LTE antenna not coming online when leaving Wi-Fi - Nexus 6 Q&A, Help & Troubleshooting

Nexus 6 running Cataclysm 1/4/16 Stable. But I have this behavior on any ROM I try.
Often, when exiting range of a Wi-Fi area (leaving work for example), the LTE antennas do not come online. I see full cellular signal strength, but no LTE icon (or data icon of any kind). I lose cellular data access.
A workaround I have found is to, when i notice it, put the phone into airplane mode and back again. The LTE Icon shows after the cell connects and everything continues normally.
This is super annoying, I have tried several Kernels and ROMs to see if its a software problem but no luck. Any thoughts?

Desjani said:
Nexus 6 running Cataclysm 1/4/16 Stable. But I have this behavior on any ROM I try.
Often, when exiting range of a Wi-Fi area (leaving work for example), the LTE antennas do not come online. I see full cellular signal strength, but no LTE icon (or data icon of any kind). I lose cellular data access.
A workaround I have found is to, when i notice it, put the phone into airplane mode and back again. The LTE Icon shows after the cell connects and everything continues normally.
This is super annoying, I have tried several Kernels and ROMs to see if its a software problem but no luck. Any thoughts?
Click to expand...
Click to collapse
Go to developer options:
-Check: Cellular data always active
-ChecK: Aggressive Wi-fi to cellular handover
I toggled both options. Took me awhile to figure out why my signal was always being cut while on wifi

mikeprius said:
Go to developer options:
-Check: Cellular data always active
-ChecK: Aggressive Wi-fi to cellular handover
I toggled both options. Took me awhile to figure out why my signal was always being cut while on wifi
Click to expand...
Click to collapse
Thanks, I did that, will test later on when I leave work.

mikeprius said:
Go to developer options:
-Check: Cellular data always active
-ChecK: Aggressive Wi-fi to cellular handover
I toggled both options. Took me awhile to figure out why my signal was always being cut while on wifi
Click to expand...
Click to collapse
Works great! thanks a lot!

Wonderful, tyvm for this fix.
Sent from my Nexus 6 using XDA Labs

Related

WiFi and LTE/3G always on simultaneously?

Wondering if anyone knows what's up here?
On my D1 I either had WiFi OR 3G symbol in the notification vary. But since getting the Bionic I ALWAYS have WiFi and either 4G-LTE or 3G also. Is this normal? And if so, is it just a wonky indication or is it really accurate? I guess it doesn't really matter except in terms of battery usage, which seems fine. Of course if I turn WiFi off I then only have the LTE-4G/3G symbol.
This is all true regardless of whether I am in CDMA/LTE or CDMA Only.
Any/all guidance is appreciated.
les017 said:
Wondering if anyone knows what's up here?
On my D1 I either had WiFi OR 3G symbol in the notification vary. But since getting the Bionic I ALWAYS have WiFi and either 4G-LTE or 3G also. Is this normal? And if so, is it just a wonky indication or is it really accurate? I guess it doesn't really matter except in terms of battery usage, which seems fine. Of course if I turn WiFi off I then only have the LTE-4G/3G symbol.
This is all true regardless of whether I am in CDMA/LTE or CDMA Only.
Any/all guidance is appreciated.
Click to expand...
Click to collapse
Yeah I noticed the same thing. LTE is on all the time with wifi, the is no handover whatsoever. It is killing the battery by cell standby. There is no way to change this in any of the settings except turning data completely off.
Sent from my DROID BIONIC using Tapatalk
Same here. I hope they fix that. Lol.
Sent from my DROID BIONIC using XDA App
Actually I think you two are mis understanding the icons. If you read the manual, the one that turns BLUE is the active data connection. Some things (like the Verizon app) can only go over the verizon network. Additionally, you will ALWAYS have power to the cell radio (how else do you recieve an incomming call or a SMS?)
That is why LTE takes up so much batter across devices.
One of the best battery saving options (in my opinion) is to only use cmda unless you need the LTE - you can change that under mobile network options.
I am willing to bet people wanted to know IF they had cell reception in an area with out having to disconnect from wifi to see a graphical representation.
It isnt as sinister as it seems Keep in mind too that in order to do both voice and data, your data goes over LTE and your voice uses CDMA (that is off memory, i may have the bands reversed) so you are using two radios at once... welcome to the world of LTE battery draid
azwildfire said:
If you read the manual, the one that turns BLUE is the active data connection.
Click to expand...
Click to collapse
You had me at "if you read the manual"
This sounds about right. I had previously glossed over this because of being so used only seeing WiFi or Cell data. Makes sense now, thank you.
azwildfire said:
Actually I think you two are mis understanding the icons. If you read the manual, the one that turns BLUE is the active data connection. Some things (like the Verizon app) can only go over the verizon network. Additionally, you will ALWAYS have power to the cell radio (how else do you recieve an incomming call or a SMS?)
That is why LTE takes up so much batter across devices.
One of the best battery saving options (in my opinion) is to only use cmda unless you need the LTE - you can change that under mobile network options.
I am willing to bet people wanted to know IF they had cell reception in an area with out having to disconnect from wifi to see a graphical representation.
It isnt as sinister as it seems Keep in mind too that in order to do both voice and data, your data goes over LTE and your voice uses CDMA (that is off memory, i may have the bands reversed) so you are using two radios at once... welcome to the world of LTE battery draid
Click to expand...
Click to collapse
That's actually incorrect. There's a good amount of talk going around that the data radios (both 3G and 4G) aren't being turned off when switching to wifi, and causing even more battery drain. In GingerBread, the icons turning a different color (blue on Blur, green on basically everything else) doesn't mean it's got an active data connection, it means it's got an active connection to the Google services (for sync, etc). Every other phone shuts of the radios when connected to wifi, including the Charge, Thunderbolt and Revolution. And while you're connected to wifi, everything non-data related (text messages, calls, voicemail) is done over 1X, which is just the signal bars.
Interesting, so which radio keeps the 1x connection alive? how does it work when i am NOT on wifi and can browse the web and email while on a phone call? (Couldnt do that on my incredible)
And while comparing battery stats, cell stand by has a larger percentage on my T-bolt then it does on my Bionic (I checked them this morning, both were unplugged from the chargers when i went to bed)
They're separate radios, the 1X radio doesn't use nearly as much power so it can stay on all the time.
Are you implying the Bionic has 3 antenna? 1x - CDMA - LTE as all seperate antenna?
THe FCC filing shows only two. One that is a combined CDMA/LTE and one that is a combine WIFI and Blue tooth.
http://cdn.androidcentral.com/sites...w550h500/postimages/9274/droid_bionic_fcc.jpg
I am just curious as to your understanding. I think this is a healthy chat
And your previous mention of the icon color changing when they connect to Google services sort of affirms that it is the data connection (since I imagine they have to use the data connection to connect to google)
Interesting test. Wifi is connected, turned off mobile data under data settings and the 3g icon that looked to be connected disappeared... but I still had a data connection.
Is there an app that will allow you to write the logic- if wifi is on, turn off mobile data, and reset when wifi is turned off?
Sent from my DROID BIONIC using XDA App
I'm getting really bad battery life. Right now I am connected to wifi. I have 3 icons....wifi, 4g LTE, and signal bars. All are blue except the up/down arrows under 4G. What does this indicate?
There seems to be a bug where the phone doesn't shut off the radio when turning on WiFi, I've reported it to motorola.
bobreiter said:
Interesting test. Wifi is connected, turned off mobile data under data settings and the 3g icon that looked to be connected disappeared... but I still had a data connection.
Is there an app that will allow you to write the logic- if wifi is on, turn off mobile data, and reset when wifi is turned off?
Sent from my DROID BIONIC using XDA App
Click to expand...
Click to collapse
Tasker is a great app that should let you do that
It is paid though, but I don't mind paid apps if they are good (no different than donating to the devs here in my opinion)

[Q] HTC One signal drops

Hi all,
I have bought a Htc One M7 handset recently and I have noticed time to time there are No Signals (Limited Service) on it. When I switch off/ switch on or if I turn on the Airplane mode and turn off again, the signals will restore. This is happening around 2 times per day and really annoying. Need to know whether this is a known issue for the model.. I still didn't change the SIM and check. Please help!!!!!
Thanks alot!
Fellow Sufferer
shehanj101 said:
Hi all,
I have bought a Htc One M7 handset recently and I have noticed time to time there are No Signals (Limited Service) on it. When I switch off/ switch on or if I turn on the Airplane mode and turn off again, the signals will restore. This is happening around 2 times per day and really annoying. Need to know whether this is a known issue for the model.. I still didn't change the SIM and check. Please help!!!!!
Thanks alot!
Click to expand...
Click to collapse
I have the same thing
To add some detail for diagnostics see below:
- I travel into London every day and sometimes when signal drops in the tunnels it will never pick back up again after leaving them whereas my old One X did not have this on the same journeys.
- It even dropped out mid call and came up with the sim card icon at the notification bar as if no card inserted (but no selectable notification) first time its happened to this extent.
- Do you have a 4G SIM/connection or are you on 3G like myself? I'm thinking perhaps its something to do with trying to pick up 4G instead and completely disregarding the 3G connection that is available.
- I have also noticed that ever since getting the handset its never had as good signal as my One X which was pretty much always full signal in my normal areas (home, work etc) This may just be the way the handset gauges the signal not the signal itself but something to note anyway.
I'm having the same issue here in the US. It's prolly my only complaint with my phone.
Sent from my HTC One using xda app-developers app
I'm also having this issue but more sever with an all-day no signal. After reboot, I gain signal and I can't make and receive calls.
Try to turn 4G off.
mrcaligula said:
Try to turn 4G off.
Click to expand...
Click to collapse
How does one do that? Having the same problem, both wifi AND mobile network drop off. Wifi comes back on its own after a few seconds, the mobile data connection often comes back (obviously if not on wifi away from home), but the mobile network stays as no signal and doesn't come back, unless I reboot or cycle aeroplane mode. I know there's some problems with touching antenna, but this is happening a lot in the car, when the phone is powered and sitting in a cradle.
bmcconalogue said:
How does one do that? Having the same problem, both wifi AND mobile network drop off. Wifi comes back on its own after a few seconds, the mobile data connection often comes back (obviously if not on wifi away from home), but the mobile network stays as no signal and doesn't come back, unless I reboot or cycle aeroplane mode. I know there's some problems with touching antenna, but this is happening a lot in the car, when the phone is powered and sitting in a cradle.
Click to expand...
Click to collapse
To turn off 4G you go to Settings -> Mobile data -> Network mode and then select "3G / 2G"
don't know if it'll help though, but trying is worthwhile
nkk71 said:
To turn off 4G you go to Settings -> Mobile data -> Network mode and then select "3G / 2G"
don't know if it'll help though, but trying is worthwhile
Click to expand...
Click to collapse
Thanks. The problems seems to have gone with that change. Perhaps it is some system thing kicking me off the network because I don't have 4G on my contract and my phone was trying to get it.
Now, if you can just tell me why my lovely 3-4 bar indoors signal on EE has dropped to 0-1 outdoors (as they deny there is a problem)
bmcconalogue said:
Thanks. The problems seems to have gone with that change. Perhaps it is some system thing kicking me off the network because I don't have 4G on my contract and my phone was trying to get it.
Now, if you can just tell me why my lovely 3-4 bar indoors signal on EE has dropped to 0-1 outdoors (as they deny there is a problem)
Click to expand...
Click to collapse
Are you sure it's not just cosmetic? Try going into Settings->About->Network and see if the signal (dBm) is dropping.
Sent from my HTC One using xda app-developers app
I have it constantly on att - I have to turn on airplane mode and turn it back off to get my network back, I have tried different roms and updates and still the issue is across all roms.
Maybe try this: in your dialer type *#*#4636#*#*. Once the menu is opened, select Phone information, then scroll down to Set preffered network type and choose one of the options (im from Serbia, europe, and I usualy go with GSM auto (PRL)).
Issue with 3g only
Whenever I keep it on 3G, it drops signals for 2 to 7 seconds at random intervals. People often complain that when they call, they get a message that my phone is switched off.. I am probably gonna try another ROM and SIM to see if that helps before dumping this phone forever.
how to solve limited service or loosing service on htc one m7
Hello
it seems to be a hardware fault where the radio is not staying on higher band
it seems to be having issues on 2100 and all umts and hspda or lte networks
however switching back to 2 g can resolve this issue and phone ( hope so) will never lose signals or drop then again
i tried this and for me this works fine so far over 12 hours now no issue
give it a try and see this should work
setting>data>network>2g only
by this you wont have option to use fast internet though but at least you can phone can be used for voice calls messaging etc and also wifi too
I was on stock lolli pop and tried to flash cm12.1 but does not help sort the limited service issue
enjoy and leave your feedback
Edit:
some people cant find 2g in settins>mobile network>preferred network type> lte or 3g only, the solution is go to *#*#4636#*#* phone info>set preferred network type>gsm only( this will put your device into 2g mode)
hope this work

GSM Edge vs GSM HSPA/UMTS

So I have a pay-as-go plan, which means I normally keep data turned off. Well I just recently found out I can change the data connection type from 2g to 3g to Automatic. If I have it in 3g mode, the phone connects to "GSM HSPA+" or "GSM UMTS" even if I turn data off. However, if I change the data mode to 2G-only, the phone connects using "GSM EDGE" and I've noticed I get a much stronger signal and probably better battery life.
My question is do you think leaving it in 2G-only is in any way worse than 3G or Automatic? As in, are there any places I would potentially get HSPA/UMTS signal where I wouldn't get EDGE (like out in the sticks)? If not, then i'm just going to always leave it in 2G-only and enjoy the stronger signal. Then when I need data, i'll just switch to 3G and also enable data.
What ROM are you running on the phone? When you disable data, it should block all data access regardless of whether your phone is set to 2g, 3g, or auto.
audit13 said:
What ROM are you running on the phone? When you disable data, it should block all data access regardless of whether your phone is set to 2g, 3g, or auto.
Click to expand...
Click to collapse
It will block all data, but calls can still be done on the 3G network.
If you don't use your data connection, you're right, you're better off going 2G only. Better battery life, no hopping between 2/3G, and better signal.
souljaboy said:
It will block all data, but calls can still be done on the 3G network.
If you don't use your data connection, you're right, you're better off going 2G only. Better battery life, no hopping between 2/3G, and better signal.
Click to expand...
Click to collapse
For me, I choose wcdma only in the settings. 2g doesn't work for me since I'm on Bell.

[Q] Verizon Network Extender Issues

Anyone else with a Nexus 6 on Verizon using a network extender? It works fine for voice. However, I cannot get a data connection through the extender. I assume its an APN issue. All other Verizon phones are getting data fine through the extender.
Ideas?
Thanks!
I don't think mine is connecting at all to the extender at work. There is no icon change.
It works for voice. I get the beeping before a call. But it is not utilizing the extender for data. Its killing me because I'm in a fringe area for coverage and its killing my battery.
I'm running cm12 and whenever I connect to a network extender I loose LTE after I connect back to the network directly. I have to backup, flash stock ROM, let the phone activate then restore my twrp backup. Major PITA...
Sorry for resurrecting this thread, but has anyone found any resolutions to this issue?
I'm right at the edge of 3 towers, without my extender, I can barely text... Don't get me started on MMS... I will often miss calls also.
According to the Network Signal Info app, I'm always connected to the extender, but I get very weak signal. I rarely get 3G, if I do, it's even more rare for me to get data despite it showing 3G.
Usually it's 1x that eventually connects where I get data.
Sure, I can use WiFi, but text and especially MMS are issues. Who knows if I'm missing calls also...
Hopefully the Verizon firmware/radio files will work better when Verizon eventually releases it?
Try setting your phone to 3g instead of lte. Should jump on the extender for data. On mine it won't switch automatically.
goinflyn said:
Try setting your phone to 3g instead of lte. Should jump on the extender for data. On mine it won't switch automatically.
Click to expand...
Click to collapse
I did try that a few times, I haven't went too in depth with that. But if I recall correctly, changing that setting just left a "!" in the signal bars, no data. How's your signal strength on the extender?
It's half way up the triangle. Orange on the signal strength under battery. But it works.
goinflyn said:
Try setting your phone to 3g instead of lte. Should jump on the extender for data. On mine it won't switch automatically.
Click to expand...
Click to collapse
That doesn't work for me. 3G is HSPA on the N6, not EvDo like the extender requires. My workaround is connecting at home via wifi, then switching data to 1X. That solves calling, data, and SMS/MMS issues.
From what I've read in other posts regarding Verizon extenders, they are only for basic text and calls, NOT Data. Call Verizon support to confirm if you want a definite answer though.
Sent from my SM-P600 using XDA Premium HD app
Not true. It does data fine at both 1x and EvDo 3g. As I said, problem is, the N6 doesn't appear to work with 3g EvDo data.
greekstile said:
Not true. It does data fine at both 1x and EvDo 3g. As I said, problem is, the N6 doesn't appear to work with 3g EvDo data.
Click to expand...
Click to collapse
Correct. I've had my extender since 2011. Without data, MMS as well as certain other Verizon features would not function.
EV-DO working now!
greekstile said:
Not true. It does data fine at both 1x and EvDo 3g. As I said, problem is, the N6 doesn't appear to work with 3g EvDo data.
Click to expand...
Click to collapse
I just flashed the Android 5.1 radio on my 5.0.2 ROM running Chroma.
I can confirm that EV-DO Rev. A works now on the Verizon Network Extender.
When I have the network mode set to Global or LTE it keeps falling off 3G. I've set the network mode to 3G and it has stuck for a solid 30 minutes now.
Hopefully the stock 5.1 ROM will fix the 3G issue in LTE or Global modes, so it doesn't try to connect to the weak outside signals. But at least we get EV-DO now instead of just 1x!
kvnhmmd said:
I just flashed the Android 5.1 radio on my 5.0.2 ROM running Chroma.
I can confirm that EV-DO Rev. A works now on the Verizon Network Extender.
When I have the network mode set to Global or LTE it keeps falling off 3G. I've set the network mode to 3G and it has stuck for a solid 30 minutes now.
Hopefully the stock 5.1 ROM will fix the 3G issue in LTE or Global modes, so it doesn't try to connect to the weak outside signals. But at least we get EV-DO now instead of just 1x!
Click to expand...
Click to collapse
So are you on a VZW device?
My device says call cannot be completed when I #48 from my Google N6
three west said:
So are you on a VZW device?
My device says call cannot be completed when I #48 from my Google N6
Click to expand...
Click to collapse
Bought my N6 from Motorola around February.
Dialing #48 tells me I'm under network extender coverage.
kvnhmmd said:
Bought my N6 from Motorola around February.
Dialing #48 tells me I'm under network extender coverage.
Click to expand...
Click to collapse
hmm, thanks, no 3G option in my preferred network types on the stock rom.
I wonder if the network extenders actually validate the IMEI and that's why its not working. It worked on my old XT926.
I also have been fighting with this since getting my Nexus 6 last week...they say dial *48 and it will tell you if you are under extender coverage...which I am, yet a tier 4 tech tries to call me and it goes direct to vm.
I have changed units...still same....frustrated as heck.
I'm confused. If you have a network extender, you have Wi-Fi within the same range as the network extender. Why would you want to use 3G for data instead of Wi-Fi? Even the slowest Wi-Fi would be better than 3G data.
nhizzat said:
I'm confused. If you have a network extender, you have Wi-Fi within the same range as the network extender. Why would you want to use 3G for data instead of Wi-Fi? Even the slowest Wi-Fi would be better than 3G data.
Click to expand...
Click to collapse
In my case it's a restricted work wifi
Sent from my Nexus 10 using Tapatalk

Pixel 5 gets stuck in CDMA voice network type

After realizing that call dropping connections issues with my Pixel 5 were related to some radio issue that caused my phone to be stuck in the CDMA mode, I reset the connections and all was fine again. Phone was regularly switching between LTE and 5G and the voice network type remained in LTE mode. Prior to doing the reset, no rebooting or SIM swapping would cause the phone to get "unstuck" from CDMA mode.
So, now I have been watching the SIM card status and since I work in an area of really poor coverage, my phone does go into CDMA mode sometimes while at work. What I did notice, was if the phone was in CDMA when I left my job and traveled into a normal LTE service area, the phone remained in CDMA mode until I reboot the phone, and then it goes back into the normal LTE mode.
Has anyone else noticed this behavior? What behind the scenes app or process controls the switching of the voice network type? Any insight would be appreciated.
There is a network user built into the android kernel
but In settings Network and connections
Look for prefer 5G.... That should help your issue a bit
Dont use developer option aggressive wifi over cellular handover "keep it off"
Or there may be a software update that patches it
flairepathos.info said:
There is a network user built into the android kernel
but In settings Network and connections
Look for prefer 5G.... That should help your issue a bit
Dont use developer option aggressive wifi over cellular handover "keep it off"
Or there may be a software update that patches it
Click to expand...
Click to collapse
Not seeing a developer option about aggressive wifi over cellular handover. Only seeing a "mobile data always active" whcih says "Always keep mobile data active even when wifi is active for fast network switching", which is toggled on.

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