How to Hook Up a Phone to a Speaker

You can connect a cell phone to a speaker to conduct hands-free conversations. You can also enjoy music stored on your phone by listening to it over external speakers. Connecting a phone to a speaker is easy and does not require much technical know-how.

Stereo wire
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Step

Determine the type of headphone jack on your phone by checking the phone manual. Most phones come with the 2.5 mm phone jack but some come with the 3.5 mm headphone jack.

Step

Buy an audio adapter based on the type of headphone jack on your phone. One end of the adapter should have a 3.5 mm jack.

Step

Plug the phone end of the adapter cable into the headphone jack of the phone. This jack can be identified by the tiny headphone symbol next to it.

Step

Plug the 3.5 mm jack into the speaker. Make sure both the speaker and phone are switched off when performing this step.

Step

Switch on the phone and the speaker. Test the connection by playing some music at low volume and then slowly increasing the volume of the speaker as needed.