My Nokia phone and mobile card often take an hour or a long time to receive text messages. Why?

Mobile phone communication operators' networks will be delayed. This usually occurs during peak text messaging periods or when the signal is poor. When transmitting information, the mobile company needs to receive confirmation from the other party whether the text message has been received. If your mobile phone signal is not good at the time, the system will save your text message and then send it again until it receives confirmation that you have received the message. If it is peak information period, the channel will be congested and SMS delays will occur.

Generally speaking, it is mainly a problem of the operator's network, but it is also related to the mobile phone, such as the poor mobile phone signal itself, etc.