A −20°C to +60°C Factory Phone Specification: Ambient and Workload

A factory request for a phone operating from −20°C to +60°C needs an environmental profile. A room temperature, a sun-heated mount and a phone under continuous workload are not interchangeable test conditions.

Describe the installation

Record whether the handset is carried, docked or mounted, whether sunlight reaches it and whether it is charging. Identify nearby heat sources and the ventilation available around any enclosure. Ask a test provider how the setup should be represented.

Specify active function

List screen brightness, data traffic, camera or GNSS use and the required duration. Ask the manufacturer about thermal controls and functions that may be limited. Separate normal operation from safe charging and switched-off storage ranges.

Validate the final build

Require hardware revision, battery and software identity in the report. Record each endpoint result and any temperature transitions. A component's rated limit should not be copied into a finished-phone claim without system evidence.

Phonemax comparison

The X5 listing provides dimensions of 146.0 × 71.7 × 15.5 mm and 238 g for installation planning. It does not establish the requested −20°C to +60°C working range. Obtain model-specific evidence and appropriate charging limits before approving the device for that factory environment.