An aftermarket Bluetooth setup is likely your best (only?) option.
See this discussion;
Hi First Post since joining great to be here A quick question I traded my 2010 500 in for a 2016 The 2010 one had Bluetooth, connect phone etc My 2016 has no phone option on stearing wheel and can't seem to connect phone Does every fiat 500 have Bluetooth for phone connecting Cheers
www.fiatforum.com
As far as I know all 500's sold in
this country had BT standard, seems to have been a cost-cutting measure in basic models over there.