Using CM9 Unofficial,
when I'm making a call, as soon as the call goes out my 4g indicator drops down to HSPA, and then 3g. During the call, the indicator switches frantically between H and 3g...and after the call, it takes several minutes to go back up to LTE.
Is this normal? Maybe i just never paid attention to the signal indicator shortly before and after a call...or maybe the stock ROMs just don't show the drop and then the pickup of the 4g LTE signal.
I'm aware that there's no VoLTE yet, but i also didn't know that the phone completely dropped--and then had to reinitiate the LTE signal just because of a phone call.
Data works while the call is in-session.
Jamesyboy said:
Using CM9 Unofficial,
when I'm making a call, as soon as the call goes out my 4g indicator drops down to HSPA, and then 3g. During the call, the indicator switches frantically between H and 3g...and after the call, it takes several minutes to go back up to LTE.
Is this normal? Maybe i just never paid attention to the signal indicator shortly before and after a call...or maybe the stock ROMs just don't show the drop and then the pickup of the 4g LTE signal.
I'm aware that there's no VoLTE yet, but i also didn't know that the phone completely dropped--and then had to reinitiate the LTE signal just because of a phone call.
Data works while the call is in-session.
Click to expand...
Click to collapse
Yeah even on the stock firmware whenever you start a phone call LTE is dropped. I remember this because I have bad 3g coverage in my area but LTE is great (I know Backwards) but whenever i get on the phone I have 2-3 Bars but browsing the internet while off the phone on LTE I easily get 5 bars. You must have missed it because on the stock it goes from 4G lte to just 4G.
AT&T doesn't have Voice over LTE yet. Perhaps the indicator is showing you the information that would be most important while you are making a call (3G/HSPA+ reception).
This is only a guess of course.
Daman09 said:
AT&T doesn't have Voice over LTE yet. Perhaps the indicator is showing you the information that would be most important while you are making a call (3G/HSPA+ reception).
This is only a guess of course.
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Click to collapse
This is sort of my point...and the issue, =(. Mah brain says that there shouldn't be an issue keeping up a LTE connection because it's not being used for voice. I could sorta understand if the phone wanted to prioritize the use of LTE if it wanted it for voice. But why should it drop it during a call.
Jamesyboy said:
This is sort of my point...and the issue, =(. Mah brain says that there shouldn't be an issue keeping up a LTE connection because it's not being used for voice. I could sorta understand if the phone wanted to prioritize the use of LTE if it wanted it for voice. But why should it drop it during a call.
Click to expand...
Click to collapse
My understanding is that the icon is the type of connection that the phone has with the nearest cell tower. Therefore since there isn't any VOLTE (Voice Over LTE) it needs to drop the LTE connection and connect with the same cell tower but without LTE (or nearby cell tower if LTE and HSPA+ use different ones) in order to make a phone call so it will lose LTE while the call is in progress. I'm thinking this is because the phone will only use one connection at a time so it would have to stop using LTE in order to use 3G or HSPA+ or whatever.
blitzer320 said:
My understanding is that the icon is the type of connection that the phone has with the nearest cell tower. Therefore since there isn't any VOLTE (Voice Over LTE) it needs to drop the LTE connection and connect with the same cell tower but without LTE (or nearby cell tower if LTE and HSPA+ use different ones) in order to make a phone call so it will lose LTE while the call is in progress. I'm thinking this is because the phone will only use one connection at a time so it would have to stop using LTE in order to use 3G or HSPA+ or whatever.
Click to expand...
Click to collapse
Ah. Mah brainz don't hurts az much as it yoost too.
Yup. Correct. During a phone call, your phone will be on 3G/H+, LTE will be dropped. Its the Network, NOT the phone.
-Once you go NOTE, you'd say 4 inches a Joke
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
Click to expand...
Click to collapse
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.
Click to expand...
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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Click to collapse
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
Click to expand...
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
Click to expand...
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.
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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?
Click to expand...
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.
Click to expand...
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
Click to expand...
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 :/
Ever since I've transferred to AT&T I've had laggy data issues. I finally rooted/flashed to AOKP, and while trying to address the issues of no APNs appearing or saving and no signal status in the status bar, I've come to find both AT&T and T-Mobile as Available Networks under some network setting. Am I chasing ghosts here, or is there something actually up?
EDIT: So I really need help troubleshooting the issue. I'll logcat, dump, or whatever necessary. I've been in many cities/areas and this problem persists: if I haven't used data or the phone hasn't been backgrounding traffic, it'll take anywhere from 5 to 30 seconds before a connection is made when I try to access an internet-related function on my phone (even though 3G/H is displayed in the status bar). Out of shear frustration (this has been happening since I got the phone, under stock ROMs and now under AOKP), I tried messing with *#*#info#*#*. I changed WCDMA-preferred to WCDMA-only -- no improvement. Oddly, I also tried GSM-only. Well, great improvement! Even though I only have E, there is absolutely no latency in waiting for a connection -- so pages and other data end up loading faster on Edge than 3G !
I have absolutely no idea why my phone takes forever to make a connection. Under 3G, I see only but a few upstream network activity blips (even under full bars) for as much as 30 seconds, before there is any downstream activity (and when it comes, it comes). Can anyone help???
P.S.: I'm going to try using a friend's SIM later for comparison.
joebobjoe said:
Ever since I've transferred to AT&T I've had laggy data issues. I finally rooted/flashed to AOKP, and while trying to address the issues of no APNs appearing or saving and no signal status in the status bar, I've come to find both AT&T and T-Mobile as Available Networks under some network setting. Am I chasing ghosts here, or is there something actually up?
Click to expand...
Click to collapse
Because they both share the 1900MHz band I believe.
Red5 said:
Because they both share the 1900MHz band I believe.
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Click to collapse
I'd like to know if it shows up for anyone else?
joebobjoe said:
I'd like to know if it shows up for anyone else?
Click to expand...
Click to collapse
On AOKP it does for me too. Just ignore it.
Red5 said:
On AOKP it does for me too. Just ignore it.
Click to expand...
Click to collapse
An aside: does your phone stay on 3G and switch to H only under moderate network traffic?
joebobjoe said:
An aside: does your phone stay on 3G and switch to H only under moderate network traffic?
Click to expand...
Click to collapse
The phone displays 3G because thats what it is... then when data is being processed, it shows H because its using the "what AT&T calls 4G but its really HSPA" side of the network. For just standby time with no data, its going to show 3G because HSDPA is traffic, not standby.
Red5 said:
The phone displays 3G because thats what it is... then when data is being processed, it shows H because its using the "what AT&T calls 4G but its really HSPA" side of the network. For just standby time with no data, its going to show 3G because HSDPA is traffic, not standby.
Click to expand...
Click to collapse
Well that's strange. I'm used to phones displaying what network-level they are capable of. So why would it not just display H for HSPA+ when HSPA+ service is available, instead of only displaying under traffic.
I'm going to go ahead an edit this thread to help troubleshoot what I think to be the main issue.
After some trials I see that the network indicator switches back and forth between 3G and H a few tines before making the connection and transmitting data. Hmmm...
Basically, "4G" will eat your battery alive so the phone idles at 3G and jumps to H+ only when you use data. If you were on a "stock" ATT rom it would always read H+, but this is technically false since when its idle the phone sits in 3G. CM9 and AOKP accurately display it which is why you see the switch.
Sent from my SGH-I777 using Tapatalk
I have a HTC Amaze for a phone and the Galaxy S2 is my media player. Sometimes, when I don't feel like carrying around two devices, I put my T-Mobile SIM in the galaxy and use it as my phone. I must say, Edge is not as slow as I remember it being. Maybe speed is contingent on network traffic. If thats the case, instead of using crowded "faux G" networks, I may defer to Edge to save battery life and get good dl/ul rates.
My phone does the same thing. I noticed it sometime ago. When idle 3g. Internet I get H+. This is with both Shostock2 and Phone Bricker. I was curious to know too but just blew it off because it really doesnt make any difference to me as long as Im getting decent speeds. Im not even with ATT anymore. Went with Straight Talk. Which uses ATT towers. Cant beat the price!!
They don't have the correct apns, but that symbol problem is because the phone doesn't use hspa+ passively, only actively. It causes some lag when downloading, but it is faster fit large data. But your problem is due to a supposed imei range with bad modems. Rehash stick, fix the triangle, and return it.
Sent from my GT-I777 using xda premium
When I listen to internet radio for a long period of time my phone goes into a 1x connection. I have to reboot to get it back to 3g. is there a hack on the phone I can do to stop this from happening like a ip refresher or something. it stuck on 1x until I reset the phone. I believe this is sprint doing this on purpose. even though they advertise they dont do this. I use only around 2 gb of data a month.
any help would be nice. I don't want to have to restart my phone every 2 hours when I feal like streaming online music at work
highly doubtful they do that. cause i've been on 3g streaming for hours on end and dont get throttled. Are you in a bad signal area?
no full bars its possible It could be my phone or I am new to sprint and may not have the same limitaions most people have.
Here in hawaii,I usually get 300-1mbps on 3g. However, at home where my signal is 3-4 bars has horrible speeds,and I also notice the same problem. About 5-10mb and the 1x icon shows up.
Honestly I think its a tower issue.
Does it go into 1x on any tower while streaming?
Sent from my EVO using xda premium
The bars on your phone have nothing to do with data signal strength. The bars are for voice signal only.
cruise350 said:
The bars on your phone have nothing to do with data signal strength. The bars are for voice signal only.
Click to expand...
Click to collapse
This is correct.
Sent from my EVO using xda app-developers app
cruise350 said:
The bars on your phone have nothing to do with data signal strength. The bars are for voice signal only.
Click to expand...
Click to collapse
How do we find data signal strength? Or do you mean the bars stand for signal strength and not signal speed?
Sent from my EVO using xda premium
It's a big annoying, but you have to go into the dialer, dial ##DEBUG#, go into EVDO Engineering (for 3G, since 1X is your voice and LTE is your LTE) and read the Rx Power. It should be different from your 1X Rx Power and your LTE Rx Power (if you have LTE).
I looked for a data signal meter widget a while back and never found one that worked or pulled from the right info (usually people just pulled from the Settings->About->Network->Signal Strength info, which is 1X (Voice).
Here some more info: http://s4gru.com/index.php?/topic/2...to-determine-your-actual-lte-signal-strength/
cgrimm9 said:
When I listen to internet radio for a long period of time my phone goes into a 1x connection. I have to reboot to get it back to 3g. is there a hack on the phone I can do to stop this from happening like a ip refresher or something. it stuck on 1x until I reset the phone. I believe this is sprint doing this on purpose. even though they advertise they dont do this. I use only around 2 gb of data a month.
any help would be nice. I don't want to have to restart my phone every 2 hours when I feal like streaming online music at work
Click to expand...
Click to collapse
I can say with a known certainty that Sprint does not "throttle" or "cap" data usage on a mobile device. Only the top < 1% of abusers are contacted by sprint, which is usually a letter of intent to cancel service if data abuse continues, or a notice of cancellation. No "throttling" or "capping"
I just find it odd that my phone randomly goes from 3g speed to 1g only after multible hours of use and there was no movement from the phone where I never had a issue.I can go days or weeks without going to 1g when its on 1g I have to restart the phone it will not go back into 3g mode.
cgrimm9 said:
I just find it odd that my phone randomly goes from 3g speed to 1g only after multible hours of use and there was no movement from the phone where I never had a issue.I can go days or weeks without going to 1g when its on 1g I have to restart the phone it will not go back into 3g mode.
Click to expand...
Click to collapse
You could just toggle airplane mode
Sent from my EVO using Tapatalk 2
So I got my Z2 and am loving it so far. No problems that really take away the experience of using this amazing phone. However, does anybody else notice that the phone switches from LTE 4G to H+ during a phone call? The switch happens instantaneously and it's hardly noticeable unless you're looking at the screen. Whenever I am on a call, my phone switches to H+ rather than staying on 4G. I only noticed because I tether my laptop and the speed on my laptop suddenly dropped during calls.
Because you cannot normally make a call on any LTE network. LTE is currently for data only. There any only few operators in the world that offer Voice Over LTE (making phone call on LTE network).
romeokk said:
Because you cannot normally make a call on any LTE network. LTE is currently for data only. There any only few operators in the world that offer Voice Over LTE (making phone call on LTE network).
Click to expand...
Click to collapse
Ah I see, thanks for clearing it up! I've never noticed this on my LTE-enabled Nexus 4 so I thought this might have been specific to the Xperia Z2 only. Thanks for the clarification
I have a TMO Nexus 6 and it does the same exact thing. But in my case, I was told to switch off VoLTE because whatever my carrier is doing with their towers is messing everything up. So now I'm stuck with getting random/jumbled texts all the time. Oh, and sometimes my phone doesn't ring so ppl think I'm ignoring them - hella sketch, but what're you gonna do.. We both have great peices of fine hardware in our hands, let's just be thankful we can play angry birds in ultra fiiiine HD ??