---
title: "PoužitéiPhony.cz | two.do"
description: "An iPhone trade-in calculator connected to the store’s product page."
lang: "en-GB"
---

E-commerce

# PoužitéiPhony.cz

An iPhone trade-in calculator connected to the store’s product page.

![PoužitéiPhony.cz](https://two.do/_media/7c417965fc061a356776f2c84dbfd67483ec52ad20ff93380c562fa86dcae05c)

![PoužitéiPhony.cz](https://two.do/_media/12c4a23c1157e2d161888b14ee77ec1141fe90420bf5557696e48d02ee55108e)

**Scope**
- E-commerce

**Project type**
- Delivered work

## The brief

The shop wanted to estimate trade-in value beside each new iPhone. Customers could then see how their old device affects the purchase price.

![PoužitéiPhony.cz · The brief](https://two.do/_media/147a29a4f98105495ad82d158bfe9d712be12c176016b0f17f6393964ede52ef)

## The challenge

Supported devices had to come from the product catalogue. Inconsistent names and variants needed processing without delaying the form when opened.

## Our approach

We developed a responsive dialogue for selecting a device and its condition. Product data is prepared separately and refreshed daily.

![PoužitéiPhony.cz · Our approach](https://two.do/_media/c40667722cf9d816392abacebd1fc029b88880842a6ea7ac1d2dc02e57964570)

## The result

The calculation connects with the product being viewed. Administrators do not need to maintain a second phone catalogue specifically for the form.

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