Phone case making date in Seongsu: QR photo MagSafe cases at Casedby

In short

Casedby Seongsu is an unmanned phone case workshop on an alley off Seongsui-ro 12-gil in Seongdong-gu, Seoul. At Casedby Seongsu, you scan the shop's QR code, combine your own photos with a design you choose, and the case is printed on the spot as a MagSafe-compatible couple phone case. For a Seongsu date where you make a keepsake together instead of just browsing, Casedby Seongsu is a great fit.

Finished MagSafe photo couple phone cases

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
Operation
Unmanned shop
How it works
Scan the shop's QR code, choose a design, upload your photos, then print
Case feature
MagSafe compatible
Other
Phone decorating accessories for sale

as written by the visitor on Jul 12, 2026

Seongsu is packed with things to do these days, from restaurants to pop-up stores to all kinds of brand spaces, and it's a real date hotspot. Yesterday I went to Casedby Seongsu (케이스드바이 성수점) for a workshop date that leaves you with a special memory! It wasn't just a browsing date. You design and make something yourself, which made it even more fun!!

You can make a phone case with your own taste, or a couple case to make together, so I'd recommend it as an anniversary date course too. You can go in so many styles: idol goods with your favorite character, birthday café goods to celebrate a birthday, or pop-up store goods with your own taste. That made it even more fun. Today I'll tell you in detail how we spent our time at Casedby Seongsu on our Seongsu date >.<!

Visiting Casedby Seongsu
Casedby, a phone case workshop in Seongsu
A workshop date scene at Casedby Seongsu
Phone case goods at Casedby Seongsu

Where is Casedby Seongsu?

Casedby Seongsu is at 2 Seongsui-ro 12-gil, Seongdong-gu, Seoul, tucked inside an alley where you can really feel Seongsu's special atmosphere. It's a handy spot to drop into while wandering the cafés, select shops and brand spaces around Seongsu Station, so it's easy to fit into a date route!

Casedby Seongsu in an alley on Seongsui-ro 12-gil
Around the entrance of Casedby Seongsu

Casedby Seongsu's atmosphere and case designs

The first thing that caught my eye as soon as I walked into Casedby Seongsu was all the pretty cases on display. From clean designs to cases with cute details, each one had its own personality, so just looking around was fun. The moment I started wondering which style to make, I was already so excited!! ❤❤

Designing my own case while looking at the displayed designs was a special time too. You can choose everything yourself, from colors to photos, images and little accents, so the biggest charm is making a one-of-a-kind phone case that holds exactly your taste. That's the po-int!! For a Seongsu date course where you want to make a special memory, and a Seongsu workshop date with the fun of making things yourself, I totally, totally recommend Casedby Seongsu ❤

Case designs on display at Casedby Seongsu
A variety of phone cases displayed at Casedby Seongsu

It's unmanned, so you can pick phone decorating items anytime

Besides making cases, Casedby Seongsu also had a variety of hukku (휴꾸, phone decorating) items for dressing up your phone ❤ Since it's unmanned, you can come by anytime to decorate your phone for a change of mood, and it'd be great for buying a gift for a friend too!!

You carry your phone around every single day~~ so spending on it is never a waste!!!! ❤❤ I liked that I could hold items that match the phone case right up to my own phone and choose on the spot!

Phone decorating items at Casedby Seongsu
Choosing hukku items in the unmanned shop

How do you make a couple phone case?

At Casedby Seongsu you scan the QR code in the shop, open the page easily, and choose the design you want, so it wasn't hard at all. My boyfriend and I started making our cases in earnest ❤

I had picked the photos I wanted to use in advance, so the design process went much faster and smoother. We combined photo placement and design ourselves, and it was a time of building our own special couple case 💕

  • Scan the QR code in the shop and open the page
  • Choose the case design you want
  • Add the photos you picked out in advance and arrange their placement
  • Print and receive the finished case
Designing a couple case after opening the QR code page
Adding couple photos and arranging the phone case design
The case-making process at Casedby Seongsu
Designing and printing the couple phone cases

How were the finished MagSafe couple cases?

Once the design was done at Casedby Seongsu, it went straight to printing and the cases came out quickly ❤ Seeing the photos and design I picked appear on the case just as I chose them felt amazing, and the result turned out so pretty, so I'm totally satisfied!!!!

I especially liked that the case supports MagSafe. My boyfriend said it'd hold firmly when he mounts his phone in the car, so he loved the practical side too 😊 Not only a pretty design but also useful, which made it an even more special couple case 💕 Our one-of-a-kind cases!! So precious!!!!❤❤

Finished MagSafe photo couple phone cases

How was it different from sliding photos into a clear case?

In the old days,,,, I used to put a photo I liked into a clear case every day and swap it out, and it was more of a hassle than you'd think ㅜㅡㅜ This time on our Seongsu date, printing the photo I wanted directly onto the case felt much easier and more special ❤

Maybe because it's a case made from a design and photos I picked myself, I feel even more attached to it ❤❤❤❤ I was really happy that I could put memories on the phone case I use every day ❤

If you're looking for a special date, I really recommend Casedby Seongsu, a Seongsu workshop date where you make something yourself and keep the memory too 💕

Where it is

Casedby Seongsu케이스드바이

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

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