Affected units were sold primarily between September 2015 and February 2017 and product eligibility is determined by the product serial number.
CAAT recommends that;
1. operators inform crews, passengers and staff about any restrictions
and limitations on carrying such devices on boards.
2. If such a device is taken on board, the passenger is required to keep it
switched off and not use or charge the device.
3. Passengers should also be reminded to inform cabin crew immediately
when a device is damaged, hot, produces smoke, is lost or falls into the seat structure.
Finding your serial number : http://support.apple.com/15-