Offline communication guides
Articles about messaging without internet, Bluetooth, Wi-Fi Direct, mesh networks and setting up offChat on Android.
- How to send messages from a phone without the internet
Practical Android guide: Bluetooth, Wi-Fi Direct, P2P mesh and the KingFy OffChat module for nearby messaging without mobile data.
- How Bluetooth communication between devices works
Bluetooth is a short-range radio. Here is what that means for local messaging and for offChat.
- Wi-Fi Direct: what it is and how it works
Wi-Fi Direct links two Androids over the Wi-Fi radio with no router. See how it differs from hotspot, Bluetooth and KingFy OffChat.
- P2P mesh networks: ideas, benefits and limits
P2P mesh on phones: how Bluetooth/Wi-Fi Direct relay works in KingFy OffChat, when it helps and what it does not promise.
- How to communicate on trips with limited internet
Trails, roads and campsites: what a group in the same place can still do when carrier signal fails.
- Bluetooth vs Wi-Fi Direct vs mesh networking
Three different local-communication layers. None of them is the internet and none replaces the others.
- Offline messaging apps: how to choose
Verifiable criteria for an offline messaging app: platform, radios, mesh, privacy and public proof.
- How to set up offChat on Android
Step by step: install KingFy, open the KingFy OffChat module, enable Bluetooth/Wi-Fi Direct and chat nearby.
- offChat is not the same as other OffChat apps
offChat (offchat.com.br): module built in the KingFy ecosystem for ~3 years. Official disambiguation vs same-named apps.