Take professional field capability anywhere with the Phonemax R4 GT Thermal Imaging Rugged Smartphone, a compact 4G rugged phone built for users who need more than a standard smartphone. Combining 256 × 192 thermal imaging, 20MP infrared night vision, a 64MP autofocus main camera and a durable compact body, the R4 GT is designed for equipment inspection, building checks, outdoor work, low-light documentation and everyday field communication.
The integrated 256 × 192 thermal camera helps users identify temperature differences in equipment, surfaces and building components, making the phone useful for maintenance, inspection and troubleshooting tasks. Thermal results can vary depending on distance, surface emissivity, reflections and environmental conditions, so the device should not be used as a substitute for certified medical or safety measurement equipment.
For work after dark or in low-light environments, the dedicated 20MP infrared night vision camera allows users to capture and document scenes that are difficult to see with a conventional camera. Combined with the 64MP autofocus main camera and 13MP front camera, the R4 GT offers a versatile imaging system for both professional field use and everyday photography.
Performance is powered by the MediaTek Helio G99 octa-core processor up to 2.2GHz, paired with 8GB RAM and 128GB internal storage for responsive multitasking, apps and field data. Storage can be expanded by up to 512GB with a compatible memory card. The phone runs Android 14, providing a familiar smartphone experience in a compact rugged device.
The 4.3-inch 540 × 1200 display keeps the phone compact and easy to carry, while the 3200mAh battery supports 18W wired fast charging and 15W wireless charging for flexible charging in the office, vehicle or field.
Built for demanding environments, the R4 GT carries IP68, IP69K and MIL-STD-810H rugged protection ratings, helping protect the device against dust, water and tough working conditions when used within the product’s rated limits. Its compact dimensions of 121 × 59.2 × 18.3 mm and weight of approximately 190 g make it easier to carry than many oversized rugged smartphones.
For field teams, the phone includes a customizable PTT key that can be configured for compatible push-to-talk workflows, making communication more convenient in maintenance, inspection, outdoor and emergency environments. Additional features include NFC, Bluetooth 5.0, Wi-Fi 5, OTG, Face ID, and multi-system positioning with GPS, GLONASS, BeiDou and Galileo.
Whether you are inspecting equipment, documenting low-light environments, working outdoors, navigating job sites or coordinating with a field team, the Phonemax R4 GT rugged smartphone combines thermal imaging, infrared night vision, durable construction and practical smartphone features in one compact device.
✓ Built for Tough Jobs & Real-World Conditions
✓ Thermal Imaging for Fast Inspection & Troubleshooting
✓ 20MP Infrared Night Vision for Low-Light Work
✓ IP68/IP69K & MIL-STD-810H Rugged Protection
✓ Compact Design for Field & Outdoor Use
✓ Fast 18W Wired + 15W Wireless Charging
✓ Customizable PTT Key for Field Communication
