640×512 Thermal Phone Claims: Verify Native Resolution

A 640 × 512 thermal-phone claim should identify the native thermal detector, not just an exported image's dimensions. This article does not verify a Phonemax 640 × 512 handset. The current P20 Pro thermal graphic lists 256 × 192 instead.

Write the acceptance condition precisely

640 × 512 equals 327,680 pixels; 256 × 192 equals 49,152. If the requirement is a native 640 × 512 detector, a larger exported or interpolated file does not by itself demonstrate compliance. Request the module specification for the exact phone being quoted.

Compare these records before approving a sample

• The thermal module's native array dimensions.
• The application's image mode and any enhancement or upscaling.
• The saved file dimensions and the information retained in that file.
• The lens field of view and the target the buyer needs to inspect.

Do not turn pixel arithmetic into a performance guarantee

A higher pixel count alone does not prove a proportional improvement in detection distance or temperature accuracy. Review the actual target and optics with the supplier. An example from another camera maker is not evidence for the delivered handset.

The general resolution guide explains how target detail affects a buying decision. This page addresses the narrower 640 × 512 native-array requirement and the records needed to substantiate it.

Sources

P20 Pro product specifications; FLIR: detector arrays, optics and task requirements. No independent resolution test is reported.