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Offline-First Design for Field Teams

Real estate sales executives and telecallers frequently operate in basements, high-rise construction towers, or remote development corridors where cellular internet connectivity is degraded or unavailable. If an application requires constant real-time HTTP requests to log call outcomes or maintain calling momentum, field productivity stalls. BrokerOS implements an offline-first architecture across all mission-critical workflows: phone dialing, disposition logging, audio caching, and data reconciliation.

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Offline Feature Support Matrix

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Automatic Audio Sync & Exponential Backoff

When a device goes offline during an active telecalling session:
  1. Local Recording Retention: Audio recordings remain safely stored inside the device’s scoped Storage Access Framework directory.
  2. WorkManager Job Persistence: CallUploadWorker.kt jobs are queued inside Android’s internal SQLite database managed by the Jetpack WorkManager framework.
  3. Automatic Reconnection Trigger: WorkManager registers a network constraint (NetworkType.CONNECTED). The moment Android detects an active internet connection (Wi-Fi or cellular data), the system automatically triggers the pending upload jobs.
  4. Exponential Backoff: If network requests encounter timeouts or server unavailability, WorkManager applies exponential backoff retries (e.g., 30s, 60s, 2m, 5m) until data transfer succeeds.
  5. Zero Data Loss: Even if the device battery dies or the phone reboots, WorkManager persists pending upload jobs across device restarts.

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Best Practices for Field Deployment

To maximize productivity in low-connectivity areas:
1

Cache Queue During Morning Briefing

Open the BrokerOS mobile app on high-speed office Wi-Fi before traveling into the field. This pre-caches the day’s lead queue, contact profiles, and project collateral.
2

Ensure Recording Storage Permissions Are Active

Verify that the Storage Access Framework (SAF) folder permission is configured in settings. This ensures all calls made in dead zones accumulate safely on the local disk.
3

Avoid Force-Closing the App

Allow BrokerOS to remain in Android’s background app stack so that background telephony receivers and WorkManager tasks execute without system interruption.