Tested, graded, guaranteed
Buy a refurbished iPhone Duo online with Envirofone, tested and certified with our 70-point PhoneCheck.
This device has been certified and passes our 70-point PhoneCheck
Battery
Face ID
Connectivity
Authentication
Cosmetics
Speakers
Got one to sell? Sell my iPhone DUO
Every grade is fully functional and carries the same 12-month warranty. The difference is cosmetic - pick one to see exactly what it means.
Every grade is fully functional and carries the same 12-month warranty. The difference is cosmetic, and only cosmetic.
Impeccable condition with no visible marks. Looks and feels like new, having passed our most stringent checks.
Carefully used with only the lightest signs of wear. Fully tested to ensure top-tier performance across every feature.
Shows gentle, everyday wear such as minor surface marks, but remains 100% functional with great battery health.
Apple's first foldable iPhone, with a 7.6-inch folding display and up to 44 hours of video playback. Trade yours in and see what it is worth.
Fully tested and reverted back to factory settings.
Easily insert your SIM card with the provided tool
Eco-friendly design by loop, minimal waste.
Checks for manufacturer, carrier, & software locks.
Automated component functionality scan.
Battery capacity check to receive and hold a charge.
Replacement part & background check.
Check SIM, place test call & sms message.
Secure data wipe and reset to factory default.
The iPhone Duo is the first foldable iPhone, announced on 9 September 2026 and on sale from 23 October. It opens from a pocketable phone into a 7.6-inch Super Retina XDR folding display with a nano-texture finish, built around a multi-layer laminated structure and dual batteries that give up to 44 hours of video playback on the outer display. Storage runs from 256GB to 2TB, and it is sold in two colours, Night Sky and Star White.

Officially recommended by Which?
Envirofone is a Which? Recommended Provider for refurbished tech - independently assessed for trust, value and service. (October 2025)