3g

问题 I'm writing a travel guide related app that will download large databases (60meg) potentially overseas, with the reachability code I can tell when a host is reachable via wifi or 3g BUT I'm worried that if for some reason the wifi connection breaks for a minute or so as some DSL connections are likely to do on occasion the iphone will switch transparently to 3G and without realising I could be racking up someones phone bill with overseas data charges! So I'm wondering if anyone has any

问题 I'm running Ubuntu 11.04 and a ZTE 3G modem. The modem is dialed with WvDial When the modem is not in use by WvDial I can send AT commands to the modem, and get information like signal strength: AT+ZCSQ +ZCSQ: 1, -87 OK But when WvDial is using the modem, /dev/ttyUSB0 is locked and I can't query it. Am I missing something obvious? Is there any way I can configure the modem, WvDial , or pyserial so I can send AT commands to the modem while it's connected? 回答1: Ah. Apparently this modem exposes

问题 I'm running Ubuntu 11.04 and a ZTE 3G modem. The modem is dialed with WvDial When the modem is not in use by WvDial I can send AT commands to the modem, and get information like signal strength: AT+ZCSQ +ZCSQ: 1, -87 OK But when WvDial is using the modem, /dev/ttyUSB0 is locked and I can't query it. Am I missing something obvious? Is there any way I can configure the modem, WvDial , or pyserial so I can send AT commands to the modem while it's connected? 回答1: Ah. Apparently this modem exposes

问题 I am trying to get the signal strength in dBm for the carrier, wifi, 3g, and 4g. I am currently using this code to get the carrier's and wifi from the status bar and I would like to know if there is another way or a better way? Also how could I get it for 3g and 4g? UIApplication *app = [UIApplication sharedApplication]; NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews]; NSString *dataNetworkItemView = nil; NSString *wifiNetworkItemView = nil; for

问题 I am specifically asking about javascript on a mobile webpage, not an objective-c application. Is there something like Apple Reachability for javascript so I can tell when Edge, 3G or Wifi connection is made or changed? 回答1: Not unless browsers start giving this information away through the DOM which, currently, they don't. There is a navigator javascript objects which holds many things but not what you're looking for. I've also read in the news recently that some cellular carrier was adding

问题 I need to detect in android if there is any connection Wifi or 3G ( or 3G+ ) or EDGE in android. When there is an connection wifi or 3G I can send photos to server, and when is only a connection EDGE to not send them to server. I saw that wifi connectivity can be detected with ConnectivityManager.TYPE_WIFI and with ConnectivityManager.TYPE_MOBILE and TelephonyManager.NETWORK_TYPE_EDGE can be detected EDGE connection. But how can be detected 3G or 3G+? 回答1: https://gist.github.com/emil2k

问题 I have recently finished my website and uploaded code to server. It is working perfectly when connected to Wi-fi or broadband connection. But When i am connecting the site using 3G or LTE it's showing some default page. Exact domain is not loading. Still not able to understand why it's happening. My Domain name: http://www.jockdrive.com Please help me with your suggestions. 回答1: There might be cached data stored on the server of the Interner Service provider. Normally, ISPs clear cached data

问题 I have a app in which user can record video and an api to upload recorded video to azure. I am using below code HttpClientHandler handler = new HttpClientHandler(); handler.MaxRequestContentBufferSize = int.MaxValue; using (HttpClient httpClient = new HttpClient(handler) { MaxResponseContentBufferSize = int.MaxValue }) { MultipartFormDataContent content = new MultipartFormDataContent(); content.Add(new ByteArrayContent(chunks), "file", fileName); HttpResponseMessage response = null; response

问题 I see this thread but it could not help me much. 回答1: Use ConnectivityManager and getActiveNetworkInfo() . 来源： https://stackoverflow.com/questions/3642267/android-how-can-we-know-the-current-connection-type-ex-wifi-3g-2g-progr