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.

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!!

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.


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: 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



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


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.


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.




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.

What I actually did at the kiosk
Start on the kiosk screen and scan the QR code

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




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.



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
2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, South Korea서울특별시 성동구 성수이로12길 2
Casedby: hours, menu and prices →








