Simsim Disruption in Early COVID-19 Response
- SEOUL, South Korea (AP) — SK Telecom (017670.KS) is working to mitigate a potential shortage of SIM cards following a data breach affecting subscriber information.
- Yoo Young-sang, a representative for SK Telecom, addressed concerns about SIM card inventory at a National Assembly hearing.
- Lawmakers at the hearing emphasized the importance of securing an adequate SIM card supply, drawing parallels to mask shortages during the COVID-19 pandemic.
SK Telecom addresses SIM Card Shortage After Data Breach, Promises Roaming Protection
Table of Contents
- SK Telecom addresses SIM Card Shortage After Data Breach, Promises Roaming Protection
- SK Telecom SIM Card Shortage: Your Questions Answered
- What’s happening with SK Telecom and SIM cards?
- Why is there a SIM card shortage?
- How is SK Telecom responding to the SIM card shortage?
- When are more SIM cards expected to be available?
- What about travelers and roaming?
- What is the “Simsim protection Service”?
- Are eSIMs an alternative to physical SIM cards?
- What are the key suppliers of SK Telecom SIM cards?
- How does the demand for SIM cards compare to typical supply?
- key Dates and Deadlines for SIM cards
SEOUL, South Korea (AP) — SK Telecom (017670.KS) is working to mitigate a potential shortage of SIM cards following a data breach affecting subscriber information. The company is offering free SIM replacements and developing solutions to ensure service continuity for customers, particularly those traveling abroad.
SIM Card Supply and Demand
Yoo Young-sang, a representative for SK Telecom, addressed concerns about SIM card inventory at a National Assembly hearing. He stated that approximately 5 million SIM cards are expected to be available around may 17. Yoo also mentioned that KT Corp and LG Uplus had offered to provide semiconductor chips for SIM cards,but technical limitations prevented their immediate use.

Lawmakers at the hearing emphasized the importance of securing an adequate SIM card supply, drawing parallels to mask shortages during the COVID-19 pandemic. Yoo explained that while the semiconductors used in SIM cards are generally the same, the “top” component differs between providers.
SK Telecom’s primary SIM card suppliers include SK Tellink, Thales, and Ubibelox (089850.KQ). These companies typically supply around 3 million SIM cards annually but are now working to produce 25 million units to meet the increased demand from SK Telecom subscribers seeking replacements after the hacking incident.
Travel and Roaming Concerns

The SIM card shortage is expected to be most acute in early May, coinciding with increased travel for Children’s Day holidays. SK Telecom is promoting its “Simsim Protection Service,” but currently, this service cannot be used simultaneously with overseas roaming.
Yoo stated that SK Telecom is developing a solution to enable the use of SIM protection services while roaming, with an expected launch date of May 14.
Additional Measures and Criticism
Yoo also addressed concerns from small business owners involved in mobile phone sales, acknowledging their investment in SIM card replacements and promising to develop supportive measures.
Kim Woo-young, a member of the Democratic Party, criticized SK Telecom for not proactively encouraging subscribers to switch to eSIMs, which are seen as an alternative to physical SIM cards. Kim also suggested that SK Telecom should consider waiving fees for eSIM services,which are currently offered as a paid option. SK Telecom has not commented on the fee suggestion.

SK Telecom SIM Card Shortage: Your Questions Answered
This article addresses the SIM card shortage faced by SK Telecom customers, offering insights into the causes, solutions, and implications.
What’s happening with SK Telecom and SIM cards?
SK telecom is experiencing a potential SIM card shortage. This situation arose following a data breach that affected subscriber data. The company is taking steps to address the shortage and ensure service continuity for its customers.
Why is there a SIM card shortage?
The primary cause is increased demand due to the data breach. Subscribers are seeking SIM card replacements. The company’s primary suppliers are working to increase production to meet this demand.
Increased Demand for Replacements
SK Telecom is offering free SIM replacements due to the data breach, which has lead to a surge in demand.
Supply Chain Constraints
the “top” component of the SIM card differs between providers, and this, along with increased demand, has created supply challenges.
How is SK Telecom responding to the SIM card shortage?
SK Telecom is taking the following measures:
Offering free SIM replacements: Subscribers affected by the data breach can get a replacement SIM card free of charge.
Increasing SIM card production: Suppliers are working to produce significantly more SIM cards to meet the increased demand.
Developing roaming solutions: The company is working on a solution to enable the use of the “simsim Protection service” while roaming internationally, with an expected launch date of May 14.
Addressing concerns of small business owners: SK Telecom recognizes the investment made by small businesses involved in mobile phone sales and promises to develop supportive measures.
When are more SIM cards expected to be available?
Approximately 5 million SIM cards are expected to be available around May 17.
What about travelers and roaming?
The SIM card shortage is a concern, particularly for travelers. The shortage is expected to peak in early May, coinciding with Children’s Day holidays, a time of increased travel.
Impact on Roaming Services
Currently, SK Telecom’s “Simsim Protection Service” cannot be used together with overseas roaming. Though, a solution is in development with an expected launch date of May 14 to fix this.
What is the “Simsim protection Service”?
The article doesn’t provide detailed information about the “simsim Protection Service” features, but it clarifies that it is indeed a service offered by SK Telecom.
Are eSIMs an alternative to physical SIM cards?
Yes, eSIMs are a potential alternative to physical SIM cards. Kim Woo-young, a member of the Democratic Party, has suggested SK telecom proactively encourage the adoption of eSIMs.
What are the key suppliers of SK Telecom SIM cards?
SK Telecom’s primary SIM card suppliers include the following:
SK Tellink
Thales
* Ubibelox (089850.KQ)
How does the demand for SIM cards compare to typical supply?
Typically, the suppliers listed above provide around 3 million SIM cards annually. though, due to the increased demand, they are working to produce 25 million units.
key Dates and Deadlines for SIM cards
| Date | Event |
| ——————- | ———————————————————————- |
| april 28,2025 | Citizens waiting to replace SIM cards at an SK Telecom store. |
| April 29, 2025 | Customers wait for SIM card replacements at an SK Telecom dealer. |
| April 30, 2025 | Increased traffic at Incheon Airport Roaming Center. |
| Early May 2025 | Expected peak of SIM card shortage, coinciding with Children’s Day travel. |
| May 14, 2025 | Expected launch of roaming solution for Simsim Protection Service. |
| May 17, 2025 | Approximately 5 million SIM cards expected to be available.|
