Buying Guide
Used Phone Quality Testing – How to Test Before Buying in Bangladesh
Used Phone Quality Testing – How to Test Before Buying in Bangladesh
Testing a used phone thoroughly before buying is essential to avoid scams and hidden issues. This guide provides a complete quality testing checklist for used phones in Bangladesh.
Key Takeaway: Test everything: IMEI, battery health, display, cameras, speakers, microphone, buttons, Wi-Fi, Bluetooth, charging port, and account lock before paying .
Complete Quality Testing Checklist
1. IMEI Verification
Dial *#06# and note the IMEI. Match with box and invoice. Verify with BTRC NEIR system .
2. Battery Health Test
iPhone: Settings > Battery > Battery Health (85%+ recommended)
Android: Use AccuBattery app or manufacturer diagnostics
3. Display Test
- Check for dead pixels (use test images)
- Check for burn-in (solid colors)
- Check for green lines (Samsung AMOLED)
- Test touch sensitivity
- Check brightness and auto-brightness
4. Camera Test
- Test all lenses (main, ultra-wide, telephoto)
- Test flash
- Test video recording at all resolutions
- Check image quality and focus
5. Speakers and Microphone
- Play audio at max volume
- Record audio and test call quality
- Test speakerphone during a call
6. Buttons and Ports
- Volume up/down buttons
- Power button
- Silent/action button
- Charging port (test with multiple chargers)
- Headphone jack (if available)
7. Connectivity Tests
- Wi-Fi: Connect to a network and test speed
- Bluetooth: Connect to another device
- GPS: Test location accuracy
- NFC: Test if available
8. Fingerprint and Face ID
- Test fingerprint sensor multiple times
- Test Face ID with different angles
9. Water Damage Check
- Check LDI indicator in SIM tray (red/pink = damage)
- Look for corrosion on charging port
- Check for condensation under camera lens
10. Account Lock Verification
- iPhone: "Find My iPhone" must be off
- Android: Google account must be signed out
- Samsung: Samsung account must be signed out
11. Software Check
- Check for jailbreak/root
- Check for carrier lock
- Check software version
- Check for unusual apps
12. Accessories Check
- Original charger and cable
- Original box
- Original invoice
- Any extra accessories
Quality Testing Scorecard
| Test Item | Pass | Fail | Score |
|---|---|---|---|
| IMEI Verification | ✅ | ❌ | /10 |
| Battery Health | ✅ | ❌ | /10 |
| Display Quality | ✅ | ❌ | /10 |
| Camera Function | ✅ | ❌ | /10 |
| Speakers & Mic | ✅ | ❌ | /10 |
| Buttons & Ports | ✅ | ❌ | /10 |
| Connectivity | ✅ | ❌ | /10 |
| Biometrics | ✅ | ❌ | /10 |
| Water Damage | ✅ | ❌ | /10 |
| Account Lock | ✅ | ❌ | /10 |
Testing Apps to Use
- IMEI.info: IMEI verification
- AccuBattery: Battery health
- Screen Test: Display testing
- Phone Doctor Plus: Full hardware test
- Test Your Phone: Comprehensive diagnostic
Where to Buy Tested Used Phones
mobile.com.bd offers a trusted marketplace with verified used phones.
Buy with Confidence
Browse the complete used phone marketplace at mobile.com.bd and test before you buy.
