Reliability
Protecting numbers and message history
Implementation scenario · This is an example implementation, not a story about a named customer. Results depend on your integration, phone, network and carrier.
AI-generated scenario illustrationThe problem
SMS history contains phone numbers and potentially personal information. Access should match an employee’s actual duties.
Build the solution
Use separate integration keys with minimum permissions. Restrict CRM history by company and role. Keep full message text out of shared technical logs. Define retention and deletion explicitly in your process.
Check before launch
The service stores history on its server; it does not promise automatic deletion immediately after delivery. Review backups, exports and their access controls.
How SIM Bridge works
Your backend creates a job through the API, and the connected Android sends SMS through your SIM. Store the message ID in your system and receive status changes through a webhook. A queued job is not yet a sent message: the phone must be available and the carrier must accept it.
Start with your own test number. Check Android permissions, screen-off connectivity, retries with the same Idempotency-Key, and unknown-status handling. Keep API keys out of browser code and public repositories.
