When public utility practitioners dig trenches, mobile phones are often submerged in water. When building and repairing cables, they also need to deal with harsh weather conditions. When changing devices over a long distance, a three-proof mobile phone that is always on call is the best choice.
Leading mobile communication devices have GPS, GLONASS, AGPS tracking and positioning functions, support dial automation, mileage tracking and scheduling, so as to achieve precise positioning and route finding. The mobile phone is equipped with a PTT custom shortcut key, which can activate the required application or contact emergency contacts with one click, ensuring timely communication and personnel safety.