Sharing a different angle on your question. My party of 4 (2 adults, 2 recent high school grads) took the KTTK tour in August 2022 and our (rude, mean, and arrogant) Tour Guide was The Supreme Enforcer of the No Phone Policy. The anti-phone policy on the tour was nearly abusive. You are not allowed to take pictures of anything backstage. Which I was prepared for - very fair, especially for the backside of Pirates or the Utilidors.
However, "backstage" is defined as: every single thing you encounter during the tour while with your tour guide. So, special windows being pointed out on Main Street at 8:15am while non-tour guests were also on Main Street with you? That was considered backstage and we were not allowed to take photos. Worse: trying to stack Genie + reservations? Also not allowed, especially if you were truly in a backstage location.
Given today's reliance on Smart Phones in order to tour Disney, we were appalled by the constant scolding by our Tour Guide. Not just my family or me, but nearly every family had a teen who wanted to connect with the world or an adult who wanted to get their money's worth out of Genie +. We did not have to deal with a 1:00pm VQ attempt, but there is no way our sassy Tour Guide would have allowed it. Especially as that is very likely to be when you are in the grand finale portion of the tour, the Utilidors.
In summary: I would not rely on being allowed to use your phone during KTTK. Perhaps Disney has relaxed their anti-phone policy for this tour, and goodness knows I registered my concern with how they pretty much forced me to pay for Genie + then disallowed me to use the services during a 4-hour tour when I could have booked 2 more attractions; but if they haven't, I would pretty much guarantee you that you will not be scoring a VQ while on tour, as those tour guides appear to gain Disney bonus points for admonishing guests to put their phones away.
As one more aside: I have done over 10 different tours at WDW and loved all of them except KTTK. The only aspect that added any element of surprise was the Utilidor. And while that satisfied a long-awaited bucket-list item for my family, there was not one single other moment that was a surprise or a new insight, and the Tour Guide made it miserable. Perhaps 10 years ago before every mystery of Disney had its own website or television streaming special, this tour was filled with Magic, but now it's just a group of Disney fans nodding when they hear an anecdote they already knew and beating the Tour Guide to the punchline about a Disney secret, while waiting for a chance to finally, finally see the Utilidors.
YMMV and perhaps you'll love it. We felt overcharged for an opportunity to hear a compilation of facts we already knew, while banned from using our phone to continue making plans for later in the day.