Excuse me, why is there a delay in sending and receiving text messages on mobile phones?

Please check according to the following steps: (1) Please check whether the phone memory and card memory are full, and empty the phone memory and card memory; (2) Please replace the mobile phone and test whether it is normal. If it is normal, it is a mobile phone problem, and you need to consult after-sales or change the machine; (3) Please contact China Mobile to confirm whether your mobile phone is delayed. If so, you can complain to China Mobile and China Unicom. (4) If the above operations cannot solve the problem, please call 10000 to declare. For more service offers, click on "official website" Customer Service 2 18 below to answer your questions.