Caleb Vance

Caleb Vance is a telecommunications engineer and technical strategist with over five years of experience in mobile network infrastructure and SIM technology. He earned his Master of Science in Telecommunication Engineering from the University of Nebraska–Lincoln in 2021, where he specialized in high-frequency signal processing and next-generation cellular protocols. Currently, Caleb serves as a Technical Audit Officer at T-Mobile, overseeing network integrity and hardware compliance within the United States. His professional background in auditing one of the world's largest carriers gives him a unique, "behind-the-curtain" perspective on how eSIMs, physical SIM cards, and 5G networks actually function. As the lead technical writer for Teksimo.blog, Caleb translates complex telecom standards into actionable guides for everyday users. His mission is to provide rigorous, evidence-based insights into the evolving world of mobile connectivity, ensuring readers stay connected with security and efficiency.