The details are as follows:
1. Settings-General-Auxiliary Functions-Call Use in Physical Activities (default).
2. Connect the headset of the iphone, turn on the ipod to listen to music, then press Pause, press home button to return, turn off the iphone (without using other third-party software), unplug the headset, and then turn it on, which can be solved. If it doesn't work after several unsuccessful attempts, press and hold power home for hard restart, and then unplug the headset when a white apple appears.
3. We can simulate the action of listening to music, but this time, don't unplug the earphone too quickly, but gently rotate it. Sometimes it is unplugged too quickly, and the program of the mobile phone doesn't respond. So always keep the headset mode.
4. when the phone is turned off, we unplug the earphone, find a needle, and gently poke it into the earphone hole twice. It may be that when the earphone is unplugged, the bouncing device inside does not return to its original position. After poking, we wrap the toilet paper with the needle, wipe the inner wall of the earphone hole and wipe off the dust covered on it.
5. If none of the above methods works, we can try to restore the factory settings, but in this step, you should back up the data on your mobile phone.
6. if it's not enough, the hardware problem should be sent for repair.
Others
1. Unplug the earphone from the mobile phone, and it will generally return to the standard mode, so you can set the required mode;
2. There is a key in front of the two buttons of mobile phone volume, so push it up;
3. Turn it off before turning it on;
4. Scenario mode setting;
5. There is something wrong with the metal shrapnel in the headphone jack. I always feel that the headphone is inserted. You can try to plug and unplug the headphone continuously to see if you can separate the metal shrapnel inside.
6. Turn off the mobile phone, turn it into a stick with a paper roll and turn it several times in the earphone hole before turning it on;
7. Turn off the phone completely after listening with headphones, pull out the headphones and restart;
8. press settings and select "restore all settings".
iOS is a mobile operating system developed by apple. Apple first announced this system at the Macworld conference on January 9, 27. It was originally designed for iPhone, and later it was applied to products such as iPod touch, iPad and Apple TV. IOS, like apple's Mac OS X operating system, belongs to a Unix-like commercial operating system. Originally, this system was called iPhone OS. Because iPad, iPhone and iPod touch all use iPhone OS, it was announced at the WWDC conference in 21 that it was renamed as iOS(iOS is a registered trademark of Cisco's network equipment operating system in the United States, and Apple's renaming has been authorized by Cisco).