Android :: Cellular-WiFi Switch
Feb 3, 2010
I'm doing a research on Cellular-WiFi switch and finding any mechanism to handle cellular hand off.As far as i've found,an http request is routed through WiFi network if connected even gprs/cellular connection is present.
My queries are:
1)Does this switch happens automatically ? If yes,which part of framework or code does that?
2)Does the http request drop in such situation due to cellular hand off ? Is there any way to handle such hand off ?
3)Does gprs cellular connection reconnects automatically when WiFi gets disconnected ?
4)Which type of alerts or notifications normally user gets in such situations ?
Yours feedback and inputs will be of great help for me in this activity.
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Oct 20, 2009
Can't seem to figure out how to do it.
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Jan 9, 2014
When I'm not around wifi and try to get online, phone won't use cellular unless I manually turn off WiFi. Can I set up the phone to use cellular automatically whenever wifi isn't available?
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Dec 7, 2009
Phone: Droid
Situation: On airplane with in flight wireless. Want to allow wireless, but disallow cellular, including 2g/3g data.
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Nov 28, 2013
whether or not you get SMS texts delivered to Hangouts even when you are in airplane mode but have wifi enabled?
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Jul 4, 2013
When you have your WiFi and your 4G on and you are connected to WIFI which one will ur phone use first? Or is your phone actually using both WiFi and 4G? I always thought it was WiFi then 4G if WiFi is unavailable.
DROID RAZR
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Feb 12, 2014
Radio Shack had this phone on sale for $14 cash this weekend, I picked up a couple of them to setup to use for WiFi text/music/YouTube phones for my kids.
I have rooted them and now just want to get rid of the Virgin Mobile automatic profile update that attempts to happen when I power on the phone. If possible, I would like to permanently disable the cellular data/voice modem as well leaving WiFi enabled. What app I should disable/ remove through titanium backup to do this?
I have absolutely no intention of ever activating these phones for traditional cell service. They will strictly be used as WiFi android devices. Basically a cheapo alternative to an iPod.
I have set the phone for airplane mode and then enabled WiFi to prevent them from making calls, this is a reasonable solution but they could turn on the cell radio and start trying to activate, although they wouldn't get far as they don't have a way to provide payment anyway.
Problem is their mother isn't the brightest and when they are away at mom's, I would like to be able to text them and not be on the phone with her troubleshooting them constantly.
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Aug 18, 2010
Assume that, I have a TCP connection that doing heavy data transmitting on my 3G network; and I walked home, Android switch to my home Wifi automatically. Now what happen to the existing connection? is it simply disconnect? or it will keep going, only the new connections will use wifi?
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Aug 18, 2010
Assume that, I have a TCP connection that doing heavy data transmitting on my 3G network; and I walked home, Android switch to my home Wifi automatically. Now what happen to the existing connection? is it simply disconnect? or it will keep going, only new connections will use wifi? In addition, what if I walk away from home, wifi lost signal and switch to 3g? It should be safe to guess the connection is dropped. For my application, do I need to handle the reconnection or there is a auto fall back solution.
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Nov 16, 2010
My Application needs to Download some bigger Files. I use a Service for the Download an show the Progress in a Notification. The Problem is that during that download time the user can switch from 3g to WIFI. In that case the progress stops but no exception is thrown.
How do i handle this situation properly?
CODE:.................
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Jul 7, 2010
Does the evo auto switch from 3g to wifi when I enable wifi and begin browsing on the internet?
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May 5, 2010
Can someone recommend a good app to automatically toggle wifi based on when I leave my house, which is the only place I use WiFi.
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Sep 20, 2012
I seem to have a weird problem on my HTC Sensation. I have been noticing that when the phone switches from Wifi to 'H', the mobile data stops working. I can see the signal bars so no problems with making calls, text etc. I have tried putting phone into airplane more, resetting mobile data and a couple of apps that reset the mobile data stack. None of that has worked. The only way I have made it work is by restarting the phone - quite frustrating. The mobile data then starts working. It has only happened when 'H' is displayed as the mobile data.
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Apr 21, 2012
basically I have 2 routers with different SSIDs set up in my house.
I was wondering if there is a way I can have it automatically switch to the one with a better connection through an app or script of some sort or a way that I can at least make a shortcut on my launcher to do this?
now that I think about I could toggle wifi off and on but is there a better way?
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Nov 7, 2013
Wifi is not working i Cant switch the Wifi on. I have a Note n7000 android 4.2.2 cyanogenmod 10.1 nightly.
Can't press the small wifi button on dock it will not recognize on the other hand i can press the Bluetooth without any problems and when i go to the settings the small _OFF_ button will not recognize me pressing it.
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Jul 26, 2010
I go out into cities alot, and I usualy grab a coffee in either a Costa, or a Nero. These both have BTFON WiFi hotspots. At the moment I can connect to these as I have BT Openworld at home. However, my BT contract is being cancelled tomorrow, they're bloody expensive, and as a result, my access to these hotspots will stop unless I subscribe to thier BTFON service.
If I stop my Desire connecting to these by switching off WIFI, will the phone then automatically switch to 3G for internet access?
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Dec 30, 2009
Does the Eris switch to 3G when it picks up Wifi? Is it switchable where are the settings/preferences if any?
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Aug 21, 2013
I found that when my WiFi is on, when screen is off due to screen timeout, when I try to open screen again by pressing menu button or power button, nothing happened, I need to switch the mobile on again by pressing power button long press (not normal press to open as usual if you switched off manually)
someone told me because mobile is duos, may be you have only two gateway, when WiFi is one with access of data plan of two Sim cards, may be doing conflict, actually last week I switch data plan access between two Sims last week and I think this problem came with this action, I delete APN access points from one of two Sims but it didn't solve this problem.
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Apr 6, 2013
I am searching for a app that will automatically switch my WiFi signal from one signal that is weak or getting weak to another signal that is stronger. Example I am at work and I will be connected to a hot spot on one side of the building, I go over to the other side of the building and the signal strength is weak and there is a new hot spot next to me that is extremely strong but the phone stays connected to the weak signal until I go and switch it manually to the new hot spot.
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Aug 8, 2013
I'm searching for an application that can switch CM 10 profiles based in wifi connections.
Thought [URL].... could do that, but it manages its own profiles.
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Jul 8, 2010
I just rooted my phone, I had to get the 2GB pny card from wally world and I have a bigger SD card. I'd like to use but don't wanna lose my WiFi tether, and I've heard you have to have the file on my pny to keep it, theres a way to do this.
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Jul 22, 2009
Just two quick questions: When connected to wifi, do internet connections made on the device automatically go via wifi as opposed to 3g etc and if not then is there a way to organize which wireless connection 'methods' have higher priority (i am worried about excessive data costs). Second question is: Is there any multi tasking support on the Magic and if so then how do you switch between applications?
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Jul 24, 2010
For those of you trying to squeeze as much time out of the battery as possible, I came across this nifty program which I don't think has been mentioned yet: AppBrain: Y5 - Battery Saver - Android app on AppBrain Official: Y5 Battery Saver: Home. When you connect to a Wi-Fi network, it uses the GSM base tower identifier (CellID) to determine the location of the Wi-Fi network and stores it in memory. It does not use the GPS. I saved my home network earlier this afternoon and went out, Wi-Fi was turned off while I was out, then after I came home and started using my phone, I was connected again, so it seems to be working so far.
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Jul 10, 2010
Very happy with the i9000 in the last few days of ownership, using launcher pro in place of stock but otherwise mostly unchanged. One issue we have is that after being at home overnight on WiFi, the phone doesn't automatically re enable 3g. To restore the mobile data you have to go into the network operator selection and re select Optus (our carrier here in Aus). Leaving it on auto doesn't help, and you have to manually choose it each time (ie: it "forgets" what I selected or something). Using apndroid to mangle the apn on/off doesn't help. Restarting the phone fixes it but obviously not ideal.
Have tried entering the code to change it to gsm only instead of the default wcdma/gsm auto with no benefit. When the mobile data is working, it happily switches between 2g and 3g, but will sometimes simply stop working as per the wifi overnight problem and I have to manually select the operator again. This happens very randomly and can go several days without drama, our only a few minutes. While this data won't connect, the phone capabilities aren't affected and you can make and receive calls fine. In fact if you dial a number it sometimes causes the data to re connect.
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Jun 9, 2010
I'm working on a Push Notifications library for Android (http://deaconproject.org/) that needs to take action if network connectivity is interrupted or changed - namely, it needs to re-initiate a server connection or pause its operation until network connectivity is available. This seems to work fine using and Android BroadcastReceiver for "android.net.ConnectivityManager.CONNECTIVITY_ACTION".
My problem is in testing the library - I would like to automatically test the library's response to a broken network connection, or a transition from 3G to WiFi, under various configuration conditions. The problem is, I don't want to sit with the emulator and hit F8 all day.
Is there a way to programmatically manipulate network connections on Android from within a jUnit test without resorting to toggling Airplane Mode? I've already tried issuing commands to the emulator via the console, manipulating the GSM mode, etc, but while the phone state changes on the display, the Internet connection remains up.
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Dec 30, 2009
how can i forcefully send data packets over gprs n/w eventhough wifi is on?how to create socket for gprs n/w in android and to know gprs ip?
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Apr 15, 2014
I am thinking of using Llama to switch on and off automatically the WiFi Hotspot function on my Mototola Razr XT910.
I have watched some tutorials but cannot understand, or maybe I have watched the wrong ones. I have tried to do it but I cant find how...
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Jun 18, 2010
I think the Android emulator has the capability to emulate incoming phone calls but I am wondering if there is a capability to place outgoing calls to existing cellular networks through the appropriate hardware interface. Is there any documentation of such a functionality I look into?
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Feb 1, 2010
Does android framework support automatic switch to Wi-Fi when detected, from cellular network ? Please post your views.
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Sep 30, 2009
When the application has a PARTIAL_WAKE_LOCK, the CPU stays turned on, but what about the cellular antenna? Does the PhoneStateListener not receive any change in state from the antenna when the PARTIAL_WAKE_LOCK is acquired?I have an application that needs to continuously read the signal strength while the user isn't using the phone.I suspect I need a FULL_WAKE_LOCK to do that. Is that true?
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