Thai Airways International and its budget subsidiary Thai Smile Airways have joined other carriers in banning the Samsung Galaxy Note 7 from checked baggage and being used onboard.
Pratana Patanasiri, THAI vice-president of aviation safety, said the ban was due to global recalls and sale suspensions of the Note 7 device after a number of batteries exploded. A similar explanation was also posted on the Thai Smile Airways website.
Mr Pratana advised passengers that in general, they should always tell flight attendants if their electronic devices break, become abnormally hot or are lost during flights.
He said the action falls in line with the safety directives of THAI and the European Aviation Safety Agency.
The growing list of other airlines that have imposed the same ban includes Singapore Airlines, Qantas, Etihad and Virgin Australia.
"The powering up and charging of Samsung Galaxy Note 7 mobile phones is prohibited on all our flights," SIA said in a statement yesterday.
The Associated Press reported yesterday that Samsung also told customers in its home country of South Korea to stop using Note 7 phones. It said they could obtain rental handsets for temporary use.
The US Consumer Product Safety Commission on Friday urged any owner of a Samsung Galaxy Note 7 to stop using the large-screen "phablet" smartphone until the safety issue is dealt with.
The warning by the independent government agency came a day after the US Federal Aviation Administration and Japanese aviation authorities told passengers there was a risk that turning on or charging a Note 7 device on an aircraft might lead to its batteries exploding.
The FAA also advised passengers not to stow Galaxy Note 7 devices in checked baggage to avoid the risk of fires in the cargo holds of the aircraft.