The influencer, 34, filmed her boyfriend Daniel Parisi using a sick bag to hold up his phone during the flight, so he could watch a sports match hands-free.
“Taught Daniel the sick bag trick…he was v. Impressed,” the star wrote.
The hack has gone viral on TikTok, with Katarina Mogus’ video racking up over 500,000 views.
Demonstrating the nifty trick, Katarina first places the sick bag in between her iPhone and the case, making sure it’s securely clipped in.
She then lifts the contraption and sticks the free part of the sick bag behind her tray table, using the lock to hold it in place.
You can then watch anything you like on your phone, with people labelling the idea as ‘useful’ and ‘genius’.
Some TikTokers also shared other phone hacks, saying that you could do the same thing with a disposable mask in your car.
Other users were more sceptical and didn’t think the hack was worth trying.
“Why can’t you just place it on the little table?” one asked.
“It can ruin the back of your phone, and you [could] just hold it,” a second added.
“Just use the goddamn TV,” another chimed in.
Tully and her boyfriend have been together for over a year, and the star shared with her followers that this is the first time they’ve ever travelled internationally together.
The podcaster poked fun at how excited her boyfriend was in a series of videos.
“So, Daniel and I have been together for well over a year now, and yet this is our first international holiday together. In fact, it’s my first time international since Covid. How are you feeling about it Daniel?” she started.
The star then revealed Daniel was ignoring her and fully engrossed in watching sports on his phone.
Captioning the next clip with “I swear he actually loves me,” Tully then tried to get her boyfriend to express excitement.
Never miss a thing. Sign up to Yahoo Lifestyle’s daily newsletter.
Or if you have a story idea, email us at firstname.lastname@example.org.