v1.0 — Tether Watchdog

Tether Watchdog 1.0

First public release — USB tethering optimization and monitoring.

Tethering optimization (root)

• Mobile data bounce + DNS flush
• TCP tuning (window scaling, larger buffers, try BBR)
• IP forwarding enabled
• Force RNDIS gadget mode
• USB iface MTU 1440
• TTL 64 mangle (some carrier tether quirks)
• Prefer cellular as default route (not Wi‑Fi)
• Auto-recover when USB reconnects or RNDIS iface is down

Monitoring

• USB tether status and link tier when available
• Mobile radio: 4G / 4G+ / 5G, RSRP, step-down events
• Drop context: tethered · idle (no USB) · after reset · cable only
• Optional live rates + light internet probe

Notes

• Non-root: radio + basic tether status only
• Root (Magisk): full optimisations, Auto-recover, Reset
• Not on Play Store — sideload only