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i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone
The i.safe MOBILE IS541.1 is the world’s first 5G smartphone with 450 MHz support certified for ATEX and IECEx Zone 1/21 hazardous areas. Approved for atmospheres where flammable gases, vapours and combustible dusts are present, it is built for critical infrastructure operators in energy, utilities, oil and gas and chemical processing who require dependable communication even when public mobile networks are unavailable.
Built on the proven IS540.1 platform, the IS541.1 carries the higher-protection ia type of protection and expands the frequency range with 450 MHz bands B31, B72, n31 and n72 for blackout-resilient operation. A Qualcomm QCM6490 octa-core processor is paired with an enlarged 12 GB of RAM and 256 GB of internal memory, expandable by microSD, in preparation for AI applications. The 6 inch full HD Corning Gorilla Glass V3 display remains fully usable with gloves, while IP68 sealing, MIL-STD-810H durability and an operating range from -20 °C to +55 °C suit continuous shift operation.
Connectivity covers 2G, 3G, 4G LTE, an extensive set of 5G NR bands, Wi-Fi 6, Bluetooth 5.2, multi-constellation GNSS and Near Field Communication. The 16-pin ISM interface provides a secure connection for approved accessories such as push-to-talk headsets and remote speaker microphones.
A programmable side key supports push-to-talk and PoC operation, while a programmable red key enables lone worker protection and SOS alerts. An amplified loudspeaker aids communication in noisy environments and the replaceable 4400 mAh battery sustains long shifts.
IS541.1 Features
- World's first 5G smartphone with 450 MHz support certified for ATEX and IECEx Zone 1/21
- Higher-protection ia type for the most demanding gas, vapour and dust atmospheres
- 450 MHz bands B31, B72, n31 and n72 for blackout-resilient critical communication
- Qualcomm QCM6490 chipset with 12 GB RAM and 256 GB storage in preparation for AI applications
- 6 inch full HD Corning Gorilla Glass V3 display fully usable with gloves
- 16-pin ISM interface docks push-to-talk headsets and remote speaker microphones
- Programmable side and red keys for PoC, push-to-talk, lone worker protection and SOS
- IP68 sealing, MIL-STD-810H durability and replaceable 4400 mAh battery
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Product Type
Manufacturer
Certifications & Standards
Ruggedness
IP Rating
Mounting Format
Screen Size
Processor
Operating System
Country Of Manufacture
Germany
Operating system
Android 14
Processor
Qualcomm QCM6490 Octa Core
Memory
12 GB RAM | 256 GB internal | microSD supported
Display
6.0 inch (15.24 cm) Corning Gorilla Glass V3, usable with gloves
Battery
4400 mAh, 3.7 V | replaceable
Camera
48 MP AF rear | 5 MP FF front
Dimensions
180.0 x 84.9 x 20.6 mm
Weight
435.6 g
Mobile network
2G GSM; 3G WCDMA; 4G LTE-FDD and LTE-TDD including 450 MHz B31/B72; 5G NR including n31/n72
Connectivity
Wi-Fi 6 802.11 a/b/g/n/ac/e/k/r/ax/v with hotspot; Bluetooth 5.2; GPS, A-GPS, Glonass, A-Glonass, Beidou, Galileo, SBAS; NFC
SIM
Dual-SIM (Nano-SIM + eSIM)
Interfaces
USB-C; charging contacts; ISM interface (16-pin)
Power
USB-C, Desktop Charger, Multi Charger
Protection
IP68 dust and waterproof | MIL-STD-810H
Operating temperature
-20 °C to +55 °C
ATEX
II 2G Ex ia IIC T4 Gb; II 2D Ex ia IIIC T135°C Db
IECEx
Ex ia IIC T4 Gb; Ex ia IIIC T135°C Db
The i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone is designed and engineered for use in demanding environments where reliability, durability are essential. The IS541.1 supports a wide range of industries and operational applications.
Common deployment industries include: Chemical, Energy and Utilities, Food And Beverage Processing, Industrial Manufacturing, Marine And Offshore, Offshore Operations, Oil and Gas, Pharmaceutical.
Across these sectors, the IS541.1 is typically used in applications such as ATEX And Hazardous-Area Data Capture, Field Data Capture And Reporting, Lone Worker Protection, Mobile Workforce Operations, Preventive And Corrective Maintenance, Process Control And Shop-Floor Monitoring, Quality Control And Inspection, Utilities Inspection And Meter Reading.
These examples demonstrate the versatility of the IS541.1 across both industry sectors and real-world operational use cases. Its suitability extends well beyond the scenarios listed above, making it a flexible solution for a broad range of requirements.
For further information, or to assess whether the IS541.1 is appropriate for your specific application, please contact us.
The i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone comes with a Manufacturer warranty applies against defects in workmanship and materials, effective from the date of shipment (unless otherwise agreed in writing).
To receive service under this warranty, the eligible product, i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone, must be presented to RUGGED in the United Kingdom.
For more information about the i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone or to arrange repairs and services not covered by the warranty, please visit the warranty section on our website.
Request further details about the i.safe MOBILE IS541.1 ATEX Zone 1/21 Intrinsically Safe Smartphone
If you have any questions about the i.safe MOBILE IS541.1 please get in touch today, our team of technical experts are ready to assist you.
Alternative Products
Explore alternative products offering comparable features, performance, and build quality to the model you are currently viewing.
Our related solutions provide variations in configuration, functionality, and form factor to suit different application requirements. Each option has been selected to meet the same high standards of reliability and performance.
Browse the related products below to identify the most suitable fit for your deployment.
- ATEX Zone 2/22, 5G
- Android with 16-pin ISM interface
- IP68, MIL-STD-810H, replaceable battery

- ATEX Zone 1/21, 5G + 450 MHz
- 12 GB / 256 GB, ia protection
- IP68, MIL-STD-810H, ISM interface

- ATEX and IECEx Zone 1/21 certified
- Android 14 with 13-pin ISM multifunctional interface
- IP68, MIL-STD-810H and a replaceable 3600 mAh battery

- ATEX Zone 2/22 certified
- PTT/MCPTT optimised, 13-pin ISM
- IP68, MIL-STD-810H, replaceable battery

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At Rugged, our engineering and product specialists can advise on specifications, environmental suitability, mounting requirements, connectivity, and lifecycle planning to ensure the right fit for your deployment.
With extensive industry experience and a focus on reliability and performance, we help you select a solution aligned with your operational requirements.
Frequently Asked Questions
RUGGED offers free technical support for the lifetime of products you purchase. This includes help with setup, troubleshooting, and integration. Support is available online or directly from the technical team
Smartphones have become integral to many modern business environments, transcending their traditional consumer roles. Their adaptability allows them to be deployed across a wide array of sectors, from logistics and manufacturing to fieldwork and retail.
The integration of advanced features such as high-resolution cameras, GPS, and robust connectivity options facilitates tasks like inventory management, real-time data capture, and communication among dispersed teams. For businesses that operate in challenging conditions, the use of a rugged rugged SmartPhone is particularly beneficial. These devices are engineered to withstand drops, dust, water, and extreme temperatures, ensuring uninterrupted operation and reducing replacement costs.
This resilience makes them invaluable tools for maintaining productivity and efficiency in demanding work settings, clearly demonstrating how extensively SmartPhones are utilised in business today.
Absolutely, Rugged SmartPhone devices are built to run all your essential applications seamlessly. Whether you need navigation apps, communication tools, productivity suites, or entertainment, these robust smartphones offer full app compatibility. They operate on standard mobile operating systems, allowing users to download and utilise apps from their respective app stores, ensuring you have access to the same functionalities as a conventional SmartPhone.
This means you can enjoy the durability and resilience that Rugged is known for, without compromising on the smart features you rely on daily. For more information on Rugged’s range of devices, explore the selection of rugged smartphones available.
Rugged SmartPhones are indeed designed to be portable while offering exceptional durability. Many models feature a slim and lightweight design, making them easy to carry in a pocket or attach to gear without adding significant bulk. Despite their robust construction, which protects against drops, water, and dust, our devices are engineered to be convenient for everyday use and transport.
For instance, some Rugged SmartPhone models are specifically crafted with ergonomics in mind, ensuring a comfortable grip and easy handling. This focus on portability means you can take your device wherever your work or adventures lead, without compromising on protection or functionality. The balance between ruggedness and a portable form factor is a key aspect of the Rugged SmartPhone range.
Rugged smartphones are designed with versatility in mind, allowing them to connect with a wide array of accessories to maximise their utility in demanding environments. These connections can be established through several common methods, including Bluetooth for wireless peripherals like headsets or external sensors, and USB for physical connections to charging docks, data transfer devices, or specialised equipment.
The ability to connect to accessories ensures that your Rugged SmartPhone can adapt to different needs, whether it’s for enhanced communication, data capture, or operational efficiency. This flexibility is crucial for professionals who rely on their devices for more than just calls and messages, integrating them into complex workflows with vital tools and peripherals.
For a comprehensive look at the range of options available, explore the full selection of Rugged smartphones and their accessory compatibility.
Rugged Limited’s SmartPhones are engineered with security as a priority, ensuring that your device and its data remain protected even in demanding conditions. Our devices are built to withstand harsh environments, which inherently contributes to their physical security and longevity.
Beyond physical resilience, our Rugged SmartPhones incorporate features designed to safeguard your information. We understand the importance of data integrity and privacy, particularly for professionals who rely on their devices for critical tasks. Therefore, our operating systems and device configurations are optimised to provide a secure user experience, minimising vulnerabilities and protecting against unauthorised access.
For individuals and teams operating in various industries, having a secure SmartPhone is paramount. Rugged Limited is committed to delivering devices that not only perform reliably but also offer peace of mind regarding the security of your communications and data.
A Rugged smartphone from Rugged Limited is engineered for resilience, making it an ideal SmartPhone choice for individuals working in demanding industries or those who require a device that can withstand extreme conditions. These specialized devices are built with enhanced protection against drops, impacts, dust, and water ingress, far exceeding the capabilities of a typical consumer SmartPhone. This robust construction ensures consistent performance and reliability, even in harsh environments where a regular mobile phone would quickly fail.
For a comprehensive selection of our durable mobile devices, explore our range of rugged smartphones.
Yes, every Rugged SmartPhone is designed with integrated GPS functionality, ensuring reliable navigation and location tracking. This feature is crucial for professionals working in challenging environments where precise positioning is essential.
Our SmartPhones leverage advanced GPS technology to provide accurate location data, which can be vital for field operations, logistics, and emergency services. This ensures that users can always find their way, track assets, or report their location with confidence, even in remote or demanding conditions. The inclusion of GPS across our entire SmartPhone range underscores Rugged Limited’s commitment to delivering devices that offer comprehensive utility and dependable performance for all users.
Rugged smartphones from Rugged Limited are engineered to withstand extreme conditions, making them ideal for a variety of demanding applications. Unlike standard consumer devices, these SmartPhones are built with enhanced durability features, such as resistance to drops, water, dust, and extreme temperatures, ensuring reliable performance in harsh environments.
They are frequently utilised by professionals in industries such as construction, logistics, emergency services, and field work, where a reliable communication device is crucial. These robust phones often incorporate features like extended battery life, bright screens for outdoor visibility, and programmable buttons for quick access to critical functions. For those who require a durable and dependable SmartPhone solution, explore the range of rugged smartphones available to meet the toughest challenges.
The range covers intrinsically safe smartphones, rugged feature phones, Android and Windows tablets, push-to-talk over cellular radios and the world’s first Ex-certified industrial smartwatch. Devices are available in Zone 1/21 and Zone 2/22 variants to suit different hazardous area classifications. Many models share a universal ISM accessory interface, allowing barcode scanners, remote speaker microphones and push-to-talk headsets to be added for specific tasks.
i.safe MOBILE offers devices certified for ATEX and IECEx Zone 1/21, the highest risk classification for explosive gas and dust atmospheres, as well as Zone 2/22 for lower risk areas. Many devices also carry NEC 500 and EAC approvals for international use. Choosing the correct zone variant ensures the device is approved for the specific gas or dust environment in which it will operate.
The ISM interface is a universal multifunctional connector found on many i.safe MOBILE smartphones and tablets. It allows accessories such as professional barcode scanners, remote speaker microphones, push-to-talk headsets and thermal cameras to be attached, turning a single handset into a flexible field device. This modular approach reduces the number of separate tools a worker needs to carry in the field.
Yes. The Android devices are Android Enterprise Recommended and zero-touch capable, so they integrate cleanly with mobile device management platforms for remote configuration, security policies and app deployment. As an Android Enterprise Silver Partner, i.safe MOBILE meets Google requirements for certified, enterprise-grade hardware, making the devices well suited to managed fleets across large industrial sites.
Many i.safe MOBILE devices include a dedicated push-to-talk key and a programmable SOS button, supporting push-to-talk over cellular and lone worker protection workflows. The dedicated PoC radios are designed specifically to replace traditional analogue radios with secure push-to-talk over the mobile network. These features help keep teams connected and protected when working alone in hazardous or remote environments.
Zone 1/21 devices are certified for areas where an explosive gas or dust atmosphere is likely to occur during normal operation, which is the more demanding classification. Zone 2/22 devices are certified for areas where such an atmosphere is only likely to occur occasionally or for short periods. Selecting the correct range depends on the area classification of the site, so it is worth confirming the zone requirement before ordering.
Yes. i.safe MOBILE devices are independently certified to ATEX and IECEx, with many also holding NEC 500, EAC and other regional approvals. The company operates a certified quality management system and is certified to the ISO 14001 environmental management standard. This combination of independent product certification and audited manufacturing processes gives operators confidence in both safety and long-term reliability.
i.safe MOBILE is a German manufacturer and world market leader in explosion-protected mobile communications, based in Lauda-Koenigshofen. It develops and manufactures intrinsically safe phones, smartphones and tablets for use in potentially explosive atmospheres and industrial environments, with selected devices now produced entirely in Germany. The company employs more than 130 people and operates internationally through subsidiaries in Singapore and Australia and the Exloc Instruments businesses in the UK and USA.




















