By Charlie Conchie The ‘work phone’ could be set for a revival in the City this year as top firms snap up tens of thousands of mobiles to stamp out wayward Whatsapp use by staff, a compliance boss has predicted. Regulators on both sides of the Atlantic have been on the offensive against the misuse of private messaging apps in recent years, with both the Financial Conduct Authority and Securities and Exchange Commission warning firms and dishing out fines to companies. The SEC fined 16 banks a total of $1.8bn at the end of 2022 – including Barclays, Citigroup, Goldman Sachs and Morgan Stanley –…