BitChat relies on Bluetooth mesh networking, where each device transmits messages and relays them across nearby peers to maintain connectivity without internet.

Quotes that support claims

Bitchat is a radical change in the traditional messaging applications as it uses Bluetooth low-energy mesh networks to communicate peer-to-peer. The system develops self-organizing networks in which any device acts as a client and a peripheral, and allows automatic relaying of messages among several devices.

Announced on July 7 via a post on X, BitChat operates over Bluetooth Low Energy mesh networks, meaning it allows nearby devices to form a self-organizing network without relying on servers or cell towers. Short-range Bluetooth allows messages to move between devices, with each device serving as a sender and a relay.