How did the sound of Apple 1 1 become smaller and how to solve it?

Take Apple 1 1 mobile phone and IOS 13 system as examples:

1, Apple phones are getting smaller and smaller. Maybe the volume of the mobile phone is too low. You can turn up the volume in the phone settings and try to increase the volume of the phone.

2. The sound of Apple's mobile phone has become smaller, which may be due to the long-term use of the mobile phone, which caused the protective net of the receiver to be sealed by dust, resulting in abnormal sound. If the receiver has dirt and dust, you can blow the dust with a leather tiger or wipe it with a cotton swab.

3. Apple's mobile phone is getting louder and louder, which may be an abnormal situation caused by the conflict of mobile phone software. If it is determined that it is caused by software, you can uninstall the recently installed software and restart the phone.

When making a phone call, turn up the volume button outside the phone. If the sound is still low, there may be something wrong with the receiver of Apple's mobile phone. If the speaker is turned on by itself when the mobile phone plays a song, the sound is very low, and the external speaker may be out of order. If others can't hear their own voice on the phone, it may be that the microphone of the mobile phone is damaged. There is something wrong with the sound of Apple's mobile phone. Need to check what is wrong, and then deal with it, or ask professional maintenance personnel to check and repair.