sim-card

问题 I'm currently working on my diploma work. Part of the work includes development of JavaCard applet for regular SIM cards. First option is to use JavaCard2.X API and use APDU commands to communicate with the applet. This might be very tricky as I need to develop client-app for android (which will be communicate with this applet) and that is so far possible only trough special - not so user friendly - API called Seek-for-android . (if I'm wrong, please correct me) However, I also came across

问题 Just any old GSM compatible SIM card (bonus for 3G USIM). I presume I need some hardware? Can anyone recommend something cheap for hobbyist, and something more professional? I presume that there will be full docs of an API with the h/w, so maybe this should be tagged "no-programming-related"? Sorry, if so. Any good URLs or books (I am conversant with the 3GPP standards). I'm not (black hat) hacking, don't worry, just not pleased with the likes of SIM Card Secretary, Data Doctor Recovery, etc,

问题 AT+CPMS? query to a SIM returns +CPMS: "SM",0,60, "SM,0,60,"SM",0,60 OK The total storage is 60 messages maximum, and 0 are currently stored. All messages are stored on the SIM. An existing legacy application fails when trying to populate all 60 message boxes because message box 55 is the last successful write location. When trying to populate the spaces 56-60, the command returns CMS Error 322 which is a memory full error. The text in each SMS is simply "P H" which is 3 ASCII bytes, so each

问题 I wonder what is the value of SIM state returned by TelephonyManager.getSimState() when "airplane mode" is turned on? This seems to be not directly specified anywhere in the SDK specification. Actually I need to get SIM operator code (i.e. MCC+MNC) using getSimOperator() method, but JavaDoc states that to use that method: SIM state must be SIM_STATE_READY UPDATE I tested it under emulator and it returns SIM_STATE_UNKNOWN (which is described by javadoc as a "transition between states") after

问题 I would like to access the SIM menus on an Android phone using STK. I am trying to write an APK that shows the SIM Menus and perform operations on it. However, since the software would be used by users, replacing the OS core modules may not be an option. How can I do this? 回答1: This is, unfortunately, not possible. SimToolkit applications are protected from use by other applications because they could incur charges for the user or alter his connectivity state without his knowledge or consent.

问题 Is it possible to interact with the SIM in windows phone 8 development? I did a bit of research all I could find was that there is no api from Microsoft that allows this, but is there maybe a 3d party app someone knows of? I am trying to check if a SIM has been changed in a windows phone. So in android terms : TelephonyManager tm; String sim = tm.getSimSerialNumber(); Thanx 回答1: No , the Windows Phone SDK does not offer capabilities to interact with the SIM card inserted in the device. 来源：

问题 I'm developing an application for Android that installs stuff on the phone's sim card. What I wan't is for the application to do one last action upon uninstall : remove what's inside the sim card. Which means : I need to do one last action when my APK is uninstalled. Problem : I didn't find any way to do so. (Apart from having a secondary application, that catches the uninstall intent, and does the job, but that's very faaaaar from what I wan't I'm afraid) If anyone has a solution, I'm really

问题 I searched for a question similar to this one, but no luck. I'm writing an app which, in order to correctly authenticate the user, it should ask him to input the correct SIM Card. Is it possible, or will I have to user another PIN just for the app authentication? 回答1: I am not sure if it is possible, but as there are devices out there that have no SIM (think tablets with WLAN only), it may be a better idea to have a different PIN that is not SIM-related. 来源： https://stackoverflow.com

问题 Is there any way in sdk(default) that can handle dual sims? There are many number of android phones available in market which are dual sim. What i want is programmatically change the default sim. Is it possible? 回答1: As of Android 5.1 Multiple-Sim Support has been officially added to the Android SDK! You can access information about the current used sim through the SubscriptionManager class. 来源： https://stackoverflow.com/questions/10382971/dual-sim-android-sdk

问题 Is there any way in sdk(default) that can handle dual sims? There are many number of android phones available in market which are dual sim. What i want is programmatically change the default sim. Is it possible? 回答1: As of Android 5.1 Multiple-Sim Support has been officially added to the Android SDK! You can access information about the current used sim through the SubscriptionManager class. 来源： https://stackoverflow.com/questions/10382971/dual-sim-android-sdk