Yantai Samsung Hotel

This question is difficult to answer. First of all, I declare that the following answers are only my personal views and do not represent the public. Unicom is cheap, and the signal is not as good as mobile. If it is not in the mountainous area, I personally suggest using Unicom's card. Unicom's agent shop or business hall may not move so much, and it may be inconvenient to change business or charge the phone bill in the future. But to be honest, people who have nothing to do usually change their business every day. As for charging the phone bill, Taobao can. Charging them online is fast and convenient. As for the service, think about it. If anyone dares to complain, he will be honest, hehe.