Urgent, the short message time of lumia920 is a big problem. I'm going crazy ~

Thank you for choosing Nokia Lumia920T mobile phone!

You can try sending text messages to other mobile phones or your own mobile phone first to see if there is a 6-hour delay. If it is only received by one or two friends' mobile phones, it does not rule out that it is related to the mobile phone system. If there is a delay, please try to change a SIM card.