The sun sets behind the iconic Sagrada Família, casting long shadows over Barcelona’s streets. Yet, for the tech world, this signals the start of something big. Thousands of journalists, CEOs, and innovators have arrived in the city for MWC 2026 Barcelona, ready to witness the next wave of technology. The buzz is palpable. Rumors swirl about the debut of mass-market holographic 6G calls and the usability of the new transparent smartphone screens.