By Neil Lancefield British Airways passengers will be able to use messaging apps on flights free of charge from next month. This change will kick off over two weeks beginning on 3 April, allowing travellers to use text functions on favourite apps like WhatsApp, iMessage, Facebook Messenger and Teams for no extra cost. With Wi-Fi available on all Gatwick aircraft and more than 80% of those based at Heathrow, the goal is for the entire fleet to be fitted with this service by the end of 2025. To make the most of this free onboard messaging, passengers have to sign up to British Airways’ loyalty s…