GitHub · by AllMySlop

Watch eSIM Helper: writing eSIMs to a Pixel Watch via a hidden companion-app route

Codex with REA found a hidden eSIM download destination in the Google Pixel Watch companion APK; the author built a standalone Android app that scans a QR code and deep-links to that destination.

● Android / APKBlog posts
Smart AC app replacement built after inspecting the official APK with REA and Claude Code
Kamlesh Bachani used REA with Claude Code to inspect a smart AC's official APK and network payloads, then built a custom app that talks directly to the AC and shows the room temperature.
Target
Smart AC official Android APK
Agent
Claude Code
Protocol analysis time
A couple of hours
Total build time
One day
Kamlesh Bachani
lnkd.in

Watch eSIM Helper: writing eSIMs to a Pixel Watch via a hidden companion-app route

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Smart AC app replacement built after inspecting the official APK with REA and Claude Code