Why is Xiaomi's mobile phone sending text messages so slow? After a while, it said it had been delivered. I sent a text message to someone once. I sent it in the afternoon and received it on 12 in the

Why is Xiaomi's mobile phone sending text messages so slow? After a while, it said it had been delivered. I sent a text message to someone once. I sent it in the afternoon and received it on 12 in the afternoon. There are many reasons for this. There are generally the following situations that cause the delay of information transmission: first, the signal of your mobile phone is not good, or the signal of your place is not good, and second, the signal of the receiver's mobile phone is not good or the signal of the area is not good. You can test it in a place with good signal.