On the phone she discovered some content that indicated that he was allegedly cheating on her.
Flight attendants tried to intervene but were unable to calm her down, leaving the pilots with no option but to make an unscheduled stop in the southern Indian city of Chennai on Sunday.
The Iranian couple was on their way from Doha to Bali in Indonesia for a holiday.
The trio later boarded another flight to Kuala Lumpur and returned to Doha - unsurprisingly, the family didn't continue their trip to Bali.
A woman's wrath can bring down an entire plane, or at least make it land before it reaches its destination.
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The unidentified Iranian woman reportedly used her husband's fingerprint to unlock his phone while he was asleep, before becoming incensed by what she found on the device.
The woman was already inebriated by then and got into a fight with her husband. "They were offloaded, which had no stopover as the woman created a ruckus and misbehaved with crew members inflight", said a security officer in Chennai.
A Central Industrial Security Force official in India confirmed the incident, saying, "On November 5, at about 10am [local time (4.30am United Kingdom time)], Qatar Airways flight QR-962 [from Doha to Bali] was diverted to Chennai. No police action was taken", the CISF officer added. "Later, they were put on a flight to Kuala Lumpur and taken to Doha by a connecting flight from there".
Qatar Airways kept in classy, writing in a statement: "In respect of passenger privacy we do not comment on individual cases".