What if Apple's mobile phone can't send voice?

You need to check the settings and restart your phone first.

If the Apple phone can't make voice, you can try to check the settings of the phone. Make sure that mute mode is not turned on, the volume adjuster is set correctly, and the voice function is not disabled. You can also go to the sound settings in the settings menu to confirm whether the settings of ringtones and prompts are normal. If everything is set correctly, but the problem still exists, you can try to restart your phone. Press and hold the power button, slide the power-off option, and then press the power button again to turn it on. This can sometimes solve temporary software problems. If the problem persists, other factors need to be considered, such as hardware failure or software update. In this case, it is recommended to contact Apple's customer support or go to Apple's authorized repair center for professional help.