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: Hi guys, I have been having this issue with my dash, most of the time its saying "searching" and I cannot get any signal, I have flashed different ROMS and none of them seem to be solving the problem, sometimes it switches to "phone off" by itself, and then it continues between 2 bars of signal and "searching" and I know its not the service because when I switch to my RAZR it works just fine, any suggestions please?
gadget_lover said:
: Hi guys, I have been having this issue with my dash, most of the time its saying "searching" and I cannot get any signal, I have flashed different ROMS and none of them seem to be solving the problem, sometimes it switches to "phone off" by itself, and then it continues between 2 bars of signal and "searching" and I know its not the service because when I switch to my RAZR it works just fine, any suggestions please?
Click to expand...
Click to collapse
try doing a hard reset
I have done it, still the same
gadget_lover said:
I have done it, still the same
Click to expand...
Click to collapse
This may or may not help, but to eliminate all variables I would suggest trying a new sim card just for kicks. I know that it works in your RAZR, but the smart phones are a little touchier with older version sims; especially if there are any divits, scratches, or obviously any build up on them. The latest TMO Series 3 sims look like a globe (the gold contact area).
I can't tell from your sig what country you are in or what provider you have, but if you are with TMO US they will swap it out for free at any corporate store; at least ours does. Besides it never hurts to have the newest version anyways.
also if you're on tmo, you can check on their site the coverage area, and see if you're on a bad part of their network.
I'm using T-Mobile HTC Touch Pro 2 on AT&T network and cant receive calls when I'm on data network (read browsing, facebook app, slacker radio app).
I'm on AT&T EDGE. Is there anything that can be done to avoid this? Thanks.
blueguy19 said:
I'm using T-Mobile HTC Touch Pro 2 on AT&T network and cant receive calls when I'm on data network (read browsing, facebook app, slacker radio app).
I'm on AT&T EDGE. Is there anything that can be done to avoid this? Thanks.
Click to expand...
Click to collapse
The problem is that when you're using your T-mobile phone on the AT&T network, your data connection is through EDGE, not 3G...and one of the drawbacks to EDGE is that you can't have an active data connection at the same time as an active phone call.
It's a hardware restriction, caused by the different 3G bands AT&T and T-mobile use. Your only real solution would be to get an AT&T-branded phone so you can use their 3G bands, or start using t-mobile's network with your TP2 so you can use their 3G.
sirphunkee said:
The problem is that when you're using your T-mobile phone on the AT&T network, your data connection is through EDGE, not 3G...and one of the drawbacks to EDGE is that you can't have an active data connection at the same time as an active phone call.
It's a hardware restriction, caused by the different 3G bands AT&T and T-mobile use. Your only real solution would be to get an AT&T-branded phone so you can use their 3G bands, or start using t-mobile's network with your TP2 so you can use their 3G.
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Click to collapse
Agreed that you can't do both at the same time, but it sounds like the phone should still automatically suspend the data session to take the phone call. Sounds like an application is forcing the data connection to stay active, what programs do you have installed?
Toleraen said:
Agreed that you can't do both at the same time, but it sounds like the phone should still automatically suspend the data session to take the phone call. Sounds like an application is forcing the data connection to stay active, what programs do you have installed?
Click to expand...
Click to collapse
I think it would be nice if it worked that way....but that's not how it's been for me. Maybe there's a registry setting that makes it one way or the other, but on the custom roms I've used it doesn't work the "nice" way. Calls go to voice mail if I'm actively accessing/transferring data (on an EDGE connection).
Are you saying that your TP2 actually does suspend the data session -- from personal experience? Or just that it should be that way?
MCbrian said:
I think it would be nice if it worked that way....but that's not how it's been for me. Maybe there's a registry setting that makes it one way or the other, but on the custom roms I've used it doesn't work the "nice" way. Calls go to voice mail if I'm actively accessing/transferring data (on an EDGE connection).
Are you saying that your TP2 actually does suspend the data session -- from personal experience? Or just that it should be that way?
Click to expand...
Click to collapse
I can't say for sure on my TP2 as I've generally got 3G coverage everywhere I go. When I was using my 8525 I specifically remember being impressed the first time I was in the middle of a download and it recovered after taking a phone call, was definitely a custom ROM too. Probably was WinMo 6.0 at that time though.
When you are using data and recieve a call it should stop data and allow the call to go thru when you are using EDGE. Since you are using a none AT&T device they probably wont fix the issue unless you reproduce the issue with an AT&T device. Also i tested this on my TMO TP2 by loading a website and making a call to my TP2 at the same time and it stopped my data as the call came thru then when i ignored the call it continued to load the website.
Sik96teG said:
When you are using data and recieve a call it should stop data and allow the call to go thru when you are using EDGE. Since you are using a none AT&T device they probably wont fix the issue unless you reproduce the issue with an AT&T device. Also i tested this on my TMO TP2 by loading a website and making a call to my TP2 at the same time and it stopped my data as the call came thru then when i ignored the call it continued to load the website.
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Click to collapse
It may depend on other factors then -- like maybe what rom you're running. After I posted above I tested this again -- to confirm what I posted, by starting the download of a very large file. I then called my phone from a landline and sure-enough the call went to VM after a few rings. So, maybe just a characteristic of my ROM, but it's definitely true for me on T-Mo USA (on EDGE). When I stopped the download my phone received calls just fine, so it's not a general receiving-calls issue.
Tomorrow when I'm at work -- and have a full-strength 3G connection -- I'll try it again to confirm that it does receive during 3G data. I've done that test before -- I've received calls with my laptop tethered to the TP2 on 3G and kept the data connection and received the call, but I haven't tried with the rom I'm currently running.
Sik96teG said:
When you are using data and recieve a call it should stop data and allow the call to go thru when you are using EDGE. Since you are using a none AT&T device they probably wont fix the issue unless you reproduce the issue with an AT&T device. Also i tested this on my TMO TP2 by loading a website and making a call to my TP2 at the same time and it stopped my data as the call came thru then when i ignored the call it continued to load the website.
Click to expand...
Click to collapse
I experienced the same thing with my EDGE-only Wizard (8125) on AT&T...incoming calls would be routed straight to voicemail if I had an active data connection going. And, whenever I would try to make an outgoing call, I would get an error message telling me that I couldn't make the call until I closed the data connection.
We all agree that EDGE can't multi-task like that, so to speak...but I think the issue of prioritizing or not prioritizing voice over data is handled at the device level, and/or by carrier control, rather than as a function of what the network can/can't do. My guess at this point is that there might be a reg setting that controls giving calls default priority at all times, but I have no idea what/where it is
sirphunkee said:
but I think the issue of prioritizing or not prioritizing voice over data is handled at the device level, and/or by carrier control, rather than as a function of what the network can/can't do. My guess at this point is that there might be a reg setting that controls giving calls default priority at all times, but I have no idea what/where it is
Click to expand...
Click to collapse
Yeah, that's what I was thinking....well, guessing really -- I don't know. But I know what my experiment showed. A registry setting could explain why it would work for some and not others. Or could a different radio-rom possibly make a difference?
I have no idea.
MCbrian said:
Yeah, that's what I was thinking....well, guessing really -- I don't know. But I know what my experiment showed. A registry setting could explain why it would work for some and not others. Or could a different radio-rom possibly make a difference?
I have no idea.
Click to expand...
Click to collapse
Now that you mention it, my money is on the radio (don't know why I didn't think of that).
blueguy, what radio are you using? And for that matter, what ROM? ATT, Tmo, or...? I'll test it on mine just like MCbrian did, since I have a different radio (.14), once I recall how to force my toy into EDGE-only mode. so, tomorrow morning
EDIT: sik96teg, same question to you...what radio/ROM are you using?
right now im on 4.49.25.57(i believe this is the stock tmo 6.5) radio and i have tried a few other radios over the last few monthes(never really tested them but dont recall this issue). i use to be on an energy rom and now im on leo cell evo rom. Also when i did have this issue a long time ago i called tmobile and they stated at the time it was a known issue and it was suppose to be resolved in a few days and a few days later it started to work. I also made about 10 calls and only one of them didnt come thru to the phone. My home phone rang for about 30 secs then went to vm but no indicator on the device but that only occured 1 out of 10 tries.
MCbrian said:
Tomorrow when I'm at work -- and have a full-strength 3G connection -- I'll try it again to confirm that it does receive during 3G data. I've done that test before -- I've received calls with my laptop tethered to the TP2 on 3G and kept the data connection and received the call, but I haven't tried with the rom I'm currently running.
Click to expand...
Click to collapse
Just confirming what I thought: On a 3G data connection, data-transfer continues and the voice call is received simultaneously, as it should.
Thanks for your inputs and my answers
I'm using Tmobile ROM which upgraded me from WinMo 6.1 to WinMo 6.5. I'm not sure what was the radio on it. But I flashed it with Hard-SPL and then with 4.49.25.88 Radio.
Even then the issue still persists
I read somewhere it happens due to NOM1 and NOM2 kind of EDGE network. NOM1 has capabilities to suspend data connection and give preference to phone call, NOM2 doesnt support this behavior. It seems AT&T is using NOM2 in my area. I'm not sure though if this is causing the issue that I'm experiencing.
I called AT&T Technical Support and they said they see my phone as Unkown device and can' support it.
Please this is really annoying, any help is appreciated.
Same here, I am currently with the new official (ok better leaked) ROM and the Radio that was provided (the latest).
The point is that when I am on 3G i can receive both data and calls which is obvious. Now after reading this thread I noticed that when I am on standard GSM and someone calls me, they get notified that my phone is switched off.
What is weird is the fact that there should have been an option to state Call over Data or the opposite for that matter. I think my old Nokia N95 had a similar option.
So, yeah, is that a bug or a feature?
i'm just guessing...but, I believe the simultaneous data/call is a function of 3G .....EDGE is the bare-bones basic thing....
at least that's how they make it sound in the commercials
....i should have read the replies in the thread...
stormrain said:
when I am on standard GSM and someone calls me, they get notified that my phone is switched off.
What is weird is the fact that there should have been an option to state Call over Data or the opposite for that matter. I think my old Nokia N95 had a similar option.
QUOTE]
When I tested this (on EDGE) by calling my TP2 from landline it went to voicemail. Another time I was on EDGE and someone tried to call me and they had your experience: "Out of area/unreachable". And this was within 24 hours, on the same rom without changing any setting (at least, not on purpose).
I've never seen an option to set data/voice priority.
Click to expand...
Click to collapse
I flashed Energy ROM with .88 radio, it did improve download speed. But still don't receive calls while using data.
Is there any other ROM which allows this?
The Rhodium isn't capable of simultaneous data and voice.
You should have a GPRS Class A phone, but that should have 2 antennas. (See link)
So only one of them is active, data OR voice.
But normally it should pause the data connections and give priority to the voice connection.
ronh said:
The Rhodium isn't capable of simultaneous data and voice.
You should have a GPRS Class A phone, but that should have 2 antennas. (See link)
So only one of them is active, data OR voice.
But normally it should pause the data connections and give priority to the voice connection.
Click to expand...
Click to collapse
I believe it IS capable, if you are on 3G data. Not if you are EDGE / GPRS.
ronh said:
The Rhodium isn't capable of simultaneous data and voice.
You should have a GPRS Class A phone, but that should have 2 antennas. (See link)
So only one of them is active, data OR voice.
But normally it should pause the data connections and give priority to the voice connection.
Click to expand...
Click to collapse
stevedebi said:
I believe it IS capable, if you are on 3G data. Not if you are EDGE / GPRS.
Click to expand...
Click to collapse
Yes -- it absolutely is, as stevedebi states, on 3G. So the limitation on EDGE isn't the phone, really, it's the nature of EDGE/GPRS.
Hey all, I'm more of a search and learn user than a poster, but I have yet to find an answer by searching alone, so here goes.
My EVO tends to dip in and out of signal on a regular basis, but more often then not when I'm driving. For example, the phone will go from having 5 bars, to none, then back to 5 in a matter of seconds (id say about a minute). It did this 4 times on the way home from work today. I just came from T-Mobile, and I cant recall this ever happening on their GSM network. Is this a phone issue, or a typical behavior of Sprint and or CDMA networks?
Thanks!
aenima4six2 said:
Hey all, I'm more of a search and learn user than a poster, but I have yet to find an answer by searching alone, so here goes.
My EVO tends to dip in and out of signal on a regular basis, but more often then not when I'm driving. For example, the phone will go from having 5 bars, to none, then back to 5 in a matter of seconds (id say about a minute). It did this 4 times on the way home from work today. I just came from T-Mobile, and I cant recall this ever happening on their GSM network. Is this a phone issue, or a typical behavior of Sprint and or CDMA networks?
Thanks!
Click to expand...
Click to collapse
mine does this also...and i came from tmobile too, i dont think its relaly losing service... b/c if u lose service there will be an X next to the bars...i think it might just be switching towers and not doing it smoothly... b/c whenever it dips i try to make calls to make sure i still got service and what do you know it always works :/
also sometimes i notice it dips to 1 bar then back up in a matter of seconds... any idea anyone?
Yeah I agree that I still have voice service, however my data does completely stop. Its a pain cause all my background downloads get interrupted and often broken.
aenima4six2 said:
Hey all, I'm more of a search and learn user than a poster, but I have yet to find an answer by searching alone, so here goes.
My EVO tends to dip in and out of signal on a regular basis, but more often then not when I'm driving. For example, the phone will go from having 5 bars, to none, then back to 5 in a matter of seconds (id say about a minute). It did this 4 times on the way home from work today. I just came from T-Mobile, and I cant recall this ever happening on their GSM network. Is this a phone issue, or a typical behavior of Sprint and or CDMA networks?
Thanks!
Click to expand...
Click to collapse
I noticed it on occasion on AT&T but that could be because of their ****ty 3G network here.
I have noticed it on Sprint too. I never completely drop service, but I do frequently drop from 5-6 bars of EvDo down to 1-2 bars of 1xRTT then it jumps right back up. It seems to only happen when I'm driving fast
aenima4six2 said:
Yeah I agree that I still have voice service, however my data does completely stop. Its a pain cause all my background downloads get interrupted and often broken.
Click to expand...
Click to collapse
hmm not sure... i also do notice i get error codes when sending txt's sometimes... like error 107 or 97 and i think 32 before... but it hasnt occured recently... its mainly when i send txts back to back super fast... or if im sending one when someone is sending me one...
so i dunno if the port from tmobile is just bad? or what...
forgot to mention 2 of my friends evo's do the same thing... they live near me... and well it does it but i dont think as often as mine... not sure... but it seems liek all evos do it... maybe just bad service area?
I definitely don't get error codes, but the service going in and
out is really annoying. So annoying, that i may drop Sprint and return my evo.
hmm then i dunno i would call and ask, i think sprint jsut has spotty service for you, have u check the tws?
(time without service percentages)?
and did u do the cmda auto prl? after i do that it helps ALOT
How do you check the TWS? Also, by auto PRL, you are referring to the "Update PRL" feature in Software Update right?
aenima4six2 said:
How do you check the TWS? Also, by auto PRL, you are referring to the "Update PRL" feature in Software Update right?
Click to expand...
Click to collapse
go to settings and battery and batterystatus and check cell standby, then the prl thing is to set it so its CMDA and not GSM setting...
its not the update PRL there is a thread about it
http://forum.xda-developers.com/showthread.php?t=717785
"If your phone is afflicted with TWS > 0, try this procedure.
1) In dialer, dial *#*#4636#*#* to enter "Testing" app.
2) Under Phone Information, set Set preferred network type to CDMA only.
3) Exit Testing by pressing "back" key.
4) Enter Testing again.
5) Set network to CDMA auto (PRL).
6) Exit Testing again.
This fixed my TWS, and the settings stick on reboot."
btw u MIGHT have to do this everytime after reboot
Done.. I appreciate the advice. We'll see if it works. I wonder if you can use the "Network" app to do this... Also, I applied the verizon PRL hack and it worked.. However, I'm just afraid to use it before I test if it charges roaming.
Also, TWS is 3%
evo has NO roaming charges on the plans... whatsoever...
hmm your tws is low... i dont see why your signal just drops like that... mine isnt as much as you if your saying yours does it allt he time... but mine does it and it hasnt bothered me...
werd... my phone just now did the no connection to 3g... anyone else figuire out what this was?
Been having some issues with callers not hearing me. I tried swapping out the modems (can't remember exactly which ones but can figure it out if necessary), tried different kernels (while I was on TeamSonic rom), and switched from Sonic to FrostyJB and still happening.
I am on wifi calling at my home (crappy signal). It happened on all calls this morning. I made all the above saps and changes this morning as well. I tried a call when I left and was outside of wifi and call worked fine.
This sound like a defect or setting thing? Don't see a lot of settings in the Wifi Calling menu.
Thanks!
There are a few things that could be the problem. You need to determine if it is the phone or the wifi.
What kind of signal are you getting? Are you able to test your wifi for internet? Is this all of a sudden, meaning were you able to use wifi calling without problems prior to this recent problem?
I always had problems with wifi calling so I never use it on my HTC one s and this one too
Sent from my SGH-T999 using Tapatalk 2
pytyper483 said:
There are a few things that could be the problem. You need to determine if it is the phone or the wifi.
What kind of signal are you getting? Are you able to test your wifi for internet? Is this all of a sudden, meaning were you able to use wifi calling without problems prior to this recent problem?
Click to expand...
Click to collapse
It has been happening more frequently lately but I am not really sure on a time frame. I don't make gobs of calls. I have had the phone for about a month or so and didn't have any problems early on. I have tried a few different ROMs but I wouldn't call myself a flashaholic.
My wifi signal at home is pretty decent. My speeds are usually around the 18 - 19 range. No problems with internet. The calls connect pretty quickly.
I do have a cell-fi (sp?) unit on the way from t-mobile which my help but I would just like to try and figure out if something is off with the device.
Thanks!
Information update:
I just made a call from my office (same no cell signal and decent wifi) and call worked fine. Wifi speeds here are a bit slower, usually around 8-9.
Haven't changed router or modem at home. Time Warner Cable is the provider.
Will check my son's phone tonight. He also has the S3 but being a teenager, I am not entirely sure he knows how to make an actual phone call...
Does the problem seem to happen at the same times of day? Depending on how your isp is set up, heavy network traffic can cause the issue. Also remember that your voice going out is like uploading a file on that upstream data is going to be slower than downstream.
Is your cable modem or router kind of outdated? Last year I upgraded my modem and saw a huge improvement. The DOCSYS 3.0 tech is a lot faster than a DOCSYS 1.0 rated modem can handle.
Sent from my SGH-T999 using xda app-developers app
DocHoliday77 said:
Does the problem seem to happen at the same times of day? Depending on how your isp is set up, heavy network traffic can cause the issue. Also remember that your voice going out is like uploading a file on that upstream data is going to be slower than downstream.
Is your cable modem or router kind of outdated? Last year I upgraded my modem and saw a huge improvement. The DOCSYS 3.0 tech is a lot faster than a DOCSYS 1.0 rated modem can handle.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Today it happened around 8:00 am (EST) and again around noon. I'll check the upload speeds as well.
I swapped out the modem about 4-5 months ago. Not sure of the make. It is the one Time Warner provides. Haven't noticed any major problems with our PC though.
Router does have a few years on it.
I suspect that you're getting one way voice translation... the router is forwarding the incoming voice traffic to your phone but failing to do the same for your outbound traffic. I have a Cisco enterprise class router at my house (I'm an IT geek so I *play* with it) and until I opened up a bunch of ports to a bunch of sites I saw being blocked in the router logs I was having the same issue.
I asked T-Mobile for a list of voice gateway IP addresses at their end but none of the tier 1/2 techs were ever able to give me any useful info regarding IP addresses or ports... The phone keeps finding new IP addresses it wants to connect to so in the end I gave up on getting wifi calling working reliably and have mine set to prefer cellular.
A SOHO or Home router ought to automatically open up the necessary ports but I would suggest looking at the manufacturers web page to see if there's a firmware update for your router. If there is, apply it and see if that fixes the problem. Else buy another one and see if that resolves it. If it doesn't then you can always take it back.
Hope this helps
I thought it was just me that had a wifi problem
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.
Definately check to see if there's any firmware updates for your router like ronin said.
Is it a G or N router? If it is N, check your other devices that connect to it as well. If anything connects to it at 802.11G then all connections with the router can be throttled down to G speeds. If so disconnect the G device, reconnect your S3 and try it again.
Also have you restarted the modem and router recently? Unplug them both from power for about 15-30 seconds. Then plug back in and give it a minute or two for everything to reconnect.
Sent from my SGH-T999 using xda app-developers app
I've been having the same problem all day today. I couldn't quite determine if it's my service or wi-fi, until then, I have it off for now.
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psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.
Click to expand...
Click to collapse
Didn't have to do all of this with V2
psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.
Click to expand...
Click to collapse
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!
J_Bone said:
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!
Click to expand...
Click to collapse
Someone told me once they'll send you one for free if you have lousy coverage at your home. Is that true?
Sent from my SGH-T999 using xda app-developers app
J_Bone said:
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!
Click to expand...
Click to collapse
Woah.. holding my phone landscape killed my WiFi calling. WiFi went from 3 bars to 1 and WiFi calling disappeared. Holding the phone the other way fixed it.....I just had an iPhone 4 problem
DocHoliday77 said:
Someone told me once they'll send you one for free if you have lousy coverage at your home. Is that true?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
If you had good credit they will and you have to have SOME service. Like 1 bar or w.e.
ronin4740 said:
I suspect that you're getting one way voice translation... the router is forwarding the incoming voice traffic to your phone but failing to do the same for your outbound traffic. I have a Cisco enterprise class router at my house (I'm an IT geek so I *play* with it) and until I opened up a bunch of ports to a bunch of sites I saw being blocked in the router logs I was having the same issue.
I asked T-Mobile for a list of voice gateway IP addresses at their end but none of the tier 1/2 techs were ever able to give me any useful info regarding IP addresses or ports... The phone keeps finding new IP addresses it wants to connect to so in the end I gave up on getting wifi calling working reliably and have mine set to prefer cellular.
A SOHO or Home router ought to automatically open up the necessary ports but I would suggest looking at the manufacturers web page to see if there's a firmware update for your router. If there is, apply it and see if that fixes the problem. Else buy another one and see if that resolves it. If it doesn't then you can always take it back.
Hope this helps
Click to expand...
Click to collapse
I believe you are right on. I could not get my Wifi Calling to function properly at work. Text works great, sending and receiving. My phone rings when I receive a call, but I cannot hear anything, neither does the caller. Similarly, when I dial a number, the other phone rings, but no audio is heard on either end. I called TMobile Tech Support and they read me a memo from Samsung that this is a "Known Issue" with "one-way audio" on wifi calling. A salesperson in the store read to me the same memo. Interesting thing is when I got home, everything works, both voice and text. I tried it at another wifi location and everything works also. But not at work. I am convinced it is a problem with the network at work. Puzzle is that Wifi Calling works great on my HD2 with Custom Rom at work using the same enterprise network. But I would hate to keep swapping the micro sim from the S3 into a sim adapter into the HD2 just to get reception at work. I was hoping the upcoming JB upgrade will solve the problem, but reading the above explanation makes me worried now. Anybody out there with any work around?
isaywedoit said:
I believe you are right on. I could not get my Wifi Calling to function properly at work. Text works great, sending and receiving. My phone rings when I receive a call, but I cannot hear anything, neither does the caller. Similarly, when I dial a number, the other phone rings, but no audio is heard on either end. I called TMobile Tech Support and they read me a memo from Samsung that this is a "Known Issue" with "one-way audio" on wifi calling. A salesperson in the store read to me the same memo. Interesting thing is when I got home, everything works, both voice and text. I tried it at another wifi location and everything works also. But not at work. I am convinced it is a problem with the network at work. Puzzle is that Wifi Calling works great on my HD2 with Custom Rom at work using the same enterprise network. But I would hate to keep swapping the micro sim from the S3 into a sim adapter into the HD2 just to get reception at work. I was hoping the upcoming JB upgrade will solve the problem, but reading the above explanation makes me worried now. Anybody out there with any work around?
Click to expand...
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You'd have to have access to the networking equipment at your work to really know the answer why... Short version is that Home routers/firewalls reflexively open ports when a device inside the network tries to access an IP address. UPnP is an example of this... Enterprise class routers/firewalls don't do this as it's considered insecure. So, you have to know what ports the traffic is coming from/going to and allow traffic on those ports. You also want to know what outside IP address it's destined for so you can lock down that traffic to just certain destinations, not the whole internet...
So, if it doesn't work at your office then there's likely very little you can do to fix it unless you're in the IT department or have a really good relationship with the Network Administrator of your IT department.
psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling.
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Lol, really? Show me evidence of this.
What would be the point of Wifi calling if you have a cell connection? I've used Wifi calling since my MT4G and that's a total crock of BS
There would be NO POINT to Wifi calling if you have a cell signal.. common sense...
The phone is constantly connected to cell towers which can triangulate your location.
Is there some sort of root software which would completely intercept and monitor all traffic between you and cell towers? One that would tell you what is being sent and received? And tell you if the GPS is really off.
What about forcing the phone to connect to only one tower?
Dinger558 said:
The phone is constantly connected to cell towers which can triangulate your location.
Is there some sort of root software which would completely intercept and monitor all traffic between you and cell towers? One that would tell you what is being sent and received? And tell you if the GPS is really off.
What about forcing the phone to connect to only one tower?
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You could remove the battery. That will solve it.
antonis_sp said:
You could remove the battery. That will solve it.
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The idea is to have the phone usable...
Monitoring is done mainly by the towers not the phone. Theres no way to stop your carrier from tracking your phones movements around its network.
Your other worries have nothing to do with the carrier. If GPS is off it will show as off unless your phone is compromised, location data will only be sent if you have location reporting on (this does not affect mobile towers from recording device connections).
You could monitor traffic on your phone with something like tcpdump and analyse the data, but a better way would be don't use apps you don't trust.
What exactly are you worried about?
Dubhar said:
Monitoring is done mainly by the towers not the phone. Theres no way to stop your carrier from tracking your phones movements around its network.
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So the protocol is such that you don't address any particular tower but rather just broadcast and that's how they are able to triangulate you?
What about turning the RF radio off and on without taking out the SIM card, know any app to do that? (Assume that I don't need to take calls only place them. The goal being to minimize tracking/interaction with carrier.)
Also can you explain to me or link me to how this cellular protocol knows where to route calls to you? If there is a keepalive signal how frequently is it transmitted? What if you turn off all broadcast but not the radio itself, will the tower still try to route calls to your last known location and if you are there you would be able to take them?
Dinger558 said:
So the protocol is such that you don't address any particular tower but rather just broadcast and that's how they are able to triangulate you?
What about turning the RF radio off and on without taking out the SIM card, know any app to do that? (Assume that I don't need to take calls only place them. The goal being to minimize tracking/interaction with carrier.)
Also can you explain to me or link me to how this cellular protocol knows where to route calls to you? If there is a keepalive signal how frequently is it transmitted? What if you turn off all broadcast but not the radio itself, will the tower still try to route calls to your last known location and if you are there you would be able to take them?
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If you turn the radio off it wont connect to a tower but you also cant use your phone.
Theres maybe a little misunderstanding when it comes to how mobile networks work. There no different from computer networks, and just like computer networks mobile networks track where devices are located on the network. It isn't miserableness for malicious reasons, keeping track of where devices are located on the network helps maintain the networks performance and fix problems. The side effect of mobile devices is there are almost always attached to a body and inadvertently allow the potential for a person to be tracked within a margin of error.
When the radio is on (and im not an expert on this) the phone will periodically contact the mobile tower as far as i know, and does this to make sure your connected to the right tower for it to route traffic to your phone or move you to a tower with a better signal.
If your really bothered by it, put it in air plane mode and use wifi only with encrypted calls. But wifi can still be used to approximate a location just like any other means of communication.
It would be good to know your goal? If it is simply to not be tracked your _only_ option is to not use a mobile phone. People do that, for that exact reason.
Dubhar said:
If you turn the radio off it wont connect to a tower but you also cant use your phone.
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By not use it do you mean it won't even boot properly or I simply won't be able to place or receive calls?
If the latter, I would still like to know how. Is there an app for that?
Dinger558 said:
By not use it do you mean it won't even boot properly or I simply won't be able to place or receive calls?
If the former, I would still like to know how. Is there an app for that?
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Put it in airplane mode. By not use I mean no phone calls or internet.
Dubhar said:
Put it in airplane mode. By not use I mean no phone calls or internet.
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Airplane mode disables WiFi as well, this won't do.
Surely there is a root app that can toggle the cellular RF radio?
Dinger558 said:
Airplane mode disables WiFi as well, this won't do.
Surely there is a root app that can toggle the cellular RF radio?
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You can turn on wifi after you put airplane mode on, but it defeats the purpose. You can be tracked via wifi.
Non of this also considers if the phone is compromised or if it collects data and sends it once it is connected.
Dubhar said:
You can turn on wifi after you put airplane mode on, but it defeats the purpose. You can be tracked via wifi.
Non of this also considers if the phone is compromised or if it collects data and sends it once it is connected.
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WiFi tracking is impractical. I'm only interested in disabling the cellular network unless I want to place calls.
Dinger558 said:
WiFi tracking is impractical. I'm only interested in disabling the cellular network unless I want to place calls.
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Actually WiFi can be even more beneficial. It's not dependant on the phone network meaning the tracking information can be sent anywhere in the world, you can send more information than just mobile tower beacons, tracking data can be recorded and sent later when a connection is made either though WiFi or mobile data. Its not dependant on your phone either, your phone sends out a WiFi beacon periodically looking for wireless networks, any WiFi AP within range will pick up this broadcast from your phone and potentially record it ( it is identifiable), additionally your phone broadcasts all WiFi APs you've connected to to see if it can reconnect to them, these can be recorded and used to predict and track movements as well.
You still haven't said what the purpose of this is and im starting to think your just trolling. Turning off the mobile radio is practically pointless if you're connected by any other means.