Pairs but doesn't connect to Bluetooth speaker

[Davebeattie]

Playing around with my new xperia xz premium today and having some problems connecting to my little Sony Bluetooth speaker. 

It seems to pair but then not connect. Any advice on how to sort it out?

[Uliwooly]

@Davebeattie

Could you test the Bluetooth 

settings > about phone > diagnostics > test > test bluetooth 

also, test a different device with your phone.