Product
Suishenhao consists of an Android gateway phone, an overseas web client, and a cloud relay. It extends SMS for your own number—together with incoming-call alerts—to a browser abroad, with message content encrypted.
Architecture
Installed on your gateway phone. It receives real SMS as the default messaging app, sends SMS only from signed commands, and reports incoming-call events through the Android 11 call-screening role. Keys remain in secure system storage.
Handles pairing, verified forwarding of events and commands, idempotency, and state management. It processes only encrypted information and necessary metadata, and cannot read communications.
Decrypts, displays, and replies to SMS locally in the browser, while showing call history, contacts, and a read-only ledger. Private keys remain on the device; login sessions last up to 90 days and can be revoked.
Features
Long messages are split and reassembled automatically while preserving order and original timestamps, with Unicode and emoji support.
Special SMS types are identified and classified for clear handling in the client.
A persistent command table on the phone enforces idempotency, so repeated clicks or offline retries do not send duplicates. Commands include TTL and signatures.
Startup recovery covers the foreground service, role state, pairing, keys, and the local pending queue. Long-duration resilience continues to be improved.
Critical actions such as pairing, commands, and logins are recorded, with traceable event / command IDs and server-signed receipts.
The client adapts to desktop and mobile viewports. During outages, events persist locally and replay in sequence with deduplication and ACKs after recovery.
Planned: Voice answering, recording, and sending are not yet available and will be introduced in a future release.
Try It
Explore sign-up, pairing, and SMS screens directly in the browser—no installation required.