The airline said there was no fire but sparks and smoke were coming from the phone.
It said in a statement that the crew used a fire extinguisher and placed the Samsung Note 2 in a container filled with water in a lavatory.
A Samsung spokesman could not immediately be reached for comment.
Samsung has recalled 2.5 million newer Note 7 phones after dozens of reports of battery fires. Authorities in several countries have banned their use in aircraft.
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