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How to Inspect a Used Phone Before Buying — Complete Checklist

May 1, 20267 min read0 views
How to Inspect a Used Phone Before Buying — Complete Checklist

Why Inspection Matters


80% of used phone problems are detectable with proper inspection. Follow this step-by-step checklist before paying.

✅ Screen



  • Display full white then full black screen — look for dead pixels

  • Press all screen areas — unresponsive zones indicate touch issues

  • Compare brightness and colors — copy screens have washed-out colors

  • Play a video — check for lines or flickering

✅ Body & Frame



  • Inspect all four corners — common crack points

  • Check screws — mismatched colors or scratches mean the phone was opened

  • Press the frame — rattling indicates improper assembly

✅ Battery



  • iPhone: Settings > Battery > Battery Health — must be 80%+

  • Android: Dial *#*#4636#*#* for battery info, or use AccuBattery

  • Below 75% means replacement needed (500–1,500 EGP depending on model)

✅ Camera



  • Test front and rear cameras in good and low light

  • Record video — check stabilization and audio

  • Look for dust or scratches inside the lens

✅ IMEI & Registration



  • Dial *#06# and record the number

  • Match with the box IMEI (if available)

  • Verify at imei.info — confirm not stolen/blacklisted

  • Open "Telephony" app — confirm registered on Egypt's network

✅ Speakers, Mic, Charging & Connectivity



  • Make a call — speak and listen

  • Play music on speaker — check for distortion

  • Plug in charger — verify normal and fast charging

  • Connect to WiFi and Bluetooth — test both

Useful Test Codes








CodeFunction
*#06#IMEI number
*#*#4636#*#*Battery & network info (Android)
*#0*#Full hardware test (Samsung)
*#*#0842#*#*Vibration & backlight test (Android)

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