A hand-held mobile communication device, such as smart telephone, alone or in protective case, incorporating sensors and signal conditioning modules for measuring signals from external sources of electromagnetic radiation (EMR) in different spectral ranges. These include detector monitoring EMR that pose potential health hazards or may interfere with various electronic devices. Other integrated EMR sensor is a photodiode for the ultraviolet detection to monitor the user's sun exposure and a thermal infrared detector for non-contact measurement of temperature of humans or inanimate objects. This detector in combination with a digital camera and a pattern recognition signal processing allows accurate non-contact measuring temperatures at specific location.