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Questions tagged [3g]

For questions about 3G mobile networking and communications standards and their implementations.

535 questions
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How to use 3G network when connected to a WiFi network with no internet access?

sometimes I have to connect my Nexus 5 to a WiFi network only to share some files with other devices, but this network does not have Internet access. I would like to use 3G for data connection while the phone is connected. Obviously I have root…
Rapper_skull
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HTTP request on 3G doesn't work

I try to send HTTP request from my Iphone to local server that run on my local network (behind a router). I forwarded the port on my router as follow: HTTP request is : NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:[NSURL…
Mike.R
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Distribute In-house Apps fail to download with 3G/4G but wifi

When I try to distribute my in-house Apps. I put my Apps and download Html page in Dropbox. But When I download by 3G/4G online, it always fail and show "Unable to Download App", but when I turn to use wifi to download, its works! Is anyone know…
Nick Hung
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Asterisk cannot hear sound on specific WIFI network

Asterisk 11 cannot deliver caller and callee voice sound on specific WIFI network. WIFI phone ==> 4G LTE phone (Can hear sound/Working) == Using SIP RTP CoS mark 5 -- Called SIP/01036504100 -- SIP/01036504100-00000594 is ringing --…
Jake
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What kind of a connection do realtime native mobile apps use?

I want to build a realtime native mobile app, which will be mostly operating through 3g. I wonder how I can connect my back end (whatever that might be) to my native mobile app. I looked into websockets (specifically SockJS with Node), but it seems…
SudoPlz
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How to test the stability of internet connection for this particular scenerio

I work for a company and we have a device that we are installing in small shops for their payment transactions. This device uses internet connection as the primary connection and in case internet goes down, it fails to 3G connection. During this…
user3397379
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Android to Android device communication through the internet(wifi or 3g)?

What is the best way for an Android app installed on two devices to communicate with each other in the internet(wifi or 3g)? Is Google Cloud Messaging is the correct path and what are the other ways?
user3516943
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Arduino 3G shield

I have an Arduino UNO and a 3G shield ( http://imall.iteadstudio.com/development-platform/arduino/im121026002.html ). To connect to the internet I had only to configure the APN once which the SIM provider gave me and write the PIN number via AT…
user1737538
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How to programmatically start 3g connection on iphone?

how to programmatically start 3g connection on iphone? do I need to use socket api?
tech74
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Gathering Data from 3G modem

I need to extract the following data from a 3G modem: The mobile network code The mobile location area code The connected mobile cell tower ID The SIM security status (Unlocked, PIN or PUK) The SIM serial number My technique of getting data from…
Cornel Verster
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Android stream m3u radio fails on mobile data (g3/mobile data)

Not very easy to explain: I have this app for streaming online radio. The problem was first with m3u format (which android somehow cannot normally stream like pls), so I have to parse the url with this ParserM3UToURL (that I found somewhere)... like…
user568021
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Mimic 3G network traffic of selected telco operator

Currently, I need to perform some network communication with a mobile gateway. The mobile gateway is expecting 3G network traffic of selected telco operator. I was wondering, is there any I can mimic such traffic from my laptop? Or, from my 3G…
Cheok Yan Cheng
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Split caldav PROPFIND response when it is too large

I have home-grown CalDAV implementation which normally works fine, but with one problem. There are clients with hundreds calendars which are synchronized over mobile network. Each time iCalendar ask PROPFIND with depth=1 my server must answer with…
Andrew
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VoIP app don't maintain connection in 3G

Currently I'm developing a VoIP application. In wifi connection keeps me perfectamente. The problem is when I use 3g. After about 6 minutes in the background, and VoIP socket doesn't receive any call. But apparently it's connected. The problem isn't…
dcruz
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Webservice call not working on 3G on Android 4.1.2 Devices

I developed an application which calls a webservice through Wi-Fi and if Wi-Fi is not availabel then it switches to 3G. The problem is , webservice call is working on Wi-Fi but not working on 3G on Android 4.1.2 Devices. I browsed the webservice on…
Hammad Shahid
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