Condition grading accurately reflects cosmetic wear, battery life, and component originality so buyers know exactly what to expect.
Every pre-loved smartphone, tablet, and laptop listed on Saradeal is subjected to our 40-point technical audit across 6 operational hardware and software groups.
| Hardware Group | Diagnostic Point | Testing Methodology & Pass Criteria |
|---|---|---|
|
🖥️ 1. Display & Touch (8 Test Points) |
#01 Touch Digitizer Grid | Full-screen touch tracking test; zero dead zones across edges and center. |
| #02 Multi-Touch Gestures | 5-finger pinch, zoom, and swipe gesture recognition responsive without lag. | |
| #03 Dead Pixel Scan | Pure Red/Green/Blue/White panel test; zero stuck or dead pixels. | |
| #04 Burn-In / Backlight Bleed | Uniform OLED/LCD lighting with zero ghosting or uneven backlight halos. | |
| #05 Glass Lamination | Zero glass cracks, delamination, or adhesive bubble lifting. | |
| #06 Ambient Auto-Brightness | Light sensor adjusts display illumination smoothly under variable lighting. | |
| #07 TrueTone / Refresh Rate | TrueTone color calibration and 60Hz/120Hz high refresh rate confirmed active. | |
| #08 Bezel Frame Sealing | Display glass firmly sealed to chassis without gaps or lifting. | |
|
🔋 2. Battery & Power (6 Test Points) |
#09 Maximum Capacity % | Battery capacity health certified 80%+ (exact percentage disclosed). |
| #10 Battery Cycle Count | Charging cycle count read via diagnostic firmware to ensure healthy lifespan. | |
| #11 Wired Fast Charging | Type-C / Lightning port draws correct fast-charge wattage without connection drops. | |
| #12 Wireless Qi Induction | Inductive Qi / MagSafe charging coil establishes steady wireless power delivery. | |
| #13 Thermal Stability | Temperature monitored under heavy CPU/GPU load to verify zero overheating. | |
| #14 Power IC Sleep Retention | Standby sleep drain benchmarked (<3% per hour idle consumption). | |
|
📷 3. Cameras & Optics (6 Test Points) |
#15 Primary Rear AF Lens | Sharp optical focus at 1x with rapid phase-detection autofocus. |
| #16 Ultra-Wide (0.5x) Sensor | Wide-angle field of view clear without corner distortion or fogging. | |
| #17 Telephoto Optical Zoom | Optical zoom (3x/5x) maintains sharpness and optical alignment. | |
| #18 Optical Image Stabilization (OIS) | Sensor-shift stabilization active with zero mechanical rattle during video. | |
| #19 Front Selfie Camera | TrueDepth / HD front camera takes crisp photos and portrait mode depth maps. | |
| #20 True Tone LED Flash | Dual-tone flash illuminates in sync with camera shutter. | |
|
🔊 4. Audio & Voice (6 Test Points) |
#21 Earpiece Receiver | Crystal-clear in-call audio volume with zero crackling or muffled sound. |
| #22 Bottom Loudspeaker | Full frequency acoustic output with rich bass and clear treble. | |
| #23 Top Stereo Speaker | Balanced stereo sound stage separation across top and bottom drivers. | |
| #24 Primary Voice Mic | Clean voice transmission during phone calls and voice recordings. | |
| #25 Noise-Cancelling Mic | Background noise suppression active during speakerphone and video recording. | |
| #26 Voice Assistant Mic | Siri / Google Assistant voice commands recognized accurately from 2 meters. | |
|
📡 5. Sensors & Wireless (8 Test Points) |
#27 Biometrics (Face / Fingerprint) | Secure biometric authentication unlocks in under 0.3 seconds. |
| #28 Dual-Band Wi-Fi (2.4/5GHz) | High-speed connection with stable throughput across 2.4GHz & 5GHz bands. | |
| #29 Bluetooth 5.x Pairing | Instant pairing and stable audio stream to wireless earbuds and accessories. | |
| #30 Cellular 4G/5G Antenna | Strong signal reception across NTC, Ncell, and international bands. | |
| #31 GPS & Digital Compass | Precise satellite location lock and orientation tracking on maps. | |
| #32 Proximity Sensor | Screen instantly turns off when placed near ear during calls. | |
| #33 6-Axis Gyro & Motion | Smooth screen auto-rotation and precise motion tracking in games. | |
| #34 NFC Contactless Chip | NFC tag reading and contactless payment communication verified. | |
|
🛡️ 6. Security & Legal (6 Test Points) |
#35 Nepal MDMS / PTA Whitelisted | Officially registered in Nepal Telecommunications Authority MDMS database. |
| #36 Clean Non-Blacklisted IMEI | Verified zero reports of lost or stolen devices across telecom registries. | |
| #37 iCloud / Google FRP Clean | Device fully factory reset with zero activation locks or remote MDM profiles. | |
| #38 LDI Liquid Indicator Check | Internal liquid contact indicators are white (confirming zero water damage). | |
| #39 Taptic Haptic Engine | Vibration motor produces sharp, rattle-free tactile haptic pulses. | |
| #40 Physical Buttons & Switches | Power, Volume Up/Down, and Mute slider provide crisp mechanical feedback. |
For Refrigerators, Air Conditioners, and Washing Machines.
For Sofas, Dining Tables, Beds, and Wardrobes.
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