Why did Apple delay receiving QQ messages? It's all because someone else's news has been sent for a few minutes. I have a hint here.

Sometimes the reception delay is caused by the problem of packet data, and the solution is as follows:

1. First, open the Apple phone and click Settings, as shown in the figure below.

2. Then, in the settings page that opens, click General, as shown in the figure below.

3. Then on the open regular page, click the background APP refresh button, as shown in the figure below.

4. Click the background application refresh to enter the background application refresh page, as shown in the figure below.

5. Then turn on WLAN and cellular network, and turn on the switch at the back of the program, and it is finished.