A:AnswerThank you for the inquiry. Our JBL Partybox 1000 does not come with an app to make the Bluetooth undiscoverable. However, once the speaker has been paired to the source, it will not be recognized by any other Bluetooth source.
A:AnswerThe owner's manual of our JBL PartyBox 1000 is available on the "Documents and Download" of our website here: https://www.jbl.com/party-speakers/JBLPARTYBOX1000.html
A:AnswerPlease make sure that the volume on your phone or source device is turned all the way up. Also, please check and pair the speaker with a different device. If you need more help with troubleshooting, please reach out to our Customer Support.