Apple have just released software update 12.1.4 for iPhones and iPads. Please ensure you check your devices and install the update as soon as possible. This update resolves the Group FaceTime security flaw which you may have heard about in the press. (Read about it on the BBC website here > )
You can find the update by going into the setting app on your iPhone and/or iPad. Make sure you back up your device prior to installing the update.