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Our testing standard

10 stages50+ individual checks

What we check before a phone goes on sale.

Every refurbished phone we sell goes through a structured set of checks before it is listed. This page is the short version, so you can see the key areas at a glance.

Browse phones Full technical process

A technician wearing an anti-static strap inspects a smartphone on a clean testing workbench
Minimum 85% battery health on phones we sell
18-month device warranty
12-month battery cover
30-day returns

The check

Our 10 Step Refurb Check

Ten stages, run in order, combining MobiCode automated diagnostics with hands-on inspection. A device only moves forward when the stage before it is clear.

01

IMEI and lock status

IMEI checked against the CheckMend register through our MobiCode diagnostics, iCloud and FRP confirmed unlocked, and the handset verified as network-unlocked before anything else happens.

02

Visual inspection

We inspect the frame, rear housing, screen, camera surrounds, charging port and buttons for damage or poor previous repairs.

03

Screen and touch

Pixels, brightness, colour consistency and touch responsiveness are all verified.

04

Buttons and ports

Power, volume and mute controls, the charging port and the SIM tray are each tested.

05

Cameras and audio

Front and rear cameras, microphones, speakers and vibration are checked.

06

Face ID and Touch ID

Biometric recognition is tested where the model supports it.

07

Connectivity

Wi-Fi, Bluetooth, GPS and 4G or 5G mobile signal are tested.

08

Sensors

Proximity, accelerometer and gyroscope checks.

09

Battery health

Every phone we sell has a minimum of 85% battery health.

10

Wipe, grade and pack

Previous user data is securely wiped using MobiCode, the handset is graded on visible wear, checked against its description and storage, then cleaned and packed.

When something fails

What happens if a phone fails a check?

A device that does not meet our functional, battery or condition standards is not simply passed through for sale. Depending on the issue, it may be repaired and retested, or removed from sale entirely.

Graded on what it is

Cosmetic grading happens after functional testing, and separately from it. A phone that works perfectly but shows wear is graded honestly rather than talked up.

What you get

Battery, warranty and returns standards

85%Minimum battery health on phones we sell
18Month device warranty
12Month battery cover
30Day returns

For formal terms, see our Returns Policy. For practical help with a return or fault claim, see Returns & Refunds.

Read further

Want more detail?

This page is deliberately concise. If you want the long version, start here.

Every phone on the site has been through this

Browse tested, graded and data-wiped handsets with the condition shown up front.

Browse phones

Why shop with Used Phones 4 U

Mobicode testing

Tested using Mobicode, with 50+ device checks available across the testing process.

Battery health

Eligible refurbished phones are supplied with at least 85% battery health at the point of sale.

Warranty & battery cover

Eligible devices include an 18-month device warranty and 12-month battery cover.

30-day returns

30-day returns on eligible purchases, without limiting statutory consumer rights.