How to view iphone newsletter?

Flash message refers to the short message that can be automatically displayed on the receiver's mobile phone without any operation, also known as direct display short message or hands-free short message, which is the function of the mobile phone and has nothing to do with the operator itself.

The official explanation is that the information sent to users can be directly displayed on their mobile phone screens (that is, direct SMS), and the information will not be automatically saved after reading (this service is only applicable to users of China Mobile and China Unicom). Flash messages have different forms on different mobile phones, and individual models of mobile phones may not support flash messages.