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 · intrinsically safe
Intrinsically Safe Mobile Phone Distributor 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. 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. Distribution partners for South Korea are being identified ahead of the Q4 2026 launch of the IS-04Z1.
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
RouteDistribution
WhereSouth Korea
Short answer. South Korea has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Status: pre-launch. IECEx, ATEX, UKEX and NEC 500 certification is in progress and no certificate has been issued; launch is planned 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: Ulsan, Yeosu, Daesan | 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: 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: industry on the ground
Ulsan is the industrial centre of the south-east, hosting the world's largest car assembly plant, the world's largest shipyard and the world's third-largest oil refinery, which makes it a dense mix of process and manufacturing hazards.
South Korea: geography and layout
The country has no proven oil reserves; the Donghae-1 gas field produced between 2004 and 2021 and east-coast gas exploration started in 2024, so most hazardous-area work is downstream rather than upstream.
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 · distribution
Distributing the IS-04Z1 in South Korea
Distribution of the IS-04Z1 is by authorised partners only, and SAMS has not yet granted a territory for South Korea. Each application is reviewed on its merits. Because opening a certified Ex handset in an ordinary workshop invalidates its certificate, the partner must be able to support and service the device locally.
What SAMS looks for in a partner
- Operator relationships
- Existing supplier registrations or a clear route to them with the main operators and contractors in South Korea.
- Ex-competent staff
- People who understand zone classification, markings and the conditions of a certificate.
And equally important
- Local-language support
- Documentation, training and helpdesk in the languages the workforce uses.
- Service capability
- Spares, battery replacement and repair routed through SAMS-approved channels.
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 do I become a SAMS distributor for South Korea?
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for South Korea.
Where are the main hazardous-area clusters in South Korea?
Ulsan is the best-known, with a very large refinery, petrochemical works and shipyard, and the country's LNG import terminals are another cluster. Because supply is almost entirely imported, fuel storage and terminal sites are central; confirm each site's classification with its operator.
Do intrinsically safe phones need Korean certification for use on site?
Operators may ask for Korea's own national certification alongside, or instead of, international certificates such as IECEx or ATEX. Requirements differ by site and contractor, so ask the operator's safety team which marking and approvals it accepts before ordering devices.
Is the IS-04Z1 meant for shipyard tank work at Geoje?
The same Zone 1 specification is designed to cover tank-entry and marine-fuel hazards alongside refinery risk. Certification is in progress and no certificate exists. Confirm the exact area, gas group and permit rules with the yard's safety officer before any use.
Related guides
Keep exploring
Related guides for South Korea and for South Korea.
Industrial Mobile Phone Distributor in South KoreaSame place, different guide
ATEX and IECEx 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
Ex-Proof Mobile Phone Supplier in South KoreaSame place, different guide
Rugged Mobile Phone 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
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Enquiry · South Korea
Launching Q4 2026
Planning for South Korea?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.