2Number by BPMobile positions itself as a virtual phone number solution that eliminates the need for physical SIM cards while providing secondary communication capabilities. The iOS application serves users requiring temporary or permanent additional numbers for business, personal privacy, or international communication needs. The core functionality centers around virtual number provisioning with area code selection, call forwarding that masks the user's primary number, and text messaging capabilities. International calling features operate through a credit-based system where users purchase coins to make overseas calls at varying rates depending on the destination. The app integrates with the device's native dialer and messaging systems while maintaining separation between primary and secondary number activities. User experience demonstrates a straightforward interface with number selection, contact management, and call history organization. Real-world usage patterns show particular utility for online marketplace transactions, temporary business communications, and situations requiring number privacy without revealing personal contact information. The app maintains call quality through VoIP technology that adapts to available network conditions. User feedback reveals mixed experiences with the credit system and subscription management. Positive reviews from users like SBaybee29 (2025-07-24) note reliable reception compared to alternatives, while Christopher -BHP (2025-06-27) praises affordability and ease of use. However, multiple reviews including BBBBB6969420 (2025-08-05) report billing issues with trial subscriptions and automatic charges, indicating potential transparency concerns in the payment model. The application demonstrates strength in its core proposition of SIM-free secondary numbers with functional international capabilities. Limitations appear in the credit deduction system that some users find unclear and reported billing practices that warrant caution. Ideal use cases include short-term number requirements, international travelers needing temporary local numbers, and users seeking separation between personal and professional communications without device switching.