Starting on API Level 22, there is native support in Android for Dual-SIM devices. At the center of the APIs, there is SubscriptionInfo.getSubscriptionId(). Using these IDs, you can retrieve SmsMa...

Sometimes we encounter some devices which have two or more SIM cards. So my question is: How can I determine the number of SIM cards on the device? Actually, I am developing a field test app and ...

When a new SIM (never used) is inserted in a new smartphone (never used), smartphone seems to set a right APN without any manual settings. Is there a global table (inside smartphone) with associati...

I was reading information on this link in regards to signing an application with carrier privileges. I am aware of how to sign an application using a keystore for production releases, but how do I...

Is there a way that I can access the other sim in my android? I have an android Cherry Mobile Orbit which is a dual sim android phone. I want to develop an SMS application for my phone, but only th...

As you may know, OTA messages or Over The Air messages, are specially crafted binary SMS messages which are used by mobile operators to send APDU commands to the SIM cards for managements purposes....

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. I...

There are several questions about accessing dual SIM features through the Android SDK, all of which are answered with brief statements that such features are unsupported in Android. In spite of th...

I want to use USSD dialog which comes after dialing any USSD code say *123# which asks user to enter option number to perform specific task(s) depending upon sim card vendors. I need to interact wi...

I have an Android phone with 2 SIM card and I want to send sms using Sim1 or Sim2.By default the message is sent from sim1. But i want to send sms from sim2. Is it possible to setting to send sms u...

I developed a Java Card applet in Eclipse and obtained a cap file. Then i used jcManager – Java Secure Card Manager to load that file to my smart cards. I have two type of smart cards: Contact, ...

I am using the code TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE); mPhoneNumber = tMgr.getLine1Number(); to get the phone no programatically ...

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...

I want to detect whether two SIM cards are there in my dual-SIM android phone programmatically. I found one API (TelephonyManager.getSIMState()), but it is for normal single-SIM phones. Are there a...

I wonder if it's possible to access to the SIM card with an Android Application

For an app that I am currently developing we want to read data from the SIM card of the user, which works fine. We want to make it possible that the user can switch the SIM card while the app is ru...

I have developed a WAP application and I would like to get the MSISDN of the users that visit my site. My operator has white listed my WAP application. I am getting MSISDN successfully on couple ...

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 ...

When we run a web server in a java card 3.0 compatible card, how can we request that server or rather at which IP address do we request that server. Further more can an android app request and get ...

Is there any method, function or property in iOS programming through which we can identify whether the SIM is prepaid or postpaid? Can we use network information in any way to distinguish betweem ...

I have several question about MSISDNs. I understand: MSISDN is the basically the phone number It is not IMSI What i need to know further are: Is MSISDN number burnt (stored) in SIM Card? If i...

I was already worked with smart cards and I am familiar with APDU commands (that are defined in ISO/IEC 7816 and Global Platform specifications). Now I want to know if there is any way to send an...

My goal is to test VoLTE (voice-over-LTE) settings on Android 6.0, and to do so I have to use CarrierConfig & TelephonyManager APIs. These APIs requires Carrier authentication-level, it means...

I have a smart card with the following ATR: ATR = 3B 9E 94 80 1F 42 80 31 00 73 BE 21 10 66 54 59 53 04 4C 25 CF. Based on the output of atr-parse.appspot.com I found that it is a MCI (Mobile Co...

I want to know user mobile number in Android. I used this code but I'm not getting number. TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); String n = tm.getL...