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

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.

Custom phone case finished at Casedby

Good to know

Getting there
Seongsu Station Exit 3 · 9-min walk (store listing, Oct 7, 2026)
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

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
Exterior and entrance of Casedby, a Seongsu goods shop

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

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
Inside the unmanned Casedby Seongsu store
Interior space of Casedby Seongsu

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
Case products at Casedby Seongsu

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
Interior space of the unmanned Casedby Seongsu store

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
Phone cases in various designs at Casedby
Custom case making machine at Casedby Seongsu
Case-making area inside Casedby Seongsu

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

What I actually did at the kiosk

Start on the kiosk screen and scan the QR code

Casedby kiosk start screen and QR scan
  • Choose a language
  • Choose your smartphone model (Galaxy or iPhone)
  • Add a photo
  • Pay
  • Production
Casedby kiosk custom case making step
Custom phone case being made at Casedby
Case being made in the machine at Casedby Seongsu
Final stage of making a Casedby custom case

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
Casedby custom case with clean printing
Casedby phone case made as a Seongsu souvenir

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 Seongsu케이스드바이

2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, South Korea서울특별시 성동구 성수이로12길 2

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