Monsoon climate
Mumbai has a tropical wet and dry climate with intense rain from June to September, so outdoor devices need good water and corrosion protection.
Mumbai India · Ex-proof
Ex-Proof Mobile Phone in Mumbai India
The Telecommunication Engineering Centre has a regional centre in Mumbai that tests telecom products and issues service test certificates. Refining, petroleum terminals and chemical plants create Zone 1 areas, and crude arrives from offshore fields such as Mumbai High. This page explains what to look for in an Ex-proof mobile phone for Mumbai, Maharashtra, 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 topicEx-proof
DeviceMobile Phone
RouteSpecification
WhereMumbai India
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Mumbai, Maharashtra: 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. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
At a glance · Ex-proof
Checklist: Ex-proof mobile phone for Mumbai, Maharashtra
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Ex marking | Group, category, protection concept, gas group, temperature class | II 2 G Ex ib IIC T4 (target) |
| Gas group | IIA, IIB or IIC matched to the area drawing | IIC (target) |
| Temperature class | T-class below the ignition temperature of the gas | T4, 135 °C (target) |
| Where it applies | Mumbai, Maharashtra: Refinery process units, Petroleum storage terminals, Marine oil handling | Classified by the site operator |
Product · Mumbai India
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 Mumbai India. 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 · Mumbai, Maharashtra
Mumbai, Maharashtra: where the IS-04Z1 would work
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Operators and companies on site
- Bharat Petroleum
- Hindustan Petroleum
Classified areas to expect
- Refinery process units
- Petroleum storage terminals
- Marine oil handling
- Chemical plants
Local conditions · Mumbai, Maharashtra
Site conditions at Mumbai, Maharashtra: what wears and what limits equipment
Dense urban setting
The refineries sit in the Mahul-Chembur area within the metropolitan region, which Wikipedia notes is surrounded by a number of chemical plants, so site access and security controls are normally strict.
Field notes · Mumbai, Maharashtra
More about Mumbai, Maharashtra that matters for portable equipment
Mumbai, Maharashtra: geography and layout
Mumbai has a deep natural harbour on the Konkan coast, a population of almost 12.5 million in 2011 and a metropolitan region of over 20 million.
Mumbai, Maharashtra: climate and equipment wear
The climate is tropical wet and dry, with a nearly rainless stretch from October to May and a south-west monsoon from June to September that peaks in July.
Mumbai, Maharashtra: climate and equipment wear
Mumbai is prone to flooding during monsoons, and occasionally experiences tropical cyclones, so site access and logistics can be disrupted.
Mumbai, Maharashtra: industry on the ground
Mumbai's industrialisation after the 1960s expanded petrochemicals, electronics and automobiles, and major refineries such as the Mumbai Refinery at Trombay and the BPCL refinery were established.
The term · Ex-proof
What “Ex-proof” means for a smartphone
“Ex-proof” is shorthand for equipment carrying an explosion-protection marking (the Ex mark) that matches the area it enters. The marking states the protection concept, gas or dust group and temperature class, and it must be backed by a certificate issued by a recognised body, so a phone described as Ex-proof should come with a certificate number you can check.
The IS-04Z1 is designed to carry the marking II 2 G Ex ib IIC T4. That is a target: certification is in progress, no certificate has been issued, and SAMS will publish the certificate numbers when they exist.
In Mumbai, Maharashtra. A marking check at Mumbai should relate the device to refinery process units, petroleum storage terminals, marine oil handling and nearby chemical plants. Different streams can sit in different gas groups. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, and the operator's classification decides.
The route · specification
Specifying an Ex-proof mobile phone for Mumbai India
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 · Mumbai India
Frequently asked questions
Can we buy an Ex-proof mobile phone in Mumbai India 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 Ex-proof mobile phone in Mumbai India cost?
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
What Ex marking will the IS-04Z1 carry?
The marking target is II 2 G Ex ib IIC T4. It becomes a marking only when the certificate is issued; until then it is a design target.
Which areas at Mumbai, Maharashtra would use it?
Likely candidates are refinery process units, petroleum storage terminals, marine oil handling, chemical plants. 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.
How do I ship equipment to Mumbai?
Jawaharlal Nehru Port is the main container port for the region, with 30 container freight stations and links to inland depots. Use an experienced freight forwarder and confirm customs documents in advance.
How does the Mumbai monsoon affect equipment and logistics?
Rain is heavy from June to September, peaking in July, and monsoon floods can disrupt roads and ports. Plan deliveries and site visits outside the peak monsoon where possible, and transport devices in waterproof cases.
What should be planned for the monsoon at Mumbai sites?
Intense rain from June to September makes water and corrosion protection important for outdoor work. A sealed IP68 design helps, but users should still check seals and dry the device. Ask the operator how outdoor handheld use is managed during heavy rain.
Related guides
Keep exploring
Related guides for Mumbai India and for India.
Rugged Mobile Phone in Mumbai IndiaSame place, different guide
IECEx Mobile Phone Distributor in Mumbai IndiaSame place, different guide
Intrinsically Safe Mobile Phone in Mumbai IndiaSame place, different guide
ATEX and IECEx Mobile Phone Distributor in Mumbai IndiaSame place, different guide
Explosion-Proof Mobile Phone in Mumbai IndiaSame place, different guide
Hazardous Area Mobile Phone in Mumbai IndiaSame place, different guide
ATEX and IECEx Mobile Phone Distributor in Hazira IndiaElsewhere in India
ATEX and IECEx Mobile Phone Distributor in Mangalore IndiaElsewhere in India
ATEX and IECEx Mobile Phone Distributor in Dahej IndiaElsewhere in India
ATEX and IECEx Mobile Phone Distributor in Ankleshwar IndiaElsewhere in India
India market guideCertification route and regulators
All guides for IndiaEvery route we cover
Certification statusWhat is in progress
Enquiry · Mumbai, Maharashtra
Ask about the IS-04Z1 for Mumbai, Maharashtra, India
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 · Mumbai, Maharashtra
Launching Q4 2026
Planning for Mumbai India?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.