South Korea: logistics and access
South Korea imports nearly all its oil and was the world's third-largest importer of liquefied natural gas in 2024, so LNG terminals and fuel storage are major classified-area sites.
South Korea · intrinsically safe
Intrinsically Safe Mobile Phone Supplier in South Korea
The IS-04Z1 is an intrinsically safe handset for people who cross into classified areas in South Korea every shift: refinery and petrochemical-complex operators at Ulsan and Yeosu, shipyard tank engineers, and the HSE and telecoms teams who equip them. This page sets out how an intrinsically safe mobile phone supply route to South Korea will work for the IS-04Z1, and what is and is not available before launch.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicintrinsically safe
DeviceMobile Phone
RouteSupply
WhereSouth Korea
Short answer. An intrinsically safe mobile phone for South Korea cannot be bought yet: the SAMS IS-04Z1 is pre-launch (certification in progress, no certificate issued), and the datasheet, certification schedule and safe-area evaluation units are available now.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. Operator approval runs on its own timeline. Certification status. Place facts reviewed October 2026.
At a glance · intrinsically safe
Checklist: intrinsically safe mobile phone for South Korea
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | South Korea: Daesan, Onsan, Geoje | Classified by the site operator |
Product · South Korea
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in South Korea. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The market · South Korea
Where an Ex phone is used in South Korea
Operators and classified areas drawn from the SAMS South Korea market guide.
Operators, EPCs and contractors
- SK Energy
- SK Innovation’s refining arm, based at Ulsan
- GS Caltex
- Major refiner and petrochemical producer at Yeosu
- S-Oil
- Saudi Aramco-affiliated refiner based at Onsan, Ulsan
- Hyundai Oilbank
- Refining and petrochemical operations at Daesan
- Lotte Chemical
- Major petrochemical producer across multiple complexes
- Hyundai Heavy Industries
- The world’s largest shipbuilder, with LNG and tanker construction at Ulsan
Industrial areas and sites
- Ulsan
- Korea’s largest industrial complex: refining, petrochemicals and shipbuilding together
- Yeosu
- Major petrochemical complex on the south coast
- Daesan
- Petrochemical complex on the west coast
- Onsan
- Refining and non-ferrous smelting zone within greater Ulsan
- Geoje
- Major shipbuilding yards constructing LNG carriers and offshore platforms
Field notes · South Korea
More about South Korea that matters for portable equipment
South Korea: climate and equipment wear
Most rainfall is concentrated in the summer months, which matters for outdoor equipment: ingress protection and condensation resistance are worth checking for devices used across the monsoon season.
South Korea: projects and investment
Ulsan opened the country's first hydrogen car charging station in 2009 and the first hydrogen ship charging station at Jangsaengpo Port in 2021, and a Green Hydrogen Town project is in progress, adding hydrogen-classified areas.
South Korea: background
Ulsan was chosen as a Special Industrial Zone in 1962 and became a city in 1963, which is why large refining, petrochemical and shipbuilding sites sit close together on its coast.
The term · intrinsically safe
What “intrinsically safe” means for a smartphone
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In South Korea. Rounds at Ulsan, where refining, petrochemicals and shipbuilding share one integrated zone, are long and crowded with contractors. An intrinsically safe handheld lets an inspector photograph, log and communicate on the route without leaving the area, and a long-battery-life device suits the scale of sites.
The route · supply
Sourcing the IS-04Z1 for South Korea
Nothing can be bought for South Korea today: the IS-04Z1 is pre-launch, and SAMS will supply end users through authorised distributors once certificates exist. What a buyer can do now is take the specification, ask for the written certification schedule and arrange a safe-area evaluation, so that the right local channel contacts you at launch.
- 01
Request the datasheet
The technical specification, marking target and conditions of use, sent by email.
- 02
Ask for the certification schedule
Which certificates are in progress, in what order, and what is still to be confirmed.
- 03
Evaluate in a safe area
Evaluation units can be used for connectivity, MDM enrolment and workflow testing outside classified areas.
- 04
Register for launch
Tell us the site, zone, gas group and quantity so the right authorised distributor can contact you.
Questions · South Korea
Frequently asked questions
Can we buy an intrinsically safe mobile phone in South Korea today?
Not yet. The IS-04Z1 is pre-launch and its certification is still in progress ahead of a Q4 2026 launch. No unit goes into a classified area before the certificate covering it exists. The datasheet, the certification schedule and safe-area evaluation units are available now.
What does an intrinsically safe mobile phone in South Korea cost?
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
What does ‘intrinsically safe’ mean for the IS-04Z1?
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
Which sites in South Korea does this cover?
The market guide for South Korea covers Ulsan, Yeosu, Daesan, Onsan, among others. Site-level pages are linked below.
How will SAMS supply South Korea?
Through authorised distributors once certificates exist. Until then SAMS can send the datasheet and certification schedule and arrange safe-area evaluation units.
Is hydrogen changing hazardous-area requirements in Ulsan?
Ulsan has opened hydrogen charging stations and is developing a Green Hydrogen Town, so hydrogen gas groups may appear in new classified areas. Always check a device's gas group marking against the area classification drawing rather than assuming a general Zone 1 rating is enough.
How does Korean weather affect handheld devices used outdoors?
Summers bring concentrated heavy rainfall and humidity, and winters can be cold, so look at the operating temperature range, water ingress rating and glove-friendly touch operation. Coastal sites at Ulsan also bring salt air, which can affect ports and contacts.
Does the handset support Korean as well as English?
Android 16 carries both on one build, and operations at Korean sites run predominantly in Korean with English for international contractors and documentation. Check the language pack and the keyboard layout you require during an evaluation unit trial.
Related guides
Keep exploring
More on South Korea, and on other places in South Korea.
Rugged Mobile Phone in South KoreaSame place, different guide
Hazardous Area Mobile Phone Distributor in South KoreaSame place, different guide
IECEx Mobile Phone Supplier in South KoreaSame place, different guide
Industrial Mobile Phone in South KoreaSame place, different guide
ATEX and IECEx Mobile Phone in South KoreaSame place, different guide
Ex-Proof Mobile Phone Supplier in South KoreaSame place, different guide
South Korea market guideCertification route and regulators
All guides for South KoreaEvery route we cover
Certification statusWhat is in progress
Enquiry · South Korea
Ask about the IS-04Z1 for South Korea
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Enquiry · South Korea
Launching Q4 2026
Planning for South Korea?
Name the site and the operator and we will send what is available before launch.