Photon held a funeral for mobile apps. Now it has $4.5M to help replace them with agents. Photon held a funeral for mobile apps. Now it has $4.5M to help replace them with agents. Sarah Perez October 1, 2026 The startup helps developers build AI agents that work over iMessage, SMS/RCS, email, and other messaging platforms.... Read More Read more about Photon held a funeral for mobile apps. Now it has $4.5M to help replace them with agents.