IS541.1
The world's first 5G smartphone with 450 MHz support for Zone 1/21 enables mission-critical communication even when public mobile networks are unavailable. Built on the proven IS540.1 platform, it combines a 6-inch FHD display, a high-performance Qualcomm® chipset, and a replaceable 4,400 mAh battery for maximum reliability during continuous shift operation. The 16-pin ISM interface provides secure connectivity for approved accessories such as PTT headsets or remote speaker microphones.

Advantages
- World's first 5G smartphone with 450 MHz support for Zone 1/21
- Blackout-resilient communication for critical infrastructure
- Extended frequency range 450 MHz B31/B72 + n31/n72
- Expanded memory 12/256 GB in preparation for AI applications
- Amplified loudspeaker for noisy work environments
- Replaceable 4400 mAh battery
- Programmable side key (e.g. for PoC/PTT)
- Programmable red key (e.g. for lone worker protection/SOS)
Technical features
| Operating system | Android™ 14 |
|---|---|
| Processor | Qualcomm® QCM6490 Octa Core |
| Memory | 12 GB RAM | 256 GB internal memory | microSD card supported |
| Frequencies |
2G GSM 850/900/1800/1900 MHz 3G WCDMA B1/2/4/5/8 4G LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12 MFBI/B13/B14/B17/B20/B25/B26/B28/B29/B30/B31/B66/B71/B72 4G LTE-TDD: B38/B39/B40/B41/B42/B43/B48 5G NR: n1/n2/n3/n5/n7/n8/n12/n14/n20/n25/n28/n30/n31/n38/n40/n41/n48/n66/n71/n72/n77/n78/n79 |
| Dimensions | Size: 180,0 x 84,9 x 20,6 mm | Weight: 435,6 g |
| Display | 6,0" (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 |
| Connectivity |
Wi-Fi® 6: IEEE 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 Near Field Communication |
| Types of protection | IP68 dust-/waterproof | MIL-STD 810H | Usable from -20 °C to +55 °C |
| Interfaces |
USB-C charging contacts ISM interface |
Further features
Multifunctional, lateral ISM interface for a quick and safe connection of additional devices
Function key red (function key assignable for different 3rd party application; e.g. loneworker protection)
Amplified loudspeaker
Accelerometer, Gyroscope, Light, Magnetic, Proximity, Pressure sensors
Dual-SIM (Nano-SIM + eSIM)
USB-C, Desktop Charger, Multi Charger
Approvals

approved
II 2G Ex ia IIC T4 Gb
II 2D Ex ia IIIC T135°C Db

approved
Ex ia IIC T4 Gb
Ex ia IIIC T135°C Db
Contents
- Smartphone
- Antenna + colour coding set
- Battery
- USB-C Cable
- Power Adapter universal
- Screwdriver
- Display Protection Foil
- Safety Instructions




























































