Gwangju iPhone battery replacement you can watch: SANFIX in Sangmu
In short
SANFIX is an iPhone, iPad and Apple Watch repair shop on the 7th floor of the BYC Building in the Sangmu District of Seo-gu, Gwangju. After more than 3 years of use, an iPhone 15 Pro's battery health had fallen to 77%, so SANFIX fitted a KC-certified high-capacity battery in an open work area where the customer watches the whole process. The swap required no data reset or backup, and the battery carries a 180-day warranty.

Good to know
- Location
- Unit 704-2, 7F, BYC Building, 43 Sangmujungang-ro, Seo-gu, Gwangju
- Getting there
- 7-minute walk from Sangmu Station Exit 4
- Parking
- Above-ground and underground parking in the building, fees covered for up to 1 hour 30 minutes
- Repairs handled
- iPhone, iPad, Apple Watch
- Battery options
- KC-certified high-capacity battery or genuine certified battery
- After-service
- 180-day battery warranty
- Booking
- Naver Reservation available
- Years in business
- 11th year in Sangmu District, since 2015
as written by the visitor on Sep 26, 2026
Today's post is about my iPhone 15 Pro battery replacement!

Why I chose SANFIX for an iPhone battery replacement in Gwangju
My battery has been draining so fast lately. By the afternoon I was scrambling to find a charger 🔋 So I went to SANFIX, known for iPhone battery replacement in Gwangju!
SANFIX location and parking: 7 minutes from Sangmu Station Exit 4
It's located on the 7th floor of the BYC Building in Sangmu District.


It's about a 7-minute walk from Sangmu Station Exit 4!

Driving is fine too. You can use the building's above-ground and underground parking, and they cover parking fees for up to 1.5 hours 🚗


The store has a clean, quiet atmosphere.

Let's peek into the office.

They said they've been in Sangmu District for 11 years now, since 2015. Being an established place, it felt trustworthy.

An open work area where you watch the repair happen
What I liked about SANFIX was that you can actually watch the repair happen! They work in a space visible to customers.


It's reassuring to see exactly what's happening to my phone 👀

Consultation and diagnostics: battery health, charging response, power status
The consultation was thorough from the start. They checked battery performance, charging response, and power status first.

Fitting the high-capacity battery in the iPhone 15 Pro
They explained the battery options too. Since I plan to use this phone for a long time, I went with the high-capacity option — a KC-certified high-capacity battery. There's also a genuine certified battery option if you'd rather go that route.

My original battery health was at 77% ㅜㅠ After more than 3 years of use, I couldn't leave the house without a portable charger ㅜㅜ
The work took less time than I expected. It was replaced without any data reset, so all my photos and contacts stayed exactly as they were 📱

After finishing, they checked the charging and power status before handing it back. No backup process needed at all — super fast.

What the 180-day battery warranty covers
Details about the battery I had replaced are written here too. And what I liked most was the warranty period! The battery comes with a 180-day warranty. I've heard some places won't help if something goes wrong after replacement, but here they clearly stand behind their work, which I appreciated 👍


How the iPhone 15 Pro feels after the new battery
Using it now, it definitely lasts longer. I worry less about charging even after using it all day. It feels less warm than before, too.
My rating for SANFIX
- Friendliness ⭐⭐⭐⭐⭐
- Explanation ⭐⭐⭐⭐⭐
- Work speed ⭐⭐⭐⭐⭐
- After-service ⭐⭐⭐⭐⭐
- Accessibility ⭐⭐⭐⭐
SANFIX at a glance: address, hours and booking
- 📍 SANFIX · 7F, Unit 704-2, BYC Building, 43 Sangmujungang-ro, Seo-gu, Gwangju
- 🚇 7-minute walk from Sangmu Station Exit 4
- 🚗 Building parking available (up to 1.5 hours supported)
- 🔧 iPhone, iPad, Apple Watch repair
- 🔋 180-day battery warranty
- 📅 Naver Reservation available
A Gwangju iPhone repair shop with friendly explanations and solid after-service!

By the way, since you can book through Naver Reservation, you can get straight to your consultation without waiting.


They're also active on Instagram and their blog. Lots of repair cases are posted there, so it's worth checking before you visit 😊
Be sure to check their review event too

Where it is
7F, Unit 704-2, BYC Building, 43 Sangmujungang-ro, Seo-gu, Gwangju, South Korea전남광주통합특별시 서구 상무중앙로 43 BYC빌딩 7층 704-2호 샌픽스







