I am iphone4s. Today, someone sent me a text message on my mobile phone eight hours faster, for example, at six in the morning.

First of all, please confirm whether the time of your mobile phone itself is accurate, and also confirm whether the message you sent was received by others on time during the time when you sent the message. If it is not received on time, it should be the operator's problem. If it is received on time, it is necessary to adjust the time. Open the settings, click General, and find a general time zone to set. I hope it will help you.