If you unpaired the device then you have to follow the instructions for the device's pairing. It usually involves getting the speaker being in Pairing Mode first. Turning it on/off will only cause it to look for PAIRED devices; since you UNPAIRED from the phone, then there is no valid connection established and the speaker just won't connect. Set the speaker to pairing mode and re-add/re-pair the device to your phone, same as you must have done when originally paired and the same way every single device requires you to do (some might automatically enter pairing mode if no valid connection is made, but that depends on the device you're trying to add to your phone).