# Custom phone case shop in Seongsu: 10-minute date souvenir, Casedby

- By Bookish Wanderer (https://superchart.com/en/@weekday-reading-map/)
- Written Jun 9, 2026
- Local places › Shopping › Seongdong, Seoul
- Sponsored: This visit was sponsored by the business.
- English edition: https://superchart.com/en/@weekday-reading-map/seongsu-custom-phone-case-date-goods/
- Also in: [한국어](https://superchart.com/ko/@weekday-reading-map/seongsu-custom-phone-case-date-goods/index.md)

## In short

Casedby Seongsu is a 24-hour unmanned custom phone case shop on Seongsui-ro 12-gil in Seongdong, Seoul. The writer, who lives in a neighborhood next to Seongsu, edited photos at the kiosk and made a MagSafe case (₩28,700) and a clear case (₩22,800) in about 10 minutes, getting sturdy cases with clean printing. Verdict: prepare an AI-made photo before visiting Casedby Seongsu to turn the case into an extra-special Seongsu souvenir.

## Good to know

- **Address**: 2 Seongsui-ro 12-gil, Seongdong-gu, Seoul
- **Hours**: Unmanned store, open 24 hours
- **MagSafe case**: ₩28,700
- **Clear case**: ₩22,800
- **Case-making machines**: 2 custom case machines
- **Time needed**: About 10 minutes for the whole process
- **Price reference**: ₩28,700 ≈ $21.5 · ₩22,800 ≈ $17 (2026-10-22)

*as written by the visitor on Jun 9, 2026*

## A Seongsu date spot where you can make your own goods: Casedby

Casedby Seongsu is a shop in Seongsu where you can make your own custom phone case. Today I'm introducing a Seongsu date course and a place to make Seongsu goods, recommended by a resident of the neighborhood right next door!!

![Casedby Seongsu store in Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-01-1r3v8-900.webp)

I live in the neighborhood right next to Seongsu, so whenever I have time I knock out one Seongsu spot at a time, like a stroll around the neighborhood. Browsing all the pop-up store goods is fun, but I think the best Seongsu souvenir is making an item that's just for you.

So if you're looking for Seongsu goods that are special, just for you, just for the two of you, or just for 'SOMEONE', Casedby is a perfect place to visit in Seongsu.

![Full view of the Casedby Seongsu store](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-02-1wfxh-m-900.webp)

![Exterior and entrance of Casedby, a Seongsu goods shop](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-03-t3hx5-m-900.webp)

## What is Casedby?

Casedby is a premium phone case brand, and Casedby Seongsu is a phone accessory store the brand opened. It doesn't just sell ready-made accessories; you can make a phone case on the spot. In just a few minutes, you can create a premium-quality custom phone case with the design you want.

![Casedby Seongsu custom phone case shop](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-04-1wirp-900.webp)

## Casedby Seongsu: location, hours and prices

Casedby Seongsu is at 2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, and since it's an unmanned store, you can use it 24 hours a day.

- Location: 2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, South Korea
- Hours: unmanned store, open 24 hours

![Casedby Seongsu, an unmanned store open 24 hours](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-05-15oxt-900.webp)

![Inside the unmanned Casedby Seongsu store](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-06-d4yfe-m-900.webp)

![Interior space of Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-07-1qvhv-900.webp)

Custom cases at Casedby Seongsu cost ₩28,700 for a MagSafe case and ₩22,800 for a clear case.

- MagSafe case: ₩28,700
- Clear case: ₩22,800

![Photo related to Casedby MagSafe and clear case prices](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-08-6pti0-900.webp)

![Case products at Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-09-10ppu-900.webp)

## What's inside Casedby Seongsu?

Casedby Seongsu isn't big, but it's very pleasant. And because it's unmanned and open 24 hours, it was easy to drop in and use without any pressure.

![Pleasant interior of Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-10-p6ubl-900.webp)

![Interior space of the unmanned Casedby Seongsu store](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-11-6t6mj-900.webp)

In the tidy space you can also buy ready-made cases you like. Besides buying cases in all kinds of designs and stylish looks, there are two machines where you can make a phone case with your own style.

![Ready-made cases on display at Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-12-1tc0t-900.webp)

![Phone cases in various designs at Casedby](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-13-101m3-900.webp)

![Custom case making machine at Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-14-1bo31-900.webp)

![Case-making area inside Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-15-k55ln-900.webp)

## How to make a custom phone case at Casedby

At Casedby you can make a custom case from your own photos, or buy an artist collab case. It's up to you.

### Steps for a personal custom case

- Scan the QR code
- Choose your phone model
- Tap the upload button
- Select your personal photo
- Edit
- Pay
- Production

### Steps for buying an artist collab case

- Scan the QR code
- Choose your phone model
- Tap the gallery button
- Choose an illustration by artist
- Edit
- Pay
- Production

You can edit the photo in lots of ways. You can add text, and edit both the photo and the lettering.

![Photo editing for a Casedby custom phone case](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-16-1ai2u-900.webp)

### What I actually did at the kiosk

Start on the kiosk screen and scan the QR code

![Casedby kiosk start screen and QR scan](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-17-1wkyi-900.webp)

- Choose a language
- Choose your smartphone model (Galaxy or iPhone)
- Add a photo
- Pay
- Production

![Casedby kiosk custom case making step](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-18-1grbu-900.webp)

![Custom phone case being made at Casedby](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-19-ega28-900.webp)

![Case being made in the machine at Casedby Seongsu](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-20-739t2-900.webp)

![Final stage of making a Casedby custom case](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-21-8jfqg-900.webp)

And done!

## How was the quality of the finished Casedby custom phone case?

The whole process for a Casedby custom phone case takes about 10 minutes. It really takes almost no time. If you've thought about your photo beforehand, it's done in 10 minutes or so.

First of all, the quality of the phone case itself is great. It's a sturdy case, which is the sign of a good one.

On top of that, the printing is really clean. It came out so clean and neat that I was honestly amazed.

![Custom phone case finished at Casedby](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-22-p0k4y-m-1200.webp)

![Casedby custom case with clean printing](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-23-3mcjx-900.webp)

![Casedby phone case made as a Seongsu souvenir](https://img.superchart.com/images/seongsu-custom-phone-case-date-goods/seongsu-custom-phone-case-date-goods-24-glass-m-900.webp)

A Seongsu workshop date, Seongsu goods, Seongsu souvenirs: totally, completely satisfied!!!!

## A tip for making it even prettier at Casedby

If I may share my own TIP, I recommend making your photo with AI beforehand!! Then you can make a phone case that's even more special and prettier.

## Where it is

- Casedby Seongsu (케이스드바이)
- 2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, South Korea
- 서울특별시 성동구 성수이로12길 2
- 37.5399179, 127.0556832
- Google Maps: https://www.google.com/maps/search/%EC%BC%80%EC%9D%B4%EC%8A%A4%EB%93%9C%EB%B0%94%EC%9D%B4/@37.5399179,127.0556832,17z

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