Bring back text messages

The first poor 998 can't afford it, and this probability is relatively small.

Second, the other person thinks you are hinting at him, and he may not know how to answer you, because he doesn't want to be together, so he suddenly fell into meditation.

Third, the other party thinks you are joking and won't answer you at all.

The fourth network signal is not good, and it can't be received at all.

In fact, it is possible. Let's analyze the specific problems.