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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 do you programmatically change between 3G and 4G on Android?

I've looked into it some and I'm thinking it's not possible, but to think that something isn't possible on the Android platform is blasphemous. The idea is to create a widget that toggles between 3G and 4G to save battery without having to enter the…
Art Vandelay
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Android - native sockets not removing 3G-sleep-mode on first attempt

I have a really annoying problem. What happens is I have an application which is using native sockets to send data over TCP. When I first launch my application and send data over the sockets, nothing gets through. However if I then quit the process…
KaiserJohaan
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Create Network Access Point Name with code,

I want to create APN by code, is there any support in Android SDK, i have tried a lot but not succeed,I found some info related to this http://blogs.msdn.com/b/zhengpei/archive/2009/10/13/managing-apn-data-in-google-android.aspx i made a class…
Sandeep
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Do Android Phones have a MAC address when connected to 3G?

I was wondering if Android phones have a MAC address when connected to the internet over 3G? I'm assuming they do, so I guess my real question is whether or not there is anyway of accessing it? I haven't found anything from looking through the APIs…
user631063
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Exception reading Wifi/3G State

Hi I have the following code that reads Network/Wifi state: public String getMacAddress() { WifiManager wm = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); return wm.getConnectionInfo().getMacAddress(); } This…
Marcos Vasconcelos
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Realtime multiplayer game over mobile network?

I just discovered that my phone is behind a symmetric udp firewall, which simply means that udp traffic is not possible. My 3g provider is t-mobile which is one of the biggest in my country. I suspect that many more mobile 3g providers have udp…
T. Akhayo
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Is peer-to-peer communication over 3G/4G possible for smart phones?

I'm trying to write an app that transfers data from one android device to another - but the devices are most likely located in different parts of the city, state, or country. (The straight forward way would be to have a central server (or any type…
pseudosudo
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Android - Connectivity Questions

I have a couple of questions about connectivity on Android, if anyone has any insight it would be great. 1) What is the default when an application wants to wirelessly connect? Is it wlan? And if wlan is switched off or there is no access…
Donal Rafferty
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Why 3G network NAT cannot be bypassed?

I am developing a p2p chat application which works fine over DSL two different NATs, but when it comes to 3G USB internet connection it fails. I find out that its not possible to bypass NAT for 3g networks and the known p2p applications like Skype…
rafay
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Trust anchor for certificate path not found when using over 3g but works fine over WiFi

My android project is using api 15. I am connecting to a server over https using the HttpsURLConnection class. Everything works just fine over WiFi but if I turn off WiFi and run over 3g I get the following : javax.net.ssl.SSLHandshakeException:…
Horrendo
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Determine if LTE is turned on?

I am trying to write a widget so I can enable/disable LTE on my Verizon Galaxy Nexus without going deep into the settings menu to do so. However, I have yet to figure out how to determine if LTE is actually turned on. I can determine if my phone…
smccloud
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Can wifi and 3G work at the same time on Android?

I am doing a project which needs the Android tablet to communicate with a local network device via Wifi(tcp/ip) and at the same time send data to server via 3G(http request). The Android tablet receives data from local network device every 1…
Fly_Over_Android
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Is it possible to detect LTE connection using iOS SDK?

I'm using the reachability API to detect my current connection, but I can only distinguish between WIFI and 3G. I get the following flags: LTE:…
Gilad Novik
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Why do Android doesn't have a mac address for 3g when iOS does?

I know this maybe a stupid question but maybe I'm just confused with the concept of mac address. As far as I know, each device has its own mac address. For example, a wiFi interface has its own mac address. If all devices has its own mac address,…
Arci
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How make use of the Voice API to make calls using Huawei 3g Modems?

Some Huawei 3g modems like mine (E1752) has ability to make and receive calls. I believe onboard there is PCM channel that can be used while making or receiving the calls but I do not have any more information on that. I am using their app called…
Kunal Deo
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