to Samsung through Twitter, just say they will check on it and never get back to my last message.
Kind of mess for an expensive phone and high class brand.
Same with me
mdarsika said:
Hi Friend, it so true...
I use S8 Plus and experience the same issue. If we only use S8, we will never realized this fail but if we use another device like Sony Experia or Mi5 (my experience), we will realized that S8 has worse signal receiver. I complained it to Samsung through Twitter, just say they will check on it and never get back to my last message.
Kind of mess for an expensive phone and high class brand.
Click to expand...
Click to collapse
I'm having the same problem, with 3G makes a hang out signal, and I need to turn on the airplane mode and turn off to get signal and H+ or 4G, did you find a solution with this issue?

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