LG U Plus Mobile Plans for Foreigners: Review and Setup
Last updated: June 3, 2026
LG U+ gives foreigners two distinct tracks: a passport-only prepaid SIM for stays under 90 days, or a 12-month post-paid plan once you hold a Korean Alien Registration Card (ARC). This article reviews both options, the exact documents you need, the total cost, and the fastest way to get a SIM or eSIM in 2026.
Last updated: June 3, 2026
Eligibility and Plan Types
Plan | Who Qualifies | Commitment | Data & Voice | Monthly Cost |
|---|---|---|---|---|
Foreigner SIM Prepaid | Visitors (≤ 90 days within any 180-day window) | 30 days, renewable max 3× | 10 GB + unlimited domestic voice/SMS | ₩44,000 |
Data Roaming Pass | Short-term travelers | 1–30 days | Unlimited 5G (no throttle) | ₩15,000/day |
5G Do-Data Post-paid | ARC holders (valid ≥ 12 months) | 12 months minimum | Unlimited (150 GB at full 5G, then 5 Mbps) | ₩69,900 |
Regular 5G Post-paid | ARC holders | 12 months | Tiered 11–300 GB plans | ₩55,000–₩125,000 |
Key point: you cannot move from prepaid to to a post-paid plan without first obtaining an ARC. Tourist visas (B-2, B-1) do not convert into post-paid eligibility.
Document Checklist
Prepaid (Foreigner SIM)
- Passport with visa stamp or K-ETA printout
- Contact phone or email for OTP verification
- Payment: cash or international credit card
Post-paid (All ARC holders)
- Alien Registration Card (ARC) front & back
- Passport (for identity cross-check)
- Korean bank account number or debit card for auto-pay
- Optional: certificate of enrollment/employment (only if requested for credit review)
Diplomats & USFK SOFA
- Ministry of Foreign Affairs-issued ID or USFK SOFA card
- Passport (still required per KCC real-name rule)
All documents must be originals; photocopies or scans are accepted only after staff sight the original. E-visa PDFs are not accepted as of 1 January 2026.
Step-by-Step Application
1. Find a Store
LG U+ lists 1,247 branches accepting foreign ID. Forty-two are inside Incheon or Gimpo airports and operate 06:00–22:00 daily. Use the store locator to check the one nearest your accommodation.
2. Book or Walk-in
- Airport branches: walk-in only, queue rarely exceeds 15 minutes off-peak.
- City branches: reserve via the U+ app or call 1899-0120 (English, Chinese, Vietnamese, Tagalog, 09:00–18:00 KST).
3. ID & Real-Name Check
Staff will scan your passport/ARC and send the data to Korea Communications Commission (KCC) real-name system. Average scan-to-approval time: 40 seconds.
4. Select Plan & SIM Type
- Prepaid: choose physical nano-SIM or eSIM (iPhone XS and later, Galaxy S21 and later).
- Post-paid: decide between 5G Do-Data or tiered plans, pick SIM or eSIM.
5. Payment & Deposit
- Prepaid: pay ₩44,000 on the spot.
- Post-paid: pay deposit ₩30,000 if your ARC expires ≤ 12 months (waived for diplomats/USFK). Set up auto-pay from a Korean bank or international card.
6. Activation
Physical SIM: insert and restart. eSIM: scan the QR code at the counter; activation completes within 3 minutes.
Average total processing time for post-paid with ARC: 12 minutes from document scan to SIM issuance.
Pricing, Fees, and Refunds
Item | Amount | When Charged | Refund Terms |
|---|---|---|---|
Prepaid 30-day pack | ₩44,000 | At purchase | 10 % VAT refund at airport if departing within 90 days (minimum ₩30,000 spend) |
Post-paid deposit | ₩30,000 | First bill | Returned to the same bank account within 15 business days after final bill settlement |
Early termination fee | ₩30,000 flat | Upon cancellation | Same regardless of remaining months |
eSIM replacement | Free once per contract | After loss/damage | Physical SIM re-issue ₩11,000 |
All prices include 10 % VAT unless noted otherwise.
Common Pitfalls
- 90-day prepaid cap: Korea Immigration Service enforces a rolling 180-day window. If you stay 90 days, you must wait another 90 before buying another prepaid SIM under the same passport.
- ARC expiry ≤ 12 months: even if you have an ARC, the ₩30,000 deposit is mandatory unless you renew the card before signing the contract.
- E-visa printouts denied: since 1 January 2026, only physical visa stickers or ARCs pass real-name verification. Save yourself a wasted trip.
- Foreign credit card decline: some post-paid systems reject non-Korean debit cards. Bring a Korean bank account or at least a Visa/Master credit card issued overseas.
- Family discounts not available: the 5G Do-Data plan for foreigners is single-line only; you cannot bundle family members.
Frequently Asked Questions
Can I start on prepaid and later switch to post-paid with the same number?
No. Prepaid SIMs are issued under a tourist identity and cannot be ported to post-paid. You will receive a new number when you sign a 12-month contract.
Is the Data Roaming Pass cheaper than the Foreigner SIM?
Only if you stay fewer than 3 days (₩15,000 × 3 = ₩45,000 vs ₩44,000 for 30 days). Otherwise the Foreigner SIM is cheaper and includes voice.
Do I need a Korean bank account for post-paid?
Technically no; LG U+ accepts international Visa, Master, JCB, and AmEx for auto-pay. In practice, foreign debit cards often fail, so a Korean bank account is strongly recommended.
Can I get an eSIM before arrival?
No. The eSIM QR code is issued only after in-store ID verification.
What happens if I leave Korea early?
Cancel at any LG U+ branch or via the hotline. Early-termination fee is ₩30,000. Deposit refunds require a Korean bank account; if you do not have one, the store can issue a cash refund on the spot but only at the branch where you opened the line.
Can I use the unlimited Data Roaming Pass on a Korean SIM?
No. The pass is for inbound roamers carrying non-Korean SIMs. If you already have an LG U+ SIM, domestic data rates apply.
Are there Chinese, English, or Vietnamese app menus?
Yes. After inserting the SIM, the U+ mobile app auto-detects your phone language and displays English, 中文, Tiếng Việt, and Tagalog options.
Can I tether or hotspot on the 5G Do-Data plan?
Yes, tethering is allowed at full speed until you hit the 150 GB threshold; afterward tethering remains at 5 Mbps.
Is a credit check run on foreign residents?
LG U+ runs a simplified check through a Korean credit bureau. If you are new to Korea and have no credit history, they may ask for proof of employment or enrollment. Students on D-2 visas typically provide a certificate of enrollment and bank balance statement.
If you’re staying in Seoul and want tips on daily life, see our Living in Seoul as a foreigner guide. Once you have a Korean bank account, this Shinhan Bank walkthrough covers cards, apps, and English service.
Getting connected in Korea is straightforward once you know which track matches your visa status. Bring the exact documents above, choose the shortest queue at an airport LG U+ branch, and you can be online within 15 minutes.
Navigating contracts, apps, and customer service is smoother when you understand basic Korean. Migaku helps learners turn real Korean content into study material, so signing up or troubleshooting your LG U+ plan gets easier every day.