Related
Have we received a clear answer on how this works? Has anyone else noticed that when you loose 4g signal while on a call that the call will drop?
Sent from my ADR6400L using XDA App
phillycreamboy said:
Have we received a clear answer on how this works? Has anyone else noticed that when you loose 4g signal while on a call that the call will drop?
Sent from my ADR6400L using XDA App
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i know this is gonna sound mean but it makes sense. if u lose 4g its not a smooth transition. so until it reconnects to either 3g or 4g u tech dont have any service
Unfortunately they are right. There needs to be a better setup as anything up to 3G runs on the same CDMA radio, so therefor it switches and forces a dropped call. 4g is a separate card and works on it's own. Until there is a way to get "just" calling and 4g (aka turning 1X 2g, and 3g off but not 4g) it will continue to do that. I assume custom ROMs will do this in time, but as of the moment it's a known issue that it happens. Sorry to hear it causes you and so many others troubles.
kdb424 said:
Unfortunately they are right. There needs to be a better setup as anything up to 3G runs on the same CDMA radio, so therefor it switches and forces a dropped call. 4g is a separate card and works on it's own. Until there is a way to get "just" calling and 4g (aka turning 1X 2g, and 3g off but not 4g) it will continue to do that. I assume custom ROMs will do this in time, but as of the moment it's a known issue that it happens. Sorry to hear it causes you and so many others troubles.
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Click to collapse
well.....you could go into that secret menu and just enable LTE radio. i dont remember what the code was tho
Your phone calls do not go through the 4G network so that actually would make no sense at all... Your phone routes calls through the standard radio all all data through the 4G radio (if available). If you do not have 4G coverage, the both voice and data are carried on the standard 3g signal. This is Verizon's first simultaneous data and voice over 3g (yes, cdma data and voice) and there are known issues with the tech right now. However these issues have zero to do with any phone using 4G for data while you're on a call. Hope that helps clarify.
Sent from my ADR6400L using XDA Premium App
So why is the 4g signal loss causing dropped calls?
Sent from my ADR6400L using XDA App
phillycreamboy said:
So why is the 4g signal loss causing dropped calls?
Sent from my ADR6400L using XDA App
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That's what I'm trying to figure out. Unless it's poorly programmed, it should maintain the voice connection as that's over 1x and independent of LTE.
phillycreamboy said:
So why is the 4g signal loss causing dropped calls?
Sent from my ADR6400L using XDA App
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Click to collapse
It's most likely the same problem that Pantech UML290 users are experiencing when dropping from 4G to 3G, and both devices are using the exact same Qualcomm MDM9600 chip. If you look at the Engineering Mode when the drop from 4G happens, your phone doesn't just fall back to 3G, but it actually lose the connectivity for a few seconds and then "redials" back into the data connection.
I hope they fix this real soon.
When you lose 4g, the data tries to resume on 3g, and since no 3g and calls at the some time, you get data on 3g and dropped call
kdb424 said:
When you lose 4g, the data tries to resume on 3g, and since no 3g and calls at the some time, you get data on 3g and dropped call
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Click to collapse
That's incorrect.
you have to have CDMA service for a voice call. EVDO alone will not allow a voice call, LTE alone will not allow a voice call. you should be able to lose 3g and keep your call going, and you should be able to lose 4g and keep your call going.
Maybe that's their way of preventing talking while driving. lol.
milan03 said:
That's incorrect.
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So your saying I can make a call, and have 3g? Cause what I described happens on my phone. It resumes data, and kicks my call.
kdb424 said:
So your saying I can make a call, and have 3g? Cause what I described happens on my phone. It resumes data, and kicks my call.
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Click to collapse
You should be able to use data and voice at the same time on 3G.
It happens because both radios power down to meet SAR requirements. Two radios at full power = too much radiation
need bb said:
It happens because both radios power down to meet SAR requirements. Two radios at full power = too much radiation
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Click to collapse
This is why we have brave hackers on jobs like this ob. Not sure if it'll happen or get widespread, but I'm sure someone is working on it/done it.
I don't see how that can be true. What does Verizon say?
Sent from my ADR6400L using XDA App
SVDO uses two transmitters simultaneously for voice+data over 3g. EVO has been using 4g+voice over CDMA for a long time.
look at the last couple pages of this document
http://www.qualcomm.com/common/documents/articles/1X_Advanced_Benefits_050509.pdf
I don't know if simultaneous voice+data over 3g is only available where verizon has 1x advanced or not. since SVDO only requires the handset to have the capability, it would make sense that it could use regular 1x and evdo simultaneously but it would use more spectrum.
phillycreamboy said:
I don't see how that can be true. What does Verizon say?
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Click to collapse
It is true.
Verizon says it is a limitation of their network system and that dropped calls will indeed happen when you leave a 4G zone. They have intentionally designed their network not to fall back onto CDMA when 4G is lost, and they hope their customers will be patient while they expand their 4G coverage - which is occurring at a very fast clip. See the following bit from CTIA this week:
However, Verizon has taken the view that it will minimize annoyances for users handing off between LTE and CDMA, because its LTE coverage will be so wide so quickly. For this reason, it is not bothering to invest in systems to support fallback to CDMA for voice calls when a customer moves out of an LTE zone. Although the call will break in this situation, it will be a rare occurrence, insists the cellco. CTO David Small reiterated the point at CTIA, saying: "At the velocity at which we are pushing LTE markets, this becomes a non issue."
From... http://www.rethink-wireless.com/2011/03/23/verizon-att-cross-swords-4g-plans.htm
But LTE is not handling voice on thunderbolt.
Sent from my ADR6400L using XDA App
I've been having this problem probably once a day since I've gotten the phone where my phone will lose data signal while switching between 3G and LTE and the only way to get data back is to restart the phone. Turning airplane mode on and off won't work either.
Ive had that issue too..but most of the time it switches back n forth no problem
bik2101 said:
I've been having this problem probably once a day since I've gotten the phone where my phone will lose data signal while switching between 3G and LTE and the only way to get data back is to restart the phone. Turning airplane mode on and off won't work either.
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Click to collapse
Sent from my ADR6425LVW using XDA App
I haven't noticed any data problems until today. I am unable to connect to 3G. We do not have 4G in my area.
These problems are probably bugs in the LTE System.
Sent from my Galaxy Tab 10.1
jbh00jh said:
These problems are probably bugs in the LTE System.
Sent from my Galaxy Tab 10.1
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Click to collapse
why should bugs in the LTE system affect 3G?
the 3G our phones use is not exactly the same as standard 3G unless you force your phone into EVDO 3G via the ##778 menu. which if you are not in a 4g zone I would recommend simply for stability. The 3G our phones use is basically a layer between 3G and LTE as I've had it explained to me.. I really don't know much else about it though, sorry. I'm sure someone else here can shine more light on it however.
racingtiger03 said:
the 3G our phones use is not exactly the same as standard 3G unless you force your phone into EVDO 3G via the ##778 menu. which if you are not in a 4g zone I would recommend simply for stability. The 3G our phones use is basically a layer between 3G and LTE as I've had it explained to me.. I really don't know much else about it though, sorry. I'm sure someone else here can shine more light on it however.
Click to expand...
Click to collapse
oh that's really interesting. thanks for that little bit of info. had no idea.
Same problem with it dropping data signal and never coming back without restart. At least now i know its not a hardware issue
I've had the same problem lately
~John
damn.. i was actually hoping this was a small problem with a simple solution... everything else about the phone is perfect except for this one problem.
Having the same issue here....when switching to cdma I get no 3G just 1X.....hope they find a fix soon
Sent from my HTC Rezound
same here guys. call Verizon and let them know. I think it helps if a bunch of us make them aware.
I've had a ton of weird data issues with the Rezound. I get 1x where i should get 3g, i get 3g where i should get 4g and i get nothing way too often.
I've only had this happen once with the rezound. Shows nothing but bars, no data can be used. Sometimes switching to 3g or 4g in lte on/off helps.
Had this problem intermittently on both my wife's and my bolts, completely agree its just a lte being a new tech issue.
I've listened to a podcast on how the handoff works and its definitely not fool proof.
racingtiger03 said:
the 3G our phones use is not exactly the same as standard 3G unless you force your phone into EVDO 3G via the ##778 menu. which if you are not in a 4g zone I would recommend simply for stability. The 3G our phones use is basically a layer between 3G and LTE as I've had it explained to me.. I really don't know much else about it though, sorry. I'm sure someone else here can shine more light on it however.
Click to expand...
Click to collapse
Im in Lawton Oklahoma and I'm not gonna c 4G till 2013 and I'll be pcs before that.
Now I access the ##778 menu in edit mode and what do I do to force EVDO 3G?
Rocking and Loving My Unbelievable Crazy ReZound
Dial ##778#, call
edit mode
password is 000000
modem settings
Rev. A
select "enable"
menu > commit
phone will reboot and you should get 3G back
This changes your network from eHRPD back to EVDO Rev.A. For LTE phone owners, eHRPD causes 3G to die (most of the time anyway) when the LTE network has problems. Get back on normal EVDO and you're good to go.
^ from Jntdroid on another forum (not sure if we're allowed to post to other forums here) I'm not positive on where he got it from, but this is a capability of all HTC 4G phones
I've had occasional issues with being down to 1X, but even that was only during nationwide 4G network issues, definitely get in touch with VZW about that... not that they have enough sense to fix anything *sigh*
Data Connection slow to Acquire (3G/LTE)
If I'm on the subway, or somewhere with no service, then come above ground, I get voice (full bars) but no data -- it could take upwards of 3 minutes+ for data to come back up. Any thoughts?
I've been losing my 3G service throughout my city, being restricted to 1x so many times lately where I SHOULD be getting 3G!(4G isnt available in my area yet). It's really annoying...perhaps nexus isnt theeee only one...
^should I try calling and programing what the user implied? Again, I am not in a 4G area...
not2gutta said:
I've been losing my 3G service throughout my city, being restricted to 1x so many times lately where I SHOULD be getting 3G!(4G isnt available in my area yet). It's really annoying...perhaps nexus isnt theeee only one...
^should I try calling and programing what the user implied? Again, I am not in a 4G area...
Click to expand...
Click to collapse
Same issue as you. I live in a 3G area only and my 3G drops out a lot. Even a reboot doesn't get it back. Not sure what to do :/
I scanned this forum before creating this post and I'm pretty sure there isn't one already out there but please don't flame me if there is. I couldn't find any and I spent a good 30 minutes last night, trying to find something like this.
I purchased a used HTC Rezound recently but was unable to get 4G LTE to stay ON. I surfed various forums for a possible fix but couldn't find anything that I hadn't already tried.
This morning, I think I might have found a work-around. Here's what I did.
After activating the line and being able to get sporadic 4G LTE signal on the device, I went into the wifi settings on a hunch that maybe some unexplicable interaction was happening between wifi and the 4G radio. Wifi kept wanting to turn itself on and I kept fighting it by turning it off.
I located my home network and clicked 'forget network'. Once I did that, I went back to make sure wifi was OFF and that Mobile (data) was ON and WHAMMO!! Immediately, the 4G LTE indicator popped back on and I've been rocking 4G for about 2 hours now, without a single blip. I've watched an entire episode of 24 on Netflix in an area of my house where I've confirmed that I have a weak signal and still, no problems at all.
So my Question is this: Is there any other way to disable wifi without having to 'forget' the network when I want to use wifi? (Other than what might seem obvious by turning wifi OFF when I know that doesn't get rid of the 4G dropouts).
It's really only an inconvenience at this stage. All I'd have to do to connect is re-enter the password and since I don't use wifi when I'm at home because I have Unlimited Data, it's not really a big deal but it just seems that the OS on this phone was purposely designed in a way to take people OFF the 4G network when their phone is 'familiar' with a wifi system they're near.
======================== UPDATE ====================
There is no issue with the phone. The issue was an activation issue and I was able to eliminate the problem by trial and error. It turns out, the way I was able to get the device to connect had to do with re-seating the SIM. Once I did, the phone has been flawless in connectivity to both 4G LTE and wifi regardless of the combination of wifi settings. I hope this is useful to anyone reading the thread.
Is your Rezound stock or custom?
LTE will disable when WiFi is activated, most LTE phone does this by design. I have experienced where my Rezound's WiFi would want to turn on automatically on the clean rom, re-flashed and everything was good.
I personally never had issues with my Rezound. If fact, the Rezound has one of the best radios to date. The fact that HTC integrated the antenna into the battery case housing is what makes it a strong contender for receiving radio waves..
Sent from my iPhone 5
Go in advanced settings wifi settings (menu advanced settings)and disable the automatically turn on wifi setting. (Not exactly sure what its called as I hate sense and I'm not running it) but ull see it in advanced settings and then when u want to actually use wifi just enable wifi.
Problem solved
Sent from my ADR6425LVW using xda app-developers app
Well, I'm on stock ICS but rooted with S-OFF. The wifi, even when OFF kept wanting to turn ON by itself when I wanted it to stay on 4G. The only way I could get the phone to stay on 4G was to 'forget' my home network.
All is well now. Weird huh?
Sent from my rooted HTC Rezound with S-OFF using ICS on Verizon's periodically blazing fast and mostly reliable network
The Rezound has a poor shield on the 4g radio chip which causes interference in music. So, logically if stuff can get out, then wifi can come in and mess it up.
Dude read what I said and it will never automatically turn on again.
That's the reason it kept automatically turning it on. And if u haven't done what I said then regardless of you thinking its fixed it WILL turn on again by itself.
Nyobie said:
Well, I'm on stock ICS but rooted with S-OFF. The wifi, even when OFF kept wanting to turn ON by itself when I wanted it to stay on 4G. The only way I could get the phone to stay on 4G was to 'forget' my home network.
All is well now. Weird huh?
Sent from my rooted HTC Rezound with S-OFF using ICS on Verizon's periodically blazing fast and mostly reliable network
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Click to collapse
Sent from my ADR6425LVW using xda app-developers app
There's no such setting that I can find within the settings and I know which setting you're referring to. I saw it before on my Thunderbolt but for the life of me, I can't find it on the Rezound's menus. Anywhere. I looked several times. I'm pretty sure it's there. I just can't find it so the only way I could get the 4G to stay on and not have wifi automatically connect was to 'forget' the wifi network.
Sent from my HTC Incredible 4G on Verizon's periodically blazing fast and mostly reliable 4G LTE network using xda-developers app
Go in wifi settings then click the menu key then click advanced settings.
Nyobie said:
There's no such setting that I can find within the settings and I know which setting you're referring to. I saw it before on my Thunderbolt but for the life of me, I can't find it on the Rezound's menus. Anywhere. I looked several times. I'm pretty sure it's there. I just can't find it so the only way I could get the 4G to stay on and not have wifi automatically connect was to 'forget' the wifi network.
Sent from my HTC Incredible 4G on Verizon's periodically blazing fast and mostly reliable 4G LTE network using xda-developers app
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Click to collapse
Sent from my ADR6425LVW using xda app-developers app
Found the menu. Still haven't gotten used to the four lines at the bottom of the scrern being the menu.
Here it is. Which setting would it be? I wasn't launching any apps when the problem appeared where wifi kept eanting to turn on. I just powered up the phone and couldn't get 4G.
Sent from my rooted HTC Rezound with S-OFF using ICS on Verizon's periodically blazing fast and mostly reliable network
Its never auto turn on wifi but its checked so ur good. Ull never have that problem again.
Nyobie said:
Found the menu. Still haven't gotten used to the four lines at the bottom of the scrern being the menu.
Here it is. Which setting would it be? I wasn't launching any apps when the problem appeared where wifi kept eanting to turn on. I just powered up the phone and couldn't get 4G.
Sent from my rooted HTC Rezound with S-OFF using ICS on Verizon's periodically blazing fast and mostly reliable network
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Click to collapse
Sent from my ADR6425LVW using xda app-developers app
Thanks squidder!
Sent from my rooted HTC Rezound with S-OFF using ICS on Verizon's periodically blazing fast and mostly reliable network
Has anyone tried to use verizons' mobile hotspot with this yet? Every time I have tested it out it reduces the signal from 4G to 3G and never returns to 4G until I deactivate the hotspot. Anyone know if this is a design in the phone or maybe something I am doing wrong?
I'm new to verizon like as of two days ago and Ive been with sprint. Does verizon make you pay an extra fee to use the tethering service like sprint because i can turn on the hotspot and connect to it and its says its using 3G but i dont get any internet service to my tablet.
To keep things relevent:
SkitzoPhr3nia said:
Has anyone tried to use verizons' mobile hotspot with this yet? Every time I have tested it out it reduces the signal from 4G to 3G and never returns to 4G until I deactivate the hotspot. Anyone know if this is a design in the phone or maybe something I am doing wrong?
Click to expand...
Click to collapse
I couldnt tell you as i do not have 4G where i live, wish i did.
.torrented said:
I'm new to verizon like as of two days ago and Ive been with sprint. Does verizon make you pay an extra fee to use the tethering service like sprint because i can turn on the hotspot and connect to it and its says its using 3G but i dont get any internet service to my tablet.
Click to expand...
Click to collapse
The way I understand it is if you can access the service then it is part of your plan. Which is nice so you dont accidentally use it and get charged a boat load. I just moved to a share everything plan and was told by a rep that mobile hotspot comes included, which seems to be true since I am able to use is, even if only on 3G.
At the same time, I am able to use the mobile hotspot through a Rezound on the same plan with 4G all day long. That is why I am curious if it is the phone limiting my connectivity while using hotspot.
I am currently testing the mobile hotspot as I am writing you. I figured I would try it out since I've not used it as of yet on my new DNA. 4G is working and intact. No downgrade to 3G, and everything is speedy as expected. I would check your signal strength or other possible issues you may have with reception, as if I understand things correctly, a 4G connection will degrade to 3G in bad connection areas. Maybe your signal strength isn't acceptable? Just a thought. Maybe someone here has a better understanding of the underlying operations of what your particular issue could be. Good luck...
chadster1976 said:
I am currently testing the mobile hotspot as I am writing you. I figured I would try it out since I've not used it as of yet on my new DNA. 4G is working and intact. No downgrade to 3G, and everything is speedy as expected. I would check your signal strength or other possible issues you may have with reception, as if I understand things correctly, a 4G connection will degrade to 3G in bad connection areas. Maybe your signal strength isn't acceptable? Just a thought. Maybe someone here has a better understanding of the underlying operations of what your particular issue could be. Good luck...
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Click to collapse
I guess I figured out what my problem was. I just restarted my phone and tested again and it works perfectly. I dont know what its malfunction was but its all good now.
As some of you have probably read.
I gave up on the M9, mostly prompted by dropped calls, or calls going straight to voice mail.
I had the M9 replaced and gave it to my wife. It's been near perfect for her, she even dunked it and it's still running great.
My G4 is now doing the SAME thing. Although it has not dropped many calls, tons of calls go straight to voice mail.
Had a very important call this morning and even shutoff LTE, WIFI and Bluetooth and only had 3G on. And it went to voice mail.
The signal is not great, but should be fine for CDMA. Previous generation phones were fine (M8,M7, etc.)
I do see the signal bounce. Where it will be 3-4 bars one minute and none the next. The bouncing can be common in weak LTE (which is definitely weak).
But it's even bouncing with LTE off.
Even at home with two phones in the same location.
My wifes M9 will work, but my G4 will go to voice mail.
Where a couple months ago at home
My wifes M8 will work, but my M9 will go to voice mail.
Could their be something on the account that limits my phones? Like wrong bands or something. Not enabled for Spark but on a Spark Network.
As soon as Verizon gets the LG V10, I'm 99% sure I'm gonna switch. Don't know what else to do.
I don't really care for how locked down Verizon is, but I need a working phone.
This problem happens at multiple locations.
Any ideas appreciated.
I know this isn't specifically an M9 issue, but I know their are more experienced folks around here that might know something.
It is related to M9 TYPE phones though (Spark Generation 2-ish phones). It started when I switched from M8 to M9.
Upgrading my wife from M7 to M8 went fine and from M8 to M9 went fine.
Upgrading me from M8 to M9 went south and from M9 to G4 went south.
All SIM cards cam with respective phones.
All bought new.
All S-Off and/or rooted.
I may have found the answer. Read this !! It has to do with having WIFI on and phone going to sleep. Which is exactly what happens on G4 and M9.
https://community.koodomobile.com/k...ot-receiving-calls-on-android-5-1-1-with-wifi
mswlogo said:
I may have found the answer. Read this !! It has to do with having WIFI on and phone going to sleep. Which is exactly what happens on G4 and M9.
https://community.koodomobile.com/k...ot-receiving-calls-on-android-5-1-1-with-wifi
Click to expand...
Click to collapse
I disagree...I'm using the opposite settings that he is saying to use & I've never had this issue (that I know of). I don't make alot of outgoing calls...most are incoming...I also have my work cell fwd'd to my M9 so I don't have to carry 2 devices...I'm on Wifi a majority of the time, I get calls & texts all the time w/ no issues...the only thing I have checked in Advanced WiFi is Wifi Optimization, Keep Wifi on during sleep set to always
Fix
------
The fix is to not have Wifi on when the phone is idle/sleep. change your Wifi settings below to the screenshot below.
Settings -- > Wifi -- > MORE -- > Advanced -- > "Keep Wi-Fi on during Sleep = Never"
I also have "Network notification" and "Always allow scanning" enabled.
Click to expand...
Click to collapse
Sprint did (in my opinion) a very poor job with how it handles calls. One of my favorite phones was the evo LTE which not only could do LTE and a call at the same time but if you weren't in 4G it could do SV-DO and work on 3G which it actually worked very well. Especially at the time when I had that phone, I hardly had 4G anywhere so being able to use data at the same time on 3G was great.
That said, that feature didn't stick around long. The m7 had a separate radio for LTE & 1X meaning you could surf at the same time because it had separate radios. This couldn't do 3G which was a step backwards however 4G was becoming more mature.
Fast forward to today and with your modern tri-band device while it supports multiple bands that the previous phones didn't, most people have no idea what that means they usually assuming if it's a 4G phone well then it's just that how is any different.
I have had plenty of people complain to me about calls going straight to voicemail or signal issues. Rather than having separate radios, Sprint just uses CSFB Circuit Switched fallback so when a call comes in, it lets the phone know via LTE and immediately switches back to 1X to grab the call. That said it's by no means perfect especially in a bad signal LTE area can cause issues. When I'm at home or work I usually set my phone to CDMA only since I have wi-fi there is no advantage to be on LTE, causes issues with calls coming through and wastes battery. Most users have no idea about what is actually going on so it's hard to explain to a friend why when a caller calls them, the caller might here 5-6 rings before the phone even goes off. Sprint's LTE signal frankly sucks in most places I go, even right next to the tower sometimes you won't get full signal.
Anyway if your wifes phone works fine in the same spot as your G and you are doing all your testing off of LTE and still having issues that tells me either you have a bad radio again or something is provisioned wrong. I would put the phone back to stock, reset the radio and reactive the phone then do some testing with calls off LTE again. If you still have issues at the point, I would swap the phone. My M9 is pretty good with CSFB, I haven't had too many issues with it but really I think it's a very poor solution how it works especially when your in a fridge LTE area with the phone bouncing in and out of LTE.
Once the network goes all LTE (god knows how long that will take) I think this will be a thing of the past but for now CSFB now it's here to stay. I don't see Sprint ever going back to separate radios like the previous gen phones as they would more likely be focused on voice over LTE instead.
OMJ said:
I disagree...I'm using the opposite settings that he is saying to use & I've never had this issue (that I know of). I don't make alot of outgoing calls...most are incoming...I also have my work cell fwd'd to my M9 so I don't have to carry 2 devices...I'm on Wifi a majority of the time, I get calls & texts all the time w/ no issues...the only thing I have checked in Advanced WiFi is Wifi Optimization, Keep Wifi on during sleep set to always
Click to expand...
Click to collapse
It has not failed in 5 days since I flipped it.
It may depend on the WIFI it's on, IPV6 etc. I don't know.
I think this may have started the same time MMS started failing for SOME folks if WIFI was enabled. Disabling IPV6 on WIFI was a work around (which is disabled on your ROM).
But not everyone had this issue and depended on their router.
So their is weird sh$t happening due to Android changes.
I think this issue is related and not everyone runs into it.
I have had WIFI Calling setup, but disabled it on both M9 and G4 (because it's extremely unstable on every phone I've tried).
Not sure if that is part of it. Like my account knows it's WIFI Calling capable. But my wifes never had WIFI Calling setup, she also does not run WIFI at work. She's never had the problem (even with the same phone I had problems with).
Again I don't know the exact details, and this is not a fix. But disabling WIFI when asleep seems to have stopped it problem. But I need to go a bit longer to be 100% sure.
I've seen similar threads on many phones and carriers and many start off saying "Problem started with 5.x.x OTA update".
I think I was close when I thought it was the optimizer. And before I found that thread, I was testing with WIFI completely off (which also worked).
Something is a miss and there may be more "options" to cause the issue.
Sim-X said:
Sprint did (in my opinion) a very poor job with how it handles calls. One of my favorite phones was the evo LTE which not only could do LTE and a call at the same time but if you weren't in 4G it could do SV-DO and work on 3G which it actually worked very well. Especially at the time when I had that phone, I hardly had 4G anywhere so being able to use data at the same time on 3G was great.
That said, that feature didn't stick around long. The m7 had a separate radio for LTE & 1X meaning you could surf at the same time because it had separate radios. This couldn't do 3G which was a step backwards however 4G was becoming more mature.
Fast forward to today and with your modern tri-band device while it supports multiple bands that the previous phones didn't, most people have no idea what that means they usually assuming if it's a 4G phone well then it's just that how is any different.
I have had plenty of people complain to me about calls going straight to voicemail or signal issues. Rather than having separate radios, Sprint just uses CSFB Circuit Switched fallback so when a call comes in, it lets the phone know via LTE and immediately switches back to 1X to grab the call. That said it's by no means perfect especially in a bad signal LTE area can cause issues. When I'm at home or work I usually set my phone to CDMA only since I have wi-fi there is no advantage to be on LTE, causes issues with calls coming through and wastes battery. Most users have no idea about what is actually going on so it's hard to explain to a friend why when a caller calls them, the caller might here 5-6 rings before the phone even goes off. Sprint's LTE signal frankly sucks in most places I go, even right next to the tower sometimes you won't get full signal.
Anyway if your wifes phone works fine in the same spot as your G and you are doing all your testing off of LTE and still having issues that tells me either you have a bad radio again or something is provisioned wrong. I would put the phone back to stock, reset the radio and reactive the phone then do some testing with calls off LTE again. If you still have issues at the point, I would swap the phone. My M9 is pretty good with CSFB, I haven't had too many issues with it but really I think it's a very poor solution how it works especially when your in a fridge LTE area with the phone bouncing in and out of LTE.
Once the network goes all LTE (god knows how long that will take) I think this will be a thing of the past but for now CSFB now it's here to stay. I don't see Sprint ever going back to separate radios like the previous gen phones as they would more likely be focused on voice over LTE instead.
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thx for the info!
mswlogo said:
It has not failed in 5 days since I flipped it.
It may depend on the WIFI it's on, IPV6 etc. I don't know.
I think this may have started the same time MMS started failing for SOME folks if WIFI was enabled. Disabling IPV6 on WIFI was a work around (which is disabled on your ROM).
But not everyone had this issue and depended on their router.
So their is weird sh$t happening due to Android changes.
I think this issue is related and not everyone runs into it.
I have had WIFI Calling setup, but disabled it on both M9 and G4 (because it's extremely unstable on every phone I've tried).
Not sure if that is part of it. Like my account knows it's WIFI Calling capable. But my wifes never had WIFI Calling setup, she also does not run WIFI at work. She's never had the problem (even with the same phone I had problems with).
Again I don't know the exact details, and this is not a fix. But disabling WIFI when asleep seems to have stopped it problem. But I need to go a bit longer to be 100% sure.
I've seen similar threads on many phones and carriers and many start off saying "Problem started with 5.x.x OTA update".
I think I was close when I thought it was the optimizer. And before I found that thread, I was testing with WIFI completely off (which also worked).
Something is a miss and there may be more "options" to cause the issue.
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I'd blame gremlins yes, weird sh*t...and yeah, we still have ipv6 disabled in ROM for wifi
Sim-X said:
Sprint did (in my opinion) a very poor job with how it handles calls. One of my favorite phones was the evo LTE which not only could do LTE and a call at the same time but if you weren't in 4G it could do SV-DO and work on 3G which it actually worked very well. Especially at the time when I had that phone, I hardly had 4G anywhere so being able to use data at the same time on 3G was great.
That said, that feature didn't stick around long. The m7 had a separate radio for LTE & 1X meaning you could surf at the same time because it had separate radios. This couldn't do 3G which was a step backwards however 4G was becoming more mature.
Fast forward to today and with your modern tri-band device while it supports multiple bands that the previous phones didn't, most people have no idea what that means they usually assuming if it's a 4G phone well then it's just that how is any different.
I have had plenty of people complain to me about calls going straight to voicemail or signal issues. Rather than having separate radios, Sprint just uses CSFB Circuit Switched fallback so when a call comes in, it lets the phone know via LTE and immediately switches back to 1X to grab the call. That said it's by no means perfect especially in a bad signal LTE area can cause issues. When I'm at home or work I usually set my phone to CDMA only since I have wi-fi there is no advantage to be on LTE, causes issues with calls coming through and wastes battery. Most users have no idea about what is actually going on so it's hard to explain to a friend why when a caller calls them, the caller might here 5-6 rings before the phone even goes off. Sprint's LTE signal frankly sucks in most places I go, even right next to the tower sometimes you won't get full signal.
Anyway if your wifes phone works fine in the same spot as your G and you are doing all your testing off of LTE and still having issues that tells me either you have a bad radio again or something is provisioned wrong. I would put the phone back to stock, reset the radio and reactive the phone then do some testing with calls off LTE again. If you still have issues at the point, I would swap the phone. My M9 is pretty good with CSFB, I haven't had too many issues with it but really I think it's a very poor solution how it works especially when your in a fridge LTE area with the phone bouncing in and out of LTE.
Once the network goes all LTE (god knows how long that will take) I think this will be a thing of the past but for now CSFB now it's here to stay. I don't see Sprint ever going back to separate radios like the previous gen phones as they would more likely be focused on voice over LTE instead.
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I know about the call switching for LTE and it sucks. But that was not it. I tried CDMA only and it did not fix it.
Disabling WIFI while sleeping is still working. Not one call has gone to voice mail at work in over a week. It used to happen 2-3 times a day.
I HATE disabling wifi while asleep though. I'd like to still get to the bottom of it.
I think some how it is doing something over WIFI when a call comes in, if WIFI is available. But when the WIFI is in power save mode something gets messed up.
The problem started on OMJ's ROM with IPV6 disabled. So it's not that.
The only thing common is Lollipop, Sprint and my WIFI locations (and a modern single radio triband phone).
I'd like to try getting "WIFI Calling" capability off my account. I think once you set it up once, it's enabled automatically on my account.
I will also say, if I do enable WIFI Calling, it's terribly unreliable. Maybe that's a hint.
The WIFI signal is solid and no issues using WIFI itself.
mswlogo said:
I know about the call switching for LTE and it sucks. But that was not it. I tried CDMA only and it did not fix it.
Disabling WIFI while sleeping is still working. Not one call has gone to voice mail at work in over a week. It used to happen 2-3 times a day.
I HATE disabling wifi while asleep though. I'd like to still get to the bottom of it.
I think some how it is doing something over WIFI when a call comes in, if WIFI is available. But when the WIFI is in power save mode something gets messed up.
The problem started on OMJ's ROM with IPV6 disabled. So it's not that.
The only thing common is Lollipop, Sprint and my WIFI locations (and a modern single radio triband phone).
I'd like to try getting "WIFI Calling" capability off my account. I think once you set it up once, it's enabled automatically on my account.
I will also say, if I do enable WIFI Calling, it's terribly unreliable. Maybe that's a hint.
The WIFI signal is solid and no issues using WIFI itself.
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Having Wi-Fi calling provisioned on your account is just that, it just means if you enable wi-fi calling that your phone has the green light to connect and move forward with the server. That said if you keep wi-fi calling off the fact that it is still provisioned on the account doesn't affect anything at all if the service is not active.
If you only solution is disabling wi-fi while sleeping something in the rom is borked. Return the phone to 100% stock, hard reset it (including the radio) then try using it again. While again CSFB isn't perfect, if the phone is CDMA only you just shouldn't be having this kind of issue. If your not having issues with other phones in the same area with calls going to vm, you know it's not the network and something with the phone. If it does this on 100% stock after a re provision then you have a borked radio and the phone should be swapped. Which I have seen borked radios before, the wi-fi radio in the phone is totally separate from the CDMA/LTE radio.
Sim-X said:
Having Wi-Fi calling provisioned on your account is just that, it just means if you enable wi-fi calling that your phone has the green light to connect and move forward with the server. That said if you keep wi-fi calling off the fact that it is still provisioned on the account doesn't affect anything at all if the service is not active.
If you only solution is disabling wi-fi while sleeping something in the rom is borked. Return the phone to 100% stock, hard reset it (including the radio) then try using it again. While again CSFB isn't perfect, if the phone is CDMA only you just shouldn't be having this kind of issue. If your not having issues with other phones in the same area with calls going to vm, you know it's not the network and something with the phone. If it does this on 100% stock after a re provision then you have a borked radio and the phone should be swapped. Which I have seen borked radios before, the wi-fi radio in the phone is totally separate from the CDMA/LTE radio.
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Did that, returned to stock, same issue. Got Another M9, same issue, got a LG G4 same issue. Just signed up for T-Mobile (have not canceled Sprint yet). Two LG V10's. T-Mobile just announced a huge expansion on their network to cover areas that I needed with LTE (Sprint roams 1x Lakes Region and North in NH).
mswlogo said:
Did that, returned to stock, same issue. Got Another M9, same issue, got a LG G4 same issue. Just signed up for T-Mobile (have not canceled Sprint yet). Two LG V10's. T-Mobile just announced a huge expansion on their network to cover areas that I needed with LTE (Sprint roams 1x Lakes Region and North in NH).
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Not a bad play, Sprint's Network has come along way in the past few years but with CSFB and a crappy LTE signal is most places they still have a lot of work to do. One of the reasons I stay is my plan and they are pretty friendly towards rooting/unlocking for the most part.
Sim-X said:
Not a bad play, Sprint's Network has come along way in the past few years but with CSFB and a crappy LTE signal is most places they still have a lot of work to do. One of the reasons I stay is my plan and they are pretty friendly towards rooting/unlocking for the most part.
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The V10 was awesome. T-Mobile was extremely good at My work, My wifes work, Home and all places between. Speeds were 4-8x faster (seriously) than Sprint. Simultaneous Voice and Data VoLTE.
But what the map showed up in NH, didn't match reality at all. Sprint is pretty dismal too, but they at least Roam and you can get 1x or 3G from either US Cellar or Verizon.
But T-Mobile had nothing in the areas Sprints Roams. So I'm sticking with Sprint for now.
I've concluded it's a combination of weak locations, the requirement to switch from LTE to CDMA for calls, and something around that is complicated by WIFI while asleep. Shutting off WIFI or shutting it off while asleep definitely improved things but didn't eliminate it completely. Both phones (M9 and G4) are Qualcomm chips and probably have similar Radio Firmware. But it's overly complicated due to Sprint being a bit behind the ball with VoLTE.
I agree Sprint is not quite so tight on locking things down. T-Mobile is the least locked down, then Sprint, then AT&T then Verizon. I know Verizon would perform flawlessly. But the combination of expense and being so locked down keeps me away. T-Mobile price was really good 2 lines 10GB each, with Carry Over and free Music/Video streaming. And the V10 already had TWRP on day one. The G4 on Sprint does not have TWRP and probably never will. It is rootable, barely.
I convinced my Sister to switch to T-Mobile because she wanted an iPhone and I recommended she not Jail Break it. But she wanted Tether (I was rooting Androids on Sprint for her). She is very happy with T-Mobile. And she generally stays in Eastern MA.
We'll see what HTC does this next time around. But they really need to step up their game. The reception issue really isn't an "HTC" issue. It's a Qualcomm/Sprint issue in my opinion. It's a kludge and I think Sprint is the only one with this kludge.