IntactPhone vs Kaymera Smartphone: Side-by-Side Comparison (2026)

IntactPhone: Security-hardened Android smartphone with encrypted comms and MDM. built by IS4 security s.r.o.. Core capabilities include Custom hardened OS (IntactOS) based on Android source code, free of bloatware and carrier bindings, Secured bootloader with full source code audit access, Encrypted VoIP calls via ZRTP protocol over 2G, 3G, and LTE networks..

Kaymera Smartphone: Hardened encrypted smartphone with custom OS for enterprise mobile security. built by Kaymera. Core capabilities include Custom-built OS on high-end Google Pixel hardware, End-to-end encryption for calls, messages, files, and location, Chameleon Mode: hidden secondary account on the same device for data compartmentalization..

Both serve the Mobile Threat Defense market but differ in approach, feature depth, and target audience.

IntactPhone differentiates with Custom hardened OS (IntactOS) based on Android source code, free of bloatware and carrier bindings, Secured bootloader with full source code audit access, Encrypted VoIP calls via ZRTP protocol over 2G, 3G, and LTE networks. Kaymera Smartphone differentiates with Custom-built OS on high-end Google Pixel hardware, End-to-end encryption for calls, messages, files, and location, Chameleon Mode: hidden secondary account on the same device for data compartmentalization.

IntactPhone is developed by IS4 security s.r.o.. Kaymera Smartphone is developed by Kaymera. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

IntactPhone and Kaymera Smartphone serve similar Mobile Threat Defense use cases: both are Mobile Threat Defense tools. Review the feature comparison above to determine which fits your requirements.