Sea conditions
Monsoon seasons affect access and weather windows.
The Masela block, east of Timor island, was described as likely to become Indonesia's biggest deepwater gas project, with over 10 trillion cubic feet of gas and an estimated 14 to 19 billion dollars of investment. Platforms, FPSOs and drilling rigs are classified hazardous areas. This page explains what to look for in an Ex-proof smartphone for Indonesian offshore oil and gas fields, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Indonesian offshore oil and gas fields: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
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. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
| 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 | Indonesian offshore oil and gas fields: Offshore production platforms, FPSO process and storage areas, Drilling rigs | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Indonesia Offshore Rigs. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Monsoon seasons affect access and weather windows.
Reports describe an FPSO designed for 1 billion standard cubic feet of gas a day, in about 2,000 metres of water, with first steel cut in July 2026 and commercial production targeted for the fourth quarter of 2028.
About 80 per cent of people in the Natuna islands are of Malay origin, and Terengganuan Malay is used alongside Indonesian, which matters for hiring and site communication near the offshore gas area.
The Mahakam block, in East Kalimantan, was reported to supply around 30 percent of Indonesia's natural gas, about 1.7 billion cubic feet a day in mid-2013, plus condensate.
The East Natuna gas field in the South China Sea is believed to hold about 46 trillion cubic feet of proven gas, one of the biggest reserves in Southeast Asia, though development has been long delayed.
The Batam Industrial Development Authority, now BP Batam, was created by a 1973 presidential decree to manage a 415 square kilometre industrial complex for heavy industry, where previously only Pertamina was based.
“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 Indonesian offshore oil and gas fields. An offshore marking check would read the zone for each deck, wellhead area or process module against the label. Hydrocarbon gas with some hydrogen-bearing streams may appear, so reviewers read the actual drawings. The IS-04Z1 target marking is II 2 G Ex ib IIC T4, which is unapproved.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
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.
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.
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.
Likely candidates are offshore production platforms, fpso process and storage areas, drilling rigs, wellhead areas. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
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.
Rigs are normally supplied from shore bases by supply boat or helicopter, so deliveries follow set schedules and weight limits. Plan spare batteries and chargers well ahead, and confirm customs and radio type-approval needs for each landing point.
Rigs typically follow the standards of their flag state or classification society, often IECEx or ATEX based, together with the operator's own rules. Confirm with the rig operator which certification marks it accepts for portable devices and how permits to work are issued.
Crews and equipment move by supply vessel or helicopter, so replacing or approving a device on the platform is slow. Operators therefore expect certification and approval onshore. Ask the operator or its contractor for the approval route. Confirm with them.
More on Indonesia Offshore Rigs, and on other places in Indonesia.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Name the site and the operator and we will send what is available before launch.