At a difficult quarterly results call, BT CEO Gavin Patterson tried to distract from stagnant sales and hefty job cuts with talk of investment in 5G and fiber. He said the telco would have a commercial 5G product by the end of 2019, though the company is not thinking of anything too radical. On the call, CTO Howard Watson said: “We’re confident the first application will be enhanced mobile broadband. We’ve built the business case for 5G leadership on returns from that opportunity.” BT picked up 40 MHz of spectrum in the 3.4 GHz band for £303m ($411m) during the auction that finished in April. Patterson said the firm would invest £3.7bn ($5bn) in capex in the current fiscal year,…