For doing that, check the connection settings on your iphone. Press the home button if your iphone has one; 9 Tips To Iphone Sound Not Working Without Headphones Just go into the settings of the device and click on the option bluetooth. Can't talk on iphone without headphones . With your headphones in or speakerphone activated, you can talk on a call without holding your iphone to your ear. Turn off bluetooth to solve iphone cant hear caller. On ipad or ipod touch, make a facetime call. Rapidly insert/remove your headphones a half dozen or so times. Many users have reported this problem. If you have one of the following problems: You unplug your headphones, but when you adjust volume on your ios device, you still see a headphones volume indicator. If you hear sound, try making a call with your iphone and turn on speakerphone. When you contact your network provider, make sure: The problem of the iphone can't hear calls is actually quite common, wh...