Going back to the past two years, the electronic products that have been with us all the time have developed rapidly. Countless people shouted "really fragrant" AirPods earphones, OPPO and Vivo launched the mechanical lift phone camera, and strange black technology has been coming to us. By the side, even the Apple products that have dominated in recent years are not guaranteed at the end of this year. At almost every launch, we feel that the products in our hands have become antiques. From folding phones to 5G phones, in 2019, if you want to update your device, be sure to pay attention to the following five areas.