Japan: geography and layout
The Keiyo Industrial Zone runs along the north-eastern coast of Tokyo Bay through eight cities in Chiba Prefecture, from Urayasu to Futtsu, including Chiba, Kisarazu and Ichihara.
Japan · explosion proof
Explosion-Proof Smartphone in Japan
The IS-04Z1 is an intrinsically safe handset for people who cross into classified areas in Japan every shift: refinery and petrochemical-complex operators, LNG terminal crews, inspection engineers, and the HSE and telecoms teams who equip them. This page explains what to look for in an explosion proof smartphone for Japan, and where the IS-04Z1 stands against that list today.
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 topicexplosion proof
DeviceSmartphone
RouteSpecification
WhereJapan
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Japan: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
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 · explosion proof
Checklist: explosion proof smartphone for Japan
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Protection concept | Flameproof (Ex d) or intrinsic safety (Ex i) | Intrinsic safety, level ib |
| Zone suitability | Zone 1 gas and Zone 21 dust | Design target for Zone 1 and 21 |
| Certificate | Number, issuing body and schedule of conditions | In progress; not issued |
| Where it applies | Japan: Chiba / Sodegaura, Yokkaichi, Sakai | Classified by the site operator |
Product · Japan
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 Japan. 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 · Japan
Where an Ex phone is used in Japan
Operators and classified areas drawn from the SAMS Japan market guide.
Operators, EPCs and contractors
- ENEOS
- Japan’s largest oil refiner and petroleum products company
- Idemitsu Kosan
- Major refiner and petrochemical producer
- Cosmo Oil
- Refining and petrochemical operations nationwide
- JAPEX
- Japan Petroleum Exploration — domestic upstream production
- Mitsubishi Chemical
- Major petrochemical producer with complexes including Kashima
- JERA
- Japan’s largest power generator, with major LNG and thermal assets
Industrial areas and sites
- Kashima
- Large integrated petrochemical complex in Ibaraki
- Mizushima
- Major refining and petrochemical complex in Okayama
- Chiba / Sodegaura
- Petrochemical and refining complex on Tokyo Bay
- Yokkaichi
- One of Japan’s oldest and largest petrochemical complexes, Mie prefecture
- Sakai
- Refining and petrochemical operations near Osaka
Field notes · Japan
More about Japan that matters for portable equipment
Japan: rules and approvals
As of July 2026 the Ministry of Health, Labour and Welfare lists eight registered examination bodies for this equipment, including TIIS and several bodies outside Japan.
Japan: rules and approvals
Since a January 2017 notice an IECEx test report can be submitted as the applicant's prior test results, and a certificate is valid for three years.
Japan: logistics and access
The Port of Nagoya in Ise Bay is described as Japan's largest and busiest trading port, handling about 10% of the country's trade by value, and has been run by the Nagoya Port Authority since 1951.
The term · explosion proof
What “explosion proof” means for a smartphone
“Explosion proof” is the phrase most buyers use for equipment that may be taken into a classified hazardous area. Strictly, it covers several protection concepts: a flameproof enclosure (Ex d) contains an internal explosion, while intrinsic safety (Ex i) limits electrical energy so that an ignition cannot start. Phones are normally intrinsically safe, because a flameproof handset would be too heavy to carry all shift.
The IS-04Z1 uses intrinsic safety, with a marking target of Ex ib IIC T4, and is designed for Zone 1 and Zone 21. It is pre-launch, certification is in progress and no certificate has been issued.
In Japan. Explosion-proof is the everyday phrase, but in Japanese complexes the protection concept matters. Flameproof Ex d suits some fixed equipment, while an intrinsically safe handset suits an operator crossing into classified areas every shift. The IS-04Z1 is designed around intrinsic safety for Zone 1 and Zone 21 duty.
The route · specification
Specifying an explosion proof smartphone for Japan
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Check on the paper
- Marking
- Equipment group, category, protection concept, gas group and temperature class, matched to the area drawing.
- Certificate and schedule
- A certificate number, issuing body and the schedule of conditions, not a brochure claim.
- Standards edition
- The IEC 60079 or national standard edition the certificate was issued against.
Check for the IS-04Z1
- Marking target
- II 2 G Ex ib IIC T4: a target, not yet a certificate.
- Certificate status
- IECEx, ATEX, UKEX and NEC 500 in progress; none issued.
- Operator approval
- Separate from the certificate and handled with the site operator.
Questions · Japan
Frequently asked questions
Can we buy an explosion proof smartphone in Japan today?
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
What does an explosion proof smartphone in Japan cost?
There is no list price yet. SAMS gives indicative pre-launch pricing in writing, against a stated quantity and site, and does not commit to a lead time before certification completes.
Is the IS-04Z1 explosion proof or intrinsically safe?
It is intrinsically safe (marking target Ex ib IIC T4), which is the usual way to make a phone for hazardous areas. It is not a flameproof (Ex d) design, and certification is still in progress.
Which sites in Japan does this cover?
The market guide for Japan covers Kashima, Mizushima, Chiba / Sodegaura, Yokkaichi, among others. Site-level pages are linked below.
Is intrinsically safe the same as explosion proof?
Not exactly. Explosion proof is a broad everyday term; intrinsic safety is one protection concept, which limits energy so ignition cannot occur. Flameproof (Ex d) is a different concept that contains an explosion. The IS-04Z1 is intrinsically safe by design.
What radio approval does a phone need in Japan?
Radio equipment is covered by the Telec technical conformity scheme, and the certified-products database can be searched to check a model. Requirements depend on the radio technologies in the device, so confirm with a registered certification body before importing.
Can an IECEx report speed up approval in Japan?
Since 2017 an IECEx test report can be submitted as the applicant's prior test results, which can reduce testing, but the Japanese type examination certificate is still required, and it is valid for three years. Confirm the reports accepted with the chosen examination body.
Will a handset cope with typhoon-season humidity and salt air?
The IS-04Z1 has IP68 sealing, which helps with water, dust and salt-laden air. That is an ingress rating only. Ask for the datasheet's operating ranges and test a unit during a humid season round at a coastal site.
Related guides
Keep exploring
Other guides for Japan, other places in Japan, and the pages behind them.
IECEx Mobile Phone in JapanSame place, different guide
Hazardous Area Mobile Phone in JapanSame place, different guide
Ex-Proof Mobile Phone in JapanSame place, different guide
ATEX and IECEx Mobile Phone Distributor in JapanSame place, different guide
Industrial Mobile Phone in JapanSame place, different guide
Rugged Mobile Phone Supplier in JapanSame place, different guide
Japan market guideCertification route and regulators
All guides for JapanEvery route we cover
Certification statusWhat is in progress
Enquiry · Japan
Ask about the IS-04Z1 for Japan
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Enquiry · Japan
Launching Q4 2026
Planning for Japan?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.