4YFN is the startup half of MWC — co-located with the world's largest mobile/connectivity show, drawing ~105k MWC attendees with 1,000+ exhibiting startups, 300+ speakers and a dense investor floor. Reason founders fly in: the side-event ecosystem that builds up across Barcelona during MWC week (investor breakfasts, embassy dinners, telco-corp pitch nights) is bigger than the show itself. Worth it if you're in mobile, telco, IoT, deep-tech or just want a high-density VC week in Europe.

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