What would happen if every country lost internet for one day?

A one-day global internet outage would cause major disruption, but not a permanent collapse.

What would happen:

• Payments and banking: card payments, mobile wallets, online banking, and some ATMs would fail or slow. Cash would matter a lot more.
• Travel and shipping: flights, airport systems, delivery tracking, and logistics would face delays or cancellations.
• Healthcare and utilities: power and water would likely keep running, but monitoring, coordination, cloud records, and e-prescribing would be harder.
• Communication: email, messaging, social media, and video calls would disappear. Phone networks might still work, but congestion would be severe.

Likely effects: confusion, rumor spread, panic buying, business interruptions, and backlogs when systems come back online.

After 24 hours: services would reconnect, but there would be a surge of traffic and a cleanup period for missed payments, messages, and logistics.

Bottom line: it would be a short, serious crisis that shows how dependent modern life is on constant connectivity.