You can try restarting your phone if an audio driver is playing up. How to tell if a headphone jack is broken? Usually, you will be able to tell if a headphone jack is broken because your audio ...

See: Headphone Jack (3.5mm) 2.5mm connectors are still common for TTY devices for the hearing impaired. Therefore most modern phones require a 3.5mm-to-2.5mm adaptor in order to connect to a TTY ...