MERN · 2025
4Phones
eCommerce storefront for buying and selling phones and accessories with fast search, smart filtering, and checkout.
Impact
+18% AOV uplift
Duration
14 weeks
Region
🇬🇧 United Kingdom
[ Gallery ]
01
01 /
The Challenge
The client ran their phone trade-in business entirely via WhatsApp and spreadsheets. They needed a full marketplace where customers could browse stock and complete purchases without human intervention.
02
02 /
Our Role
Contributed the product search/filter module and trade-in quote algorithm at a previous company. Full-stack ownership was shared across a wider team.
03
03 /
The Outcome
Average order value increased 18%. Manual order processing dropped from 3 hours/day to under 20 minutes.
[ Technology ]
Stack & tools
we shipped with.
MongoDBExpressReactNode.jsStripeCloudinary
[ Delivered ]
What we
built.
01Product listing & search
02Advanced filters
03Cart & wishlist
04Secure checkout
05Trade-in flow
06Seller dashboard
[ Start your project ]