Top picks for Ulsan Wi-Fi & SIM cards

Discover 24 Wi-Fi & SIM cards in Ulsan on Trip.com, updated February 24, 2026, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From TRY 5.48 per person, with an average total of TRY 107.06. Choose the option that suits your plan.

With 43.682k verified reviews, Wi-Fi & SIM cards Ulsan boast an average rating of 4.6.

This week's most popular Wi-Fi & SIM cards: "Global (66 countries) | 4G/5G eSIM | Total Package | 1-7 days | 24H Billing | Real-Name Auth Required (Hong Kong & Taiwan) | QR code", with 16.203k reviews and a 4.4 rating.

The next available day tour departs on February 25, 2026. Book now to secure your spot!

Ulsan Wi-Fi & SIM cards usually take about 1 hours — perfect for a relaxed, immersive experience!

February is perfect for visiting Ulsan! Choose from Wi-Fi & SIM cards available day tours, including seasonal hits like Global (66 countries) | 4G/5G eSIM | Total Package | 1-7 days | 24H Billing | Real-Name Auth Required (Hong Kong & Taiwan) | QR code.

Your trip, worry-free! All day tours are run by licensed suppliers with verified reviews, and many include free cancellation before departure.

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24 results for Ulsan Wi-Fi & SIM cards

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Reviews/Trip Moments

Reviews: South Korea 5G eSIM | TikTok & ChatGPT Available | Day Pass/Total Data Package | 24-Hour Billing | 1-30 Days | QR Code
Guest User2026-02-08
5G is always fast in Korea. I never felt it was slow, and I didn't even have to use the hotel Wi-Fi. Another person couldn't connect after arriving in Korea, but they were able to connect after restarting their iPhone. Setting it up before leaving the country is no problem. It was the cheapest I could find. Definitely cheaper than Trifa. I didn't use customer service, so I just used it normally.
Reviews: South Korea | 5G eSIM | Day Pass/Total Package | 24H Billing | 1-30 days | QR code
Guest User2026-02-08
Pros: - Instant activation, no physical SIM swap - Strong coverage across Seoul, even in crowded areas - Fast data speeds for maps, messaging, and social media - Keeps your original SIM safe and untouched - Perfect for short‑term travelers and family trips Cons: - Requires a phone that supports eSIM (check before buying) - Data packages vary, so choose one that fits your usage Tips: - Activate right after landing for immediate connectivity - Use it alongside Wi‑Fi for heavy downloads to save data - Check your phone’s eSIM compatibility before purchase
Reviews: South Korea SKT eSIM | Unlimited Data + 010 phone number | 1-90 days | 24-hour billing | QR code
Guest User2026-02-01
The SIM card is amazing! The internet signal is uninterrupted. As soon as I switched networks from Thailand, I had a signal in Korea immediately, even before landing. I highly recommend it! (From someone who's read many reviews). Plus, the T-Money card made the price very affordable.
Reviews: South Korea SKT | 4G eSIM | Day Pass | Unlimited data + 010 phone number | 24H Billing | 1-90 days | QR code
Guest User2026-01-26
The SIM card worked perfectly from the moment I inserted it. Fast and stable internet, good coverage both in cities and during trips. I had no issues with connection or speed, even when using maps, social media, and video calls. Very easy to activate, no additional setup required. Definitely recommend for travelers visiting Korea.
Reviews: South Korea 5G eSIM | Dual Network Coverage | ChatGPT | 1–30 Days | Instant QR
Guest User2026-01-28
First time using eSIM, so the initial installation asked customer service 10 points friendly quickly answered the question! It turns out that installation 10 points easy, after installation to the local open roaming to use, more convenient than the previous SIM card replacement, stable and fast connection, good coverage of the place will not be received, GB number is enough! Will repurchase again next time!
Reviews: Asia 10 Destinations 5G eSIM | Japan, Thailand, Vietnam, Indonesia, Korea & More | ChatGPT | 1–30 Days | Instant QR
Guest User2026-01-11
I used this in KL, Bangkok and Shanghai. Overall the signal was ok. Sometimes we do get a drop out but it’s not often. We managed to use all social media platforms with this eSIM at Shanghai. Only thing is if you want to hail a ride you’ll need a number for it in china.
Best Contact Center 2024 - Bronze
Best Contact Center 2024 - Bronze