(On the 10th day of the price reduction of Unicom's iPhone, the 16G version of 3GS was launched. It took a few days to reach the conclusion that countless people have reached. The iPhone is so easy to use! But there are also some small problems, so we managed all the problems through a day of hard work, hahaha. The search process is painful and happy. Here's a brief summary. I hope it will be helpful to new iPhone players like me.)