By Neil Lancefield, PA Transport Correspondent & Lawrence Matheson British Airways has announced that passengers will be able to use messaging apps for free while flying from next month. The airline plans to introduce the service over two weeks starting from April 3, allowing travellers to send and receive texts on apps like WhatsApp, iMessage, Facebook Messenger and Teams. All of British Airways ‘ Gatwick planes and more than 80% of its Heathrow-based fleet are equipped with wifi, and the rest are expected to have it by the end of 2025. To use the free onboard messaging, passengers need to si…