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?
Click to expand...
Click to collapse
You could remove the battery. That will solve it.
antonis_sp said:
You could remove the battery. That will solve it.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Related
I work in a building that is well shielded in most places and get no signal. My phone drains incredibly quick when this is the case. Is there a way to reduce the polling frequency that it looks for a tower to stop this? I thought juicedefender might but I can't figure a way to do this.
Rom: Fresh 4.0.0.4b
Kernel: netarchy 4.3.1.4 cfs have no sbc
hw version 0003
juicedefender ultimate
setcpu 200-1152MHz, smartass governor
Thanks!
When I'm in an area where I roam or have very poor signal I notice increased drain rate as well. This was the same with my TP2. I've always just understood that when the phone is constantly seeking signal and cycling back and forth between roam/3G/1x the battery drains faster.
Your best option, is to utilize "airplane mode" when you know you're going to be in an area that had no signal/you won't be able to use it. I hate to do it because I don't like my family not being able to reach me in case of an emergency, but it is one option for you.
I second the airplane option. Also, WiFi is available while in airplane mode. Perhaps your building has WiFi you can connect to and you can keep something like AIM or Facebook or Google Voice/Talk open and instruct those who might need you in an emergency to reach you through the method of your choice so that you may call out from a landline or step away from the building if there is an emergency.
Just a thought.
See if you can get in on the new Google voice option where you can make your sprint # your Google voice number. Once you have done that you can have your work # as one of your forwarding numbers if your work allows. Or airplane mode with a 2nd charger for work.
Sent from my PC36100 using XDA Premium App
Yep, Airplane mode is the ONLY way to turn off the cell radio. Otherwise, it will be constantly polling for a tower.
Dial ##3282# from a froyo sense rom and it will bring up a menu where you can change how often it polls the tower. It's Going to affect how long it takes your phone to receive calls though.
Sent from my EVO
If you know you're not getting reception, why not just use airplane mode? I mean, if you don't have reception you're not getting contacted anyway.
If you want to go the airplane mode route, Tasker is a great app that lets you control lots of things. You should be able to turn off your radios at set times during the day and have them enable after you get out of work.
I just loaded the 2.1 EPST and run a Verizon PRL when I am at work. I get a crappy Sprint signal at work. However your issue seems to be different as the walls/windows may be blocking all signals? Verizon seems to penetrate better though.
With Tasker, you can also set your phone to airplane mode during work hours, but automatically turn it off and enable data every fifteen minutes (or however long) to check for text messages, voicemails, etc. That is assuming that you get any signal at work... if you don't have a signal at all, just turn airplane mode on yourself.
To answer your question:
Yes, not having a signal will drain your battery. The phone will keep increasing the radio strength to lock onto a tower. Opposite is true to, if you have a strong signal, the radio will decrease the power level thus saving battery power.
You might want to contact Sprint ([email protected]) and let them know that you don't get service in your work building. They gave me a airwave device, but have to have Internet connection for it to work. The only other option might be to have some type of power booster/repeater that are typically very expensive. Not sure how your employer would feel about these suggestions - but never hurts to ask.
I am military and work on a base. The entire internet is locked down except for official military business, so an Airave device wouldn't work.
No internet, no cell signal and neither AM or FM penetrates. Maximum pain.
I'll try tasker, thanks guys.
tomplatz said:
I am military and work on a base. The entire internet is locked down except for official military business, so an Airave device wouldn't work.
No internet, no cell signal and neither AM or FM penetrates. Maximum pain.
I'll try tasker, thanks guys.
Click to expand...
Click to collapse
In that case, if you don't already have Tasker, I'd just turn airplane mode on yourself when you get to work & turn it off when you leave. Or there are free apps that will do it automatically that aren't as complex as Tasker. Unless you find another use for it, then go ahead.
Would roam control work to try verizon towers? I think they have a stronger signal locally.
tomplatz said:
I am military and work on a base. The entire internet is locked down except for official military business, so an Airave device wouldn't work.
No internet, no cell signal and neither AM or FM penetrates. Maximum pain.
I'll try tasker, thanks guys.
Click to expand...
Click to collapse
LOL you said it yourself. If the military doesn't want you getting signal, you're not getting signal. In general, if you can't get radio signal you can't get cell phone signal. Early cell phones operated on FM (type: frequency modulation) radio and what we're using now is basically a digital-type FM radio. In the end it's all EM waves and you're likely in a giant Faraday cage of a military base. I say avoid even trying to fix your problem and just go airplane mode.
I am completely ignorant of the WiFi configuration and purpose on this phone. Can anyone help?
1) I have an unlimited data plan. Should I care about using WiFi at all?
2) If I have a 4G/3G signal loss, will WiFi automatically kick in to sustain a signal?
3) I currently have no WiFi networks attached, and a scan returns nothing.
Should I be attaching WiFi networks manually. If so, how?
4) Should I just allow my battery optimizer app to disable WiFi?
mds54 said:
I am completely ignorant of the WiFi configuration and purpose on this phone. Can anyone help?
1) I have an unlimited data plan. Should I care about using WiFi at all?
2) If I have a 4G/3G signal loss, will WiFi automatically kick in to sustain a signal?
3) I currently have no WiFi networks attached, and a scan returns nothing.
Should I be attaching WiFi networks manually. If so, how?
4) Should I just allow my battery optimizer app to disable WiFi?
Click to expand...
Click to collapse
1) That's upto you. If your speeds suck, or are in a terrible reception area (switching between 4G and 3G a lot, or stuck in 3G), then Wifi can be faster.
2) If you lose 3G/4G data, it may not connect to wifi unless your configured network is nearby. Normally, wifi will be always connected unless you're out of range of that particular signal.
3) Make sure Wifi is switched on. (switch will be blue in the on position). If you don't see any networks, then there are none. You may have to add networks manually, but thats because its not broadcasting its SSID (ie making itself visible), but thats usually in like a corporate environment.
4) I have noticed that being on Wifi saves me some battery than being on 4G, but your results may vary.
I can only offer advice on the first one. I also have unlimited data but I use wifi whenever possible. Wifi doubles my battery life. Using 4g all the time kills it way too quickly.
Sent from my Galaxy Nexus using XDA
mds54 said:
I am completely ignorant of the WiFi configuration and purpose on this phone. Can anyone help?
1) I have an unlimited data plan. Should I care about using WiFi at all?
Click to expand...
Click to collapse
if you're happy with your speeds then no. WiFi does save battery though.
2) If I have a 4G/3G signal loss, will WiFi automatically kick in to sustain a signal?
Click to expand...
Click to collapse
No, because WiFi isn't always on (or shouldn't be), and won't automatically turn on. You'll have to turn it on manually if 3G/4G isn't available.
3) I currently have no WiFi networks attached, and a scan returns nothing. Should I be attaching WiFi networks manually. If so, how?
Click to expand...
Click to collapse
If there's no WiFi around you, then there's no WiFi around you... The only reason you'd have to manually enter a network is if you're at home and aren't broadcasting your SSID, so you won't pick it up on a scan. You should elaborate more on this.
These comments make me think you don't understand how WiFi works....
4) Should I just allow my battery optimizer app to disable WiFi?
Click to expand...
Click to collapse
Battery optimizer apps don't always know what's best. Usually how they work is they'll turn off WiFi when you get out of range of your house or other specific location (via GPS). Then enable when they "know" you're at home (again, by GPS). Usually its easier to just have a toggle widget for WiFi and turn it on when you're at home if you want it.
I think this additional info may be useful:
Wifi is not a feature of your phone service through your provider. It is a completely different technology that replaces, not amplifies, your 3g/4g connection when it is on and connected. When you are using your phone's data connection, you are connected to the internet through your phone provider, which is also functioning as your Internet Service Provider (in your case, Verizon).
A wifi signal only exists when a wireless device is broadcasting it locally. Most often this is a wireless router in someone's home, office, or a store that offers wifi for its customers. In this case, your internet connection goes through the router, then to a hard-wired internet connection off to whatever ISP the service is paid for through.
It is a much shorter-range technology than your cell service. As such, while your phone will eat through your battery boosting its signal if it can't connect to a cell tower, your phone will use much less energy looking for wifi signals.
If you are absolutely sure that you will not be connecting to wifi networks in your daily travels, you should turn wifi off and not worry about it. If you have an existing wifi connection at home/work, then leaving wifi on and letting it connect will save you battery when you are within range. The idle drain of wifi when it is looking for networks is fairly low, so if you are going to be spending large amounts of time in wifi zones, you might as well just always leave it on.
If your phone shows no wifi available by a scan, chances are very slim that there is a non-broadcast network that you would be able to connect to manually; someone is keeping it hidden and it is most likely password-protected as well. Most private networks will be visible to a scan, but are probably password protected. You will need to connect to these manually; your phone will not alert you to their presence. Your phone will automatically let you know if there is an unprotected network in range. By default, if wifi is enabled, it will automatically connect to any network that comes into range that you have already connected to.
Wow, you guys are good! Thanks!
Where I live there is -50 bars of cell service, so when WiFi calling drops it starts searching and absolutely murders my battery life. Is there anyway to hack the system to allow WiFi calling while in airplane mode? I've heard certain phones can do it. Are there any devs on here that have the know how? I know we have some very talented people in the community so I'm hopeful. It seems like it should be pretty easy because while on WiFi calling the cell radios get shut off and WiFi works in airplane mode, so?
I'm just not convinced WiFi calling will ever be more reliable and only getting 9-12 hours on a charge really sucks! Anyways, here's to hoping for a fix!
If you go to WiFi Calling Settings -> Conection Preferences -> WiFi Only.
I think that would do the trick.
Sent from my SGH-T999 using xda app-developers app
^ Tried it out of curiosity because it would be useful to me, but that does not work.
I wonder if it would work if you used a program like Tasker to cut only the cell radios without explicitly entering "airplane mode". Although I'm not 100% sure that is possible or if some other work-around is needed.
Maybe there's something that can be added to the csc feature.xml? Not sure what it'd be but theres already these listed:
<CscFeature_Settings_Airplane_Wifi_Dependency>false</CscFeature_Settings_Airplane_Wifi_Dependency>
CscFeature_Web_Bool_StartWIFISettingInAirplaneMode>false</CscFeature_Web_Bool_StartWIFISettingInAirplaneMode>
You could check other devicrs that have wifi calling and see if theirs is listed. This may not even work, but could be worth a look.
Sent from my SGH-T999 using xda premium
---------- Post added at 05:48 AM ---------- Previous post was at 05:19 AM ----------
Also, there's an app in the store called Bobsled Calling (also a Bobsled Messaging app) listed under T-Mobile top picks. Don't know how good it really is, but I was thinking bout giving it a shot on my old phone that has no cellular service at all.
One of the only ones I've seen where the people you call don't also have to have the app.
Maybe it'll allow you wifi calls under airplane mode?
Sent from my SGH-T999 using xda premium
You can try going to your Phone app and typing in *#*#4636#*#* -> Device information and then hit the 'Turn off radio' button. I used it before when Hurricane Sandy knocked out the cell towers and I was left with just random WiFi hotspots, but this was back on ICS. Though I don't see why it shouldn't work with JB.
If the code doesn't work, go to the Play Store and download an app called 'Phone info' (Author: [email protected]). The app should take you to the Testing menu.
Instead of constantly typing all those numbers (*#*#4636#*#*), download the app, Phone Info in the Play Store and there you go....
Please read forum rules before posting
Questions go in Q&A
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator
That app doesn't work because when WiFi calling is working the radio is idle. Service menu is a no go.
Sorry I didn't post it as a Q but I didn't have a clear question. I wanted to discuss the topic. I thought about yet where to post it before I did, thanks.
WiFi calling with Cellular Radio turned off
I am trying to accomplish the same thing but was approaching it from a different angle. The service menu idea doesn't work.
We are both trying to accomplish the same thing. Use WiFi calling while having the Cellular radio turned off. Airplane mode turns off all radios and you can re-enable the WiFi radio. However the Galaxy S III will not allow a call to be made while the phone is in airplane mode. This is a low level system issue and not related to the dialer (I tired three different dialers).
Does any body know of a way to do this??? PLEASE??? I'm leaving for Brazil in 4 days for a month and I would like to be able to do this in Brazil.
This is a copy from another posting:
ChitownWingMan said:
I am trying to enable WiFi calling with the cellular radio turned off.
According to Samsung & T-Mobile the only official way to turn of the cellular radio is to enable Airplane mode.
Here is the procedure that I tried:
Enable Airplane Mode
Turn on WiFi
Connect to a functioning WiFi hotspot
Enable WiFi Calling
Wait for the WiFi Calling Icon to appear in the status bar
Make a WiFi call
At this point the dialer sits at the dialing screen for more than 10 minutes (I bailed at 10 minutes). As soon as I abort the dialing attempt a dialog box pops up saying you cannot make a call while in Airplane mode.
Is there any way to completely disable the cellular radio without putting the phone in Airplane Mode?
Is there an app that will do this?
Is there a hidden that will do this?
Please don't use bandwidth by asking why I want to do this or suggesting that I use Skype or some other app. My goal is to be able to make and receive VOIP calls while the cellular radio is completely disabled.
Thank you for your help...
Click to expand...
Click to collapse
I think maybe the phone HAS to ping a cell tower in order to make WiFi calling work. For your purposes just set the WiFi calling connection preference to WiFi only.
psykhotic said:
I think maybe the phone HAS to ping a cell tower in order to make WiFi calling work. For your purposes just set the WiFi calling connection preference to WiFi only.
Click to expand...
Click to collapse
I have zero reception at my house and wifi calling works.
Setting it to "WIFI only" doesn't allow it to work the way that's wanted - it just tells the phone to only make calls over WIFI - but that doesn't open up the ability to do so when the radios are off. From what is described I agree that this sounds like a conflict with the low-level integration.
Did anyone try that Bobsled app I mentioned earlier?
It claims that I could put it on a tablet or my old phone that has no sim/data, and it would work.
If it were to work is that something that could get you by for a while? I understand not wanting to go 3rd party, but it could be the only option for now. It is a tmobile app btw.
Sent from my SGH-T999 using xda premium
I meant for the guy going abroad. Although he needs to also make sure data roaming is off, I think.
Doc I did look but my problem is I want to use my tmo number. I have a house phone but it's really frustrating to tell people they have to try me at two different numbers. And not being able to text.
psykhotic said:
I meant for the guy going abroad. Although he needs to also make sure data roaming is off, I think.
Doc I did look but my problem is I want to use my tmo number. I have a house phone but it's really frustrating to tell people they have to try me at two different numbers. And not being able to text.
Click to expand...
Click to collapse
There's also a Bobsled messaging app. Pretty sure its the same deal and works via wifi.
Also, I could've sworn it said that you have the option of using your current cell number. Maybe I'm mixed up on it...
Anyway, its just a suggestion for looking at. I have no idea how good it really is... just don't have many other ideas for you guys at this point.
I wonder if there could be a build.prop value that would disable cellular only. Or set its scan frequency like you can do for wifi.
Sent from my SGH-T999 using xda premium
What were they thinking
psykhotic said:
I think maybe the phone HAS to ping a cell tower in order to make WiFi calling work. For your purposes just set the WiFi calling connection preference to WiFi only.
Click to expand...
Click to collapse
I have done some more research.
I was able to turn off just my cellular radio by using the phone info application to enter the service menu (Phone Info App->Device Information, scroll down and select Turn off radio).
With the cellular radio turned off I tried to enable Wifi Calling (Settings->More Settings->W-Fi Calling).
The phone says "enabling", turns on the cellular radio (without any messaging saying that it is doing this) and then says "Ready for Calls".
I also tried enabling WiFi Calling first and then turning off the cellular radio (using the method outlined above). But the cellular radio would not turn off as long as WiFi calling is enabled.
I don't know if this is a bug or a "feature" but for WiFi Calling to work on the T-Mobile SGH-T999 (4.0.4 Firmware) the cellular radio must be enabled. Though I'm sure T-Mobile has a reason for this the logic of it escapes me. WiFi calling should not need the cellular radio for any reason. I use Skype all the time and it doesn't need cellular service to operate on WiFi.
If anybody out there knows how I can make and receive phone calls using my regular cell phone number exclusively via WiFi (with the cellular radio disabled) please let me know. Many thanks to the person who figures this out
As long as you are connected to Wi-Fi, with Wi-Fi calling activated (blue icon showing), it should automatically disable the cellular radio. If you are connected to Wi-Fi, but no blue Wi-Fi calling icon, then it will turn on cell radio and start searching for towers.
Sent from my SGH-T999 using xda app-developers app
Lagar said:
As long as you are connected to Wi-Fi, with Wi-Fi calling activated (blue icon showing), it should automatically disable the cellular radio. If you are connected to Wi-Fi, but no blue Wi-Fi calling icon, then it will turn on cell radio and start searching for towers.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Duh.. the reason to use it in airplane mode for me is that WiFi calling disconnects every few minutes and when the cell radio is searching since I have 0 coverage it absolutely kills my battery.
psykhotic said:
Duh.. the reason to use it in airplane mode for me is that WiFi calling disconnects every few minutes and when the cell radio is searching since I have 0 coverage it absolutely kills my battery.
Click to expand...
Click to collapse
Sorry but you're not making any sense. You're complaining about your phone's search for cell towers killing your battery because your Wi-Fi calling keeps disconnecting? Let's say you find a way to disable your cell connection. Your Wi-Fi calling still keeps disconnecting and you still can't receive or place calls. What's the point? Longer lasting "iPod"? Maybe start looking for a way to fix your Wi-Fi calling problem would be a better solution, ie. Flashing a different ROM until you find something more stable. Duh!
Sent from my SGH-T999 using xda app-developers app
Lagar said:
As long as you are connected to Wi-Fi, with Wi-Fi calling activated (blue icon showing), it should automatically disable the cellular radio. If you are connected to Wi-Fi, but no blue Wi-Fi calling icon, then it will turn on cell radio and start searching for towers.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
These are the following options available (all of these options have the cellular radio enabled and working at all times):
1. Make calls using the cellular network only - WiFi Calling disabled.
2. Wi-Fi Preferred - Make calls using WiFi Calling if a valid WiFi network is available and connected. Cellular network calls are made when a WiFi network is not available.
2. WiFi Only - Makes only WiFi calls. Cellular calls are not made when a WiFi network is not available. Note: This does NOT disable the cellular radio.
3. Cellular Preferred - Makes cellular network calls are made if a cellular network is available. WiFi calls are made if a cellular network is not available and a WiFi network is available and connected.
When enabling WiFi Calling the cellular radio is briefly disabled and then re-enabled..
Lagar said:
Sorry but you're not making any sense. You're complaining about your phone's search for cell towers killing your battery because your Wi-Fi calling keeps disconnecting? Let's say you find a way to disable your cell connection. Your Wi-Fi calling still keeps disconnecting and you still can't receive or place calls. What's the point? Longer lasting "iPod"? Maybe start looking for a way to fix your Wi-Fi calling problem would be a better solution, ie. Flashing a different ROM until you find something more stable. Duh!
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
I've tried multiple ROMs and multiple routers so.....
My only "solution" would be to not use my phone at all at home and just turn it off. I'd rather have a longer lasting iPod than a paperweight.
I have the Note 3. And everytime I connect to WiFi my cell signal goes from full LTE signal to nothing. If I turn the WiFi off my cell signal comes back.
I have WiFi calling turned off - Can someone please help me with this.
Thanks
millerliteguy said:
I have the Note 3. And everytime I connect to WiFi my cell signal goes from full LTE signal to nothing. If I turn the WiFi off my cell signal comes back.
I have WiFi calling turned off - Can someone please help me with this.
Thanks
Click to expand...
Click to collapse
Some phones do this and some do not. Mine did it on stock but when I flashed Jedi it no longer did that.
You can install the X posed framework with Wanamaker module and enable the 4G let icon all the time. That's what I do.
I would have to assume the radio goes into a lower power mode when WiFi is on. Do you really need your radio to tx/Rx full blast when on WiFi? Just because no bars are showing does not mean you don't have signal. I have wondered about this myself, because often this phone and others have exhibited the same behavior. Checking your signal manually always assures me that my radio hasn't shutdown. You don't need LTE anyways as there is not voice over LTE and I would rather have it downgrade to umts which I am sure it does. I do wish there was an option to over ride this for those rare moments you are expecting an important phone call but at the same time I am not that insecure nor do I let technology rule my mindset like that.
sent from my sm-900t.
---------- Post added at 06:52 PM ---------- Previous post was at 06:49 PM ----------
Forgot to add that when you do not have any signal you get the no signal circle which is rare when I am in a place I know I have good signal.. And when you see no signal in a place you think you should have full signal often times there are the other variables to consider.
sent from my sm-900t.
millerliteguy said:
I have the Note 3. And everytime I connect to WiFi my cell signal goes from full LTE signal to nothing. If I turn the WiFi off my cell signal comes back.
I have WiFi calling turned off - Can someone please help me with this.
Thanks
Click to expand...
Click to collapse
I had the same problem and people made fun of me on here and said I didn't set my wifi calling preferences properly. Well, I did, and I'm sure you did too. The only thing that fixed it for me was flashing a custom rom. Both custom roms I've tried fixed it (MyRom and Wicked). Bug in the T-Mobile Rom if you ask me...
I'm on Tmobile and I'm having the same problem you have. I lose 4G LTE when my wifi is on. Wifi calling is off because of the caller id issue with oli or ;63, but that still occurs even with wifi and wifi calling off. It's hard for me to make a call on wifi since it will keep trying to redial with no reception. I always have to turn off wifi just to get my bars back and go on 4G to make a phone call.
It's pretty irritating if you ask me; hope either Samsung or Tmobile will make a software update asap.
millerliteguy said:
I have the Note 3. And everytime I connect to WiFi my cell signal goes from full LTE signal to nothing. If I turn the WiFi off my cell signal comes back.
I have WiFi calling turned off - Can someone please help me with this.
Thanks
Click to expand...
Click to collapse
Why do you want LTE on if WiFi is on.
When both networks are enabled then you are attached to two IP networks.
How are you going to make your IP traffic route if it is attached to two different networks?
I'm not saying it can't be done, I'm just saying that is the way it would be designed to work I would think.
There are definitely tools out there that show that they are not both active at the same time
I'm going to interject on this subject because it is annoying as hell. First of all I have the same problem, but when I'm connected to wifi, my cell signal drops to nothing and if I'm on a call I hear nothing but choppy voices and the calls always drop within 2 minutes. It may put the cell radio into a low power status but it also makes making or receiving calls unbearable or even impossible on wifi. I use a data on off widget and when I'm not using my phone I turn the data off, so this is not remotely an issue with me. My ability to talk on the phone is a huge issue and cell signal drop for me has caused me to never connect to wifi on my G-note3.
Sounds like the WiFi calling bug. My cell signal is terrible at my apartment on WiFi so I have low signal issues regardless. I have no problems in other places when connected to WiFi and making phone calls. I am on at&t though and do not use WiFi calling.
sent from my sm-900t.
I had the same issue with my first note 3. I went back to tmo and argued It the no signal issue. It showed no signal when wifi was on but the cell was preferred over wifi calling. Turned off wifi signal, on no signal. Then after a few minutes the bars appeared back with wifi on. The manager came and told me that's normal for the bars to disappear. I said No Way Because they were there yesterday. But she said it's normal with wifi on I said I don't use wifi calling be I have good signal in house, But Need It on for browsing. She that's how it is I said bs, so I looking at my phone and I see no signal bars unless I turn off wifi or use wifi calling. Don't think so. And they only way I can check for signal is when I'm on wifi is to call.. No way. She said it's not a phone issue but a tech issue. I said it's the phone why was it on for the last 13 days ago now gone with wifi on. Finally she said she would exchange it. All this bs and she is my friend too. Now my phone doesn't have the issue but has rebooted by itself once again. I knew it was coming because the phone just froze on the flip app. I like Android and it's features, but damn I mess ios's stability.
Have you all checked your status when on wifi?
Sent from my SM-N900T using Tapatalk
les_garten said:
Why do you want LTE on if WiFi is on.
When both networks are enabled then you are attached to two IP networks.
How are you going to make your IP traffic route if it is attached to two different networks?
I'm not saying it can't be done, I'm just saying that is the way it would be designed to work I would think.
There are definitely tools out there that show that they are not both active at the same time
Click to expand...
Click to collapse
It's not about LTE and attempting to use data, it's that you lose all cellular coverage so you can't make calls. Even if I'm getting 100% of my data from my wifi, I still need to maintain a connection to the mobile tower to route calls (with wifi calling disabled, which I immediately do because it's unreliable and sucks).
HughesNet said:
Mine did it on stock but when I flashed Jedi it no longer did that.
Click to expand...
Click to collapse
Do you have a screen shot of it?
I assume when on Wifi and Wifi calling off, 4G LTE is not on because it's primarily on Wifi but you have signal bars.
With Wifi on and Wifi calling on, again the Wifi icon over takes the 4G logo. But the signal bars are down to zero because your using Wifi signal due to Wifi calling.
Just because it doesn't show signal bars doesn't mean you don't gave signal. Your dBm and asu trump bars.
Sent from my SM-900T.
apols said:
It's not about LTE and attempting to use data, it's that you lose all cellular coverage so you can't make calls. Even if I'm getting 100% of my data from my wifi, I still need to maintain a connection to the mobile tower to route calls (with wifi calling disabled, which I immediately do because it's unreliable and sucks).
Click to expand...
Click to collapse
I see his pic in the first post now.
I also see how I misread it.
There are 3 separate Radios at least that we are talking about here.
I think the OP should check this setting.
Settings >> Connections >> More Networks >> Mobile Networks >> Network Mode
Then tell us how it is set
Same issue here with Wi-Fi calling off and Wi-Fi on. I think it's just a bug with the signal meter.
Sent from my SM-N900T using XDA Premium 4 mobile app
LaloHigh said:
Have you all checked your status when on wifi?
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
Not sure what I am supposed to be looking at? The mobile network state? Mine also says disconneted when Wi Fi is on. Although my cell bars do not go down when I turn on Wifi is still says "disconnected". What does it mean? I tried calling my number it still receives calls.
les_garten said:
I see his pic in the first post now.
I also see how I misread it.
There are 3 separate Radios at least that we are talking about here.
I think the OP should check this setting.
Settings >> Connections >> More Networks >> Mobile Networks >> Network Mode
Then tell us how it is set
Click to expand...
Click to collapse
It is set as follows - LTE/WCDMA/GSM (auto connect)
millerliteguy said:
It is set as follows - LTE/WCDMA/GSM (auto connect)
Click to expand...
Click to collapse
Do you have any trouble making phone calls when you turn on wifi?
You may want to install "Network Signal Info" or some of the Network info tools and examine your signal levels with and without Wifi to see if these is any change.
"Network Signal Info" is a little buggy BTW
les_garten said:
Do you have any trouble making phone calls when you turn on wifi?
You may want to install "Network Signal Info" or some of the Network info tools and examine your signal levels with and without Wifi to see if these is any change.
"Network Signal Info" is a little buggy BTW
Click to expand...
Click to collapse
Here are the photo with and without wifi turned on
I've read (and THINK I understand) what smart switch is supposed to do (going all the way back to the Note4.
And it seems like the complete opposite of what wifi calling does.
Anyone care to explain the difference or real reasons one is used over the other?
Also on a related note, in the developer options category there is an option to turn on "Aggressive Wi-Fi cell h.."
With the explanation "switch from wifi to mobile networks more quickly when wifi signal is weak"
Kind of self explanatory and my question would be real work use. If you have unlimited data, any reason you would NOT want to check this?
Unless this just sounds great, but doesn't work well......
Thoughts?
vtcats said:
I've read (and THINK I understand) what smart switch is supposed to do (going all the way back to the Note4.
And it seems like the complete opposite of what wifi calling does.
Anyone care to explain the difference or real reasons one is used over the other?
Also on a related note, in the developer options category there is an option to turn on "Aggressive Wi-Fi cell h.."
With the explanation "switch from wifi to mobile networks more quickly when wifi signal is weak"
Kind of self explanatory and my question would be real work use. If you have unlimited data, any reason you would NOT want to check this?
Unless this just sounds great, but doesn't work well......
Thoughts?
Click to expand...
Click to collapse
Smart switch imports the data from your old phone when you switch to a Samsung phone; WiFi calling routes voice traffic over WiFi when available.
Sorry, I meant to say Smart NETWORK Switch. It says your phone will be connected to a mobile network if Wifi becomes unstable.
And Wi-fi calling kinda of says the exact opposite. If mobile becomes unstable, it will switch to Wifi......
Anyone?
Many times.. even when the wifi signal is weak, as long as wifi is turned on, the phone will remain connected to it. This especially happens when you are just pulling out of your house and you are trying to get to google maps for directions or something.. but because the phone is still connected to your home wifi, it'll remain so and since the connection is weak, you won't be able to browse or anything and google maps may say "no network connection".
I believe what Smart Network Switch does, is that in such cases, it'll immediately switch to mobile data.
androidbuff123 said:
Many times.. even when the wifi signal is weak, as long as wifi is turned on, the phone will remain connected to it. This especially happens when you are just pulling out of your house and you are trying to get to google maps for directions or something.. but because the phone is still connected to your home wifi, it'll remain so and since the connection is weak, you won't be able to browse or anything and google maps may say "no network connection".
I believe what Smart Network Switch does, is that in such cases, it'll immediately switch to mobile data.
Click to expand...
Click to collapse
This happens to me every morning in my driveway trying to route Waze. I get a weak wifi signal that the phone hangs onto and I get a no network error from Waze.