In the high temperature environment, the temperature of the mobile phone itself is high, and the frequency reduction of the processor will be more frequent. At this time, the performance of the mobile phone will be seriously constrained. High temperature is also one of the reasons that shorten the service life of mobile phones. Mobile phones are vulnerable to damage in high temperature environment, because high temperature will make plastic parts, internal circuit boards and batteries of mobile phones deform or even melt, which will lead to battery explosion in serious cases. But some special working groups will deal with high temperature, and it is inevitable for outdoor workers to use mobile phones outdoors in summer. Is there a domestic mobile phone that has better heat resistance? Domestic conquest S12 can work normally in high and low temperatures ranging from - 30 C to 60 C. It also has IP68 standard of 1.5 m water-proof and 99.99% dust-proof. The fuselage adopts two-color injection moulding technology, hard rubber support structure, soft rubber buffer channel, breaking through drop test of 4 corners of 6 surfaces of 1.5 m. It is a high temperature resistant and fall-proof product. Domestic mobile phones are suitable for workers exposed to the sun for a long time in high temperature environment.