usim | A Cortex-M0 simulator written in C

I am facing an error while I am trying to build my project using cmake.
I manually downloaded and install gtest on my pc (i.e. gtest header files are available in /usr/include) and libs such as gtest, gtest_main in /usr/lib)

Below is the code of my projects main function. (lte_softmodem_test.cpp)

I'm trying to get a PyCom FiPy board working with LTE network connection. I have a hologram sim card. I am using two pieces of code. One is from the PyCom docs the other is from code I found on the PyCom forum for debugging LTE.

I have written an applet on a sim card and successfully installed it on my sim. Now I want to send/receive APDUs to my sim card applet using an android application.

Some libraries (e.g. Seek) need rooted devices and do the task but I don't want to root devices. Is there any android libraries to interface my applet? All I have found is applications to use NFC or Bluetooth to send or receive APDUs to contactless cards, but I need to interface contact sims inserted to mobile sim card slot.

These are all applets existing on my USIM (output of GPShell list function):

I am trying to interface an applet in my USIM and an Android application.

I know that I have to install ARA-M applet on USIM in order to check access controls and submit my application-AID as a rule to communicate.

I checked this link and installed it on my sim, but I cannot communicate with this applet, all samples are using GlobalPlatformPro. when I run a commands like gp.exe --list, it returns 0x57 from ScardTransmit function which means ERROR_INVALID_PARAMETER and I don't know how to fix it.

Now I have 2 questions:

1) How can I fix GlobalPlatformPro error in order to run ARA-M samples?

2) How can I find standard commands for this applet (some sample APDUs to communicate and add access control rules)?

Thank you for helping.

I trying to save their phone numbers after checking permissions and USIM state.

In onCreate() methods, Initialized global variable TelephonyManager.

I Want to write a javacard applet for SIM-Card (USIM) to encrypt and decrypt SMS for specific number. i don't want to install any application on mobile phone and SIM-card applet has to detect the message is belong to specific number and encrypt or decrypt it. Can i write such javacard applet by SIM toolkit package or anything else to do this process technically?

I am trying to iterate over a Temporary Table inside of a Function, where I want to make an Update on every row.

The Temporary Table should hold all the user ID's that are getting out of the query. After that, for every Single User it should be checked, if the percentage of the transactions with attributes is smaller than 50% of all transactions.

In the end, the account field master_segments should be updated.

My Code looks like that:

I do have a question about the division of 2 count statements below, which give me the error underneath.

Other than exchanging APDU with the USIM card, how can I access the USIM's file management or perform some operations on the USIM (file deletion, update, and deactivation mainly) ?

Thank you for your insights!