Hot, wet climate
The climate is tropical monsoon with temperatures often above 40 C and a record flood in 2007, so low-lying sites need weather planning.
Villahermosa · IECEx
IECEx Mobile Phone in Villahermosa
Villahermosa's airport was inaugurated on 2 May 1979, has a single 2,200 m runway and has offered flights to Houston and Panama City aimed largely at the oil industry. Fields such as Ogarrio lie nearby and the Olmeca refinery at Dos Bocas is in the state, so many hazardous-area workers are based here. This page explains what to look for in an IECEx mobile phone for Villahermosa, 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 topicIECEx
DeviceMobile Phone
RouteSpecification
WhereVillahermosa
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Villahermosa: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
At a glance · IECEx
Checklist: IECEx mobile phone for Villahermosa
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Certificate of conformity | Number checkable on the IECEx online register | In progress; not issued |
| Standards edition | The IEC 60079 edition the certificate cites | Stated on the certificate when issued |
| Schedule of conditions | Limits of use, batteries and accessories | Published with the certificate |
| Where it applies | Villahermosa: Oil and gas production facilities, Refinery process units (Olmeca, Dos Bocas), Pipeline and storage facilities | Classified by the site operator |
Product · Villahermosa
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 Villahermosa. 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 site · Villahermosa
Villahermosa at a glance: who is there, what is classified
A short profile of the site and the kinds of classified area that matter for portable equipment.
Operators and companies on site
- Pemex
- Oilfield service contractors
Classified areas to expect
- Oil and gas production facilities
- Refinery process units (Olmeca, Dos Bocas)
- Pipeline and storage facilities
Local conditions · Villahermosa
Conditions in Villahermosa that affect handheld equipment
Regional hub
Offices, warehouses and service firms concentrate in the city, with fields and plants spread across the surrounding lowlands.
Field notes · Villahermosa
More about Villahermosa that matters for portable equipment
Villahermosa: geography and layout
The city is about 50 km south of the Gulf coast and 904 km southeast of Mexico City, between the Grijalva and Carrizal rivers, at an average elevation of about 10 m above sea level.
Villahermosa: industry on the ground
Villahermosa, capital of Tabasco, has become a hub for oil and gas operations in southern Mexico, alongside its agricultural base of cacao, sugarcane, bananas and rice.
Villahermosa: climate and equipment wear
The climate is tropical monsoon, with spring and summer temperatures reaching above 40 C, and a short humid winter with daytime highs around 28 C, which stresses batteries and enclosures.
Villahermosa: climate and equipment wear
Tabasco, the state around Villahermosa, has plentiful rainfall all year and frequent flooding, especially in September and November, so drainage, access and equipment protection are routine planning points.
The term · IECEx
What “IECEx” means for a smartphone
IECEx is the international scheme for certifying equipment used in explosive atmospheres. A certificate of conformity is issued by an accredited certification body against a specific edition of the IEC 60079 standards and carries a schedule of conditions of safe use. It is not a legal requirement in most countries on its own, but many national schemes accept it as the technical basis.
The IECEx certificate for the IS-04Z1 is in progress and has not been issued. The marking target is Ex ib IIC T4, the intrinsic safety concept for Zone 1 gas with the hardest gas group (IIC) and a 135 °C temperature class.
In Villahermosa. International contractors and service firms working with Pemex in Tabasco often use IECEx as a common reference across projects. The scheme provides a certificate of conformity with a schedule of conditions that a reviewer can compare with a unit's classification. IECEx certification for the IS-04Z1 is in progress; no certificate is issued.
The route · specification
Specifying an IECEx mobile phone for Villahermosa
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 · Villahermosa
Frequently asked questions
Can we buy an IECEx mobile phone in Villahermosa 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 IECEx mobile phone in Villahermosa 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.
Does the IS-04Z1 hold an IECEx certificate?
No. The IECEx certificate is in progress and has not been issued. SAMS will publish the number when it exists.
Which areas at Villahermosa would use it?
Likely candidates are oil and gas production facilities, refinery process units (olmeca, dos bocas), pipeline and storage facilities. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
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 oil and gas facilities are near Villahermosa?
It is described as a hub for southern Mexico's oil and gas operations, with offices, service firms and field facilities across Tabasco. Confirm the specific facility and operator, since classified areas are defined site by site.
How hot does it get for equipment in Villahermosa?
Spring and summer temperatures can exceed 40 C with high humidity, so devices need good thermal margins and a suitable temperature class. Confirm operator guidance on outdoor equipment and keep devices out of direct sun.
How does flooding risk affect equipment choice?
Low-lying sites need weather planning, given a record flood in 2007 and a hot, wet climate. IP68 is designed to withstand water immersion and dust, but it is not explosion protection. Check the certified ambient range and store devices dry between shifts.
Related guides
Keep exploring
Other guides for Villahermosa, other places in Mexico, and the pages behind them.
Ex-Proof Mobile Phone in VillahermosaSame place, different guide
Hazardous Area Mobile Phone in VillahermosaSame place, different guide
ATEX and IECEx Mobile Phone Distributor in VillahermosaSame place, different guide
Industrial Mobile Phone Distributor in VillahermosaSame place, different guide
Intrinsically Safe Mobile Phone in VillahermosaSame place, different guide
Explosion-Proof Mobile Phone Distributor in VillahermosaSame place, different guide
ATEX and IECEx Mobile Phone Distributor in Ciudad del CarmenElsewhere in Mexico
Mexico market guideCertification route and regulators
All guides for MexicoEvery route we cover
Certification statusWhat is in progress
Enquiry · Villahermosa
Ask about the IS-04Z1 for Villahermosa, Mexico
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 · Villahermosa
Launching Q4 2026
Planning for Villahermosa?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.