Contact person: Business Client

Phone:Show

Email:Show

Location: DELHI, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Android Call Recording App with Secure Server Sync

Objective: Independent, Tamper-Proof Call Recording & Monitoring System

1. Project Overview

This project aims to develop an enterprise-grade Android application that automatically records all incoming and outgoing calls, securely uploads recordings to a central server, and prevents employees from stopping, modifying, or deleting recordings.

The system is designed for sales, support, and compliance monitoring, especially for distributed teams across India.

2. Key Objectives

Automatic call recording (incoming & outgoing)

No manual control by employees (no pause/stop/delete)

Background operation (silent & invisible)

Secure upload to server

Centralized admin access

Scalable for 100s–1000s of users

Legally compliant & auditable

3. System Architecture (High Level)
Android Device
├─ Call Listener (Telephony API)
├─ Call Recording Service (Foreground + Background)
├─ Local Encrypted Storage (Temporary)
├─ Auto Upload Service
└─ Device Lockdown (MDM / Admin)

↓ HTTPS (TLS)

Cloud / On-Prem Server
├─ REST API (Auth + Upload)
├─ Audio Storage (Encrypted)
├─ Database (Metadata)
├─ Admin Web Dashboard
└─ AI Processing (Optional)

4. Android Application – Detailed Scope
4.1 Call Recording Functionality

Recording Mode

Records both incoming and outgoing calls

Starts automatically when call connects

Stops only when call disconnects

No UI controls for employee

Technical Approach

Android Call State Listener

Foreground Service (mandatory from Android 9+)

Audio Source:

VOICE_COMMUNICATION

VOICE_CALL (device dependent)

Codec:

AAC / AMR-WB / OPUS

File Format:

.m4a or .wav

⚠️ Device compatibility testing required (Samsung, Xiaomi, Vivo, Oppo)

4.2 No Employee Interference (Critical Requirement)

Employee CANNOT:

Stop recording

Pause recording

Delete recordings

Disable permissions

Uninstall app

Implementation Methods

Device Owner / MDM Mode

App installed as system-level app

Permissions auto-granted

Admin Lock

App hidden from launcher

App protected with admin PIN

Auto-Restart Services

Watchdog service restarts recorder if killed

Permission Monitoring

App checks permissions every few seconds

Alerts server if revoked

Tamper Detection

Detects root, app cloning, VPN misuse

4.3 Background & Stealth Operation

No visible UI during calls

Silent recording (no beep)

Runs on boot (BOOT_COMPLETED)

Battery-optimized recording

Handles:

Phone restart

Network loss

App crash recovery

5. Data Captured Per Call
Field Description
Employee ID Unique device/user
Caller Number Incoming/Outgoing
Call Type Incoming / Outgoing
Call Start Time Timestamp
Call End Time Timestamp
Duration Seconds
Recording File Encrypted
Device Info Model, Android version
Location (Optional) If enabled
6. Local Storage Policy

Recordings stored temporarily

AES-256 encrypted on device

Auto-delete after:

Successful upload OR

Max retention (e.g., 7 days)

Storage usage cap (e.g., 2GB)

7. Server-Side System
7.1 Backend API

Technology Stack (Suggested)

Backend: Node.js / Laravel / FastAPI

Database: PostgreSQL / MongoDB

Storage:

AWS S3

Azure Blob

On-prem NAS

Auth: JWT + Device Token

Core APIs

Device registration

Recording upload

Heartbeat (device alive)

Permission status reporting

User & role management

7.2 Audio Storage & Security

Encrypted at rest (AES-256)

Encrypted in transit (HTTPS / TLS)

File naming with UUID

Access only via admin roles

Audit logs for every playback/download

8. Admin Web Dashboard
8.1 Features

Employee / Device list

Call logs with filters:

Date

Employee

Phone number

Audio playback (streaming)

Download permissions (role-based)

Call duration & productivity reports

Alerts:

App disabled

No uploads

Permissions revoked

8.2 Roles & Access
Role Access
Super Admin Full
Manager Team calls
Auditor Listen only
HR Reports


10. Legal & Compliance (India)

Important-

Inform employees in appointment letter / policy

Use for official calls only

Comply with:

IT Act, 2000

Company internal compliance policy

Add consent notice during onboarding

11. Deployment Models
Option 1: Company-Owned Phones (Recommended)

Full control

Device Owner mode

Zero employee interference

Option 2: BYOD (Not Recommended)

Limited control

Higher legal risk

OS restrictions

12. Development Phases & Timeline
Phase Duration
Requirement Finalization 1 week
Android App Development 5–6 weeks
Backend + Dashboard 4–5 weeks
Device Testing 2 weeks
Pilot Deployment 2 weeks
Production Rollout 1 week

Total: ~12–14 weeks

13. Estimated Cost (Indicative)
Component Cost (INR)
Android App ₹4–6 Lakh
Backend & Dashboard ₹3–5 Lakh
Testing & Deployment ₹1–2 Lakh
AI Features (Optional) ₹3–6 Lakh
14. Deliverables

Android APK / AAB

Backend source code

Web dashboard

API documentation

Deployment guide

Admin & user manuals

15. Future Scalability

Multi-company support

WhatsApp call recording (device dependent)

CRM integration

Live call monitoring (legal dependent)" (client-provided description)