Building Phone Agents via Hardware-Level Interaction
Alookaparatha9144 · reddit · 2026-07-13
The author proposes a ADB-free automation solution for phones/tablets: replacing system-level controls with hardware-level interactions.
Core Concept
- Uses a cheap RV1106 development board (around 10 USD)
- Captures the phone screen output via HDMI
- Runs LLM logic locally
- Disguises the device as a USB HID to physically "touch" the screen
Key Features
- No ADB, root, or jailbreak required
- OS-agnostic: Ignores the underlying OS, relying only on screen visuals to determine clicks
- Highly resilient to UI updates: changing app interfaces won't necessarily break the script
Current Limitations
- The main bottleneck is the latency of the ReAct loop
- The author questions if this is "over-engineering," but believes the flexibility is a long-term advantage
The post mentions a GitHub demo is available, and the author welcomes feedback on this approach.
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