This document describes a project to create a virtual SIM card that allows a mobile phone to use multiple SIM cards. The objectives are to allow a regular mobile phone to support multiple SIM cards without needing additional hardware. The system was designed and developed using RUP methodology, with class, sequence, and use case diagrams. It includes a microcontroller to interact with the mobile phone and a software driver to simulate SIM card functionality. The project was implemented in phases, including developing the SIM card driver, Android application, and a SIM card reader for testing. A GSM simulator was also created to demonstrate the virtual SIM card concept without needing real subscriber authentication keys.

1. Ain Shams University Faculty of Computer and Information Science Virtual SIM Card

2. Team WorkSupervisors:PROF.Dr. Mohamed Hashem Dr. KhaledElbhansy T.A. Mahmoud Fayez

3. AgendaProblem DefinitionObjectivesScientific BackgroundSystem Analysis use case diagram.

4. System Sequence diagram

5. System Design

6. Class Diagram

7. Sequence Diagram

8. System ArchitectureDevelopment Tools and PlatformsImplementation phasesSteps to use Virtual SIM CardReality

9. GSM Simulation

10. Demo

11. References Problem DefinitionMobile Users wants to Use More Than One SIM Card

12. Use one mobile with multiple SIM cardProblem DefinitionThe mobile users try achieving their goal by:Two optionsUse more than one Mobile device.

13. ContinueExpensiveUse more than one mobile deviceNot suitable

14. ContinueAt Most Three SIM Card Use one mobile with multiple SIM cardHigher quality ,higher cost Lower quality ,lower cost

15. AgendaProblem DefinitionObjectivesScientific BackgroundSystem Analysis use case diagram.

16. System Sequence diagram

17. System Design

18. Class Diagram

19. Sequence Diagram

20. System ArchitectureDevelopment Tools and PlatformsImplementation phasesSteps to use Virtual SIM CardReality

21. GSM Simulation

22. Demo

23. ReferencesObjectivesRegular mobile phone support multi SIM cardLead toVirtual SIM Card ConceptVirtual SIM CardOne Regular Mobile

24. AgendaProblem DefinitionObjectivesScientific BackgroundSystem Analysis use case diagram.

25. System Sequence diagram

26. System Design

27. Class Diagram

28. Sequence Diagram

29. System ArchitectureDevelopment Tools and PlatformsImplementation phasesSteps to use Virtual SIM CardReality

30. GSM Simulation

31. Demo

32. ReferencesScientific BackgroundWhat Is the SIM Card ?The SIM, Subscriber Identity Module, is a smart microprocessor chip for mobile phones used in all GSM and 3G networks as well as other digital telephone networks

33. ContinueWhy using SIM cards in GSM networks? It Identifies the Subscriber. Subscriber information, such as the IMSI (International Mobile Subscriber Identity), is stored in the SIM

34. Access and Security: Originally designed to allow access to mobile phone networks, it authenticates the subscriber and holds the GSM network authentication Keys and Algorithms.

35. SIM card can be used to store user-defined information such as phonebook entries SMS, and Subscriber related informationContinueSIM Card Architecture8 bit CPU16 K ROM256 bytes RAM4K EEPROM

36. ContinueSIM Card Memory Structure

37. ContinueSIM Card Tasksauthentication algorithm (A3).

38. cipher key generation algorithm (A8).

39. Encryption and Decryption.

40. Data storage.AgendaProblem DefinitionObjectivesScientific BackgroundSystem Analysis use case diagram.

41. System Sequence diagram

42. System Design

43. Class Diagram