Check IMEI & Serial Number Matching
Open the dialer and type *#06#. The IMEI popup will display. Go to Settings > General > About and verify that the IMEI and Serial Number match what appears on the screen and on the SIM tray.
Verify iCloud / Google Account Lock Status
Never accept a phone that has someone else's Apple ID or Google account signed in. To be 100% sure, ask the rider to let you perform a fresh "Erase All Content and Settings". If the phone resets and sets up without asking for an unknown password, it is completely clean.
Test Screen, TrueTone & 120Hz Refresh Rate
On iPhones, pull down Control Centre, long-press the brightness slider, and confirm True Tone is visible and toggles properly. Open a white image or notes app: check for yellow tint or dark patches. Move an app icon around the entire screen to confirm touch registration.
Register Face ID / Fingerprint Sensor
Many cheaply repaired UK used phones have broken Face ID cameras due to bad screen swaps. Always set up your face or fingerprint right in front of the rider. If the camera says "Face ID is not available", do not accept it.
Inspect Real Battery Health & Drain Test
Check Settings > Battery > Battery Health (all Ngwanu Phones UK Used phones are certified 85%+). Record a 4K video for 2 minutes with brightness turned up. If the phone abruptly shuts down or drops 10% in two minutes, the battery is degraded.
Test All Camera Sensors & Flash
Test the main 1x lens, switch to 0.5x ultra-wide, and zoom into 3x or 5x telephoto. Check portrait mode and front selfie camera. Turn on the flashlight to ensure flash LEDs are firing.
Check Microphones & Both Loudspeakers
Open the Voice Memos app and record a 5-second audio clip talking softly into the bottom mic, then playback on loudspeaker. Make a real phone call to verify the ear-piece speaker and proximity sensor (screen should go dark when held to your ear).
Inspect the Liquid Contact Indicator (LCI)
Eject the SIM tray and shine a light into the slot. The liquid sensor indicator inside should be white or silver. If it is pink or red, the device has suffered liquid damage in the past.
Every Ngwanu Phone Passes These 8 Steps Before Dispatch
We do this rigorous testing so you don't have to worry. Every phone comes with our 6-month warranty on UK Used, manufacturer warranty on Brand New, and 7-day swap/return if faulty.