OK first time chiming in here.
I've gone thru 2018 in chronological order in the Stones YT page. Appears to me from skimming every episode he appeared on in 2018, that he first starts super using on the August 22nd 2018 ($5/$5 No Limit Hold'em with Brent and Scott) episode.
All of the previous 12 episodes (appears his first 2018 appearance is Feb 21) that he is in before the Aug 22 2018 episode, I didn't see any super-using evidence, the phone (and keys) are often out on full display during hands/action, hands seem played reasonably, he's actually decent. Does run well often, but nothing overtly suspicious.
Then on the August 22nd 2018 episode, I see definite weirdness, a very weird play where he goes nuts with T2s, very obviously looks down in his lap before making a questionable/suspicious play, phone is nowhere to be seen, etc.
Here are the twelve links to the 12 appearance in 2018 that looked fine to me, then the link to where I think is the first stream that he super uses (August 22nd 2018 ($5/$5 No Limit Hold'em with Brent and Scott):
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** 12 appearances in 2018 that seem fine / normal / non-superusing (TBF I skimmed thru hands pretty quickly looking for absence of phone on table, obvious crotch glances, or suspicious hand situations/plays, so it's possible I missed something before August 22nd episode)**
Feb 21, 2018 Veronica & Friends! $1/$3 NLHE with Special Guest Jonathan Little:
https://www.youtube.com/watch?v=mBdP260MCuQ
Apr 19, 2018 $5/$5 No Limit Holdem with Special Guest Andrew Neeme and Brent Harrington:
https://www.youtube.com/watch?v=J7HTpCRJplE
May 23, 2018 $5/$5 No Limit Holdem with Justin Kelly and Chris Glasgow:
https://www.youtube.com/watch?v=vVv8BATZmqI
Jun 22, 2018 $5/$5/$10 No Limit Hold'ed with Special Guest Chris Moneymaker, Hosted by Kasey and Justin:
https://www.youtube.com/watch?v=1RTNjRxcvIc
Jul 18, 2018 Veronica & Friends! $1/$3 No Limit Hold'em with Justin Kelly and Kasey Mills:
https://www.youtube.com/watch?v=qAw9HiSpG9w
Jul 27, 2018 Veronica & Friends Replay w/ Live commentary, with Tom and Scott:
https://www.youtube.com/watch?v=HvE09nhHLJk
Jul 30, 2018 $1 on the Button / $2 / $3 No Limit Hold'em with Scott and Kasey:
https://www.youtube.com/watch?v=WaWPHGvuqDg
Aug 1, 2018 $5/$5 No Limit Hold'em with Brent and Scott:
https://www.youtube.com/watch?v=_eYbMfvswe4
Aug 3, 2018 $5/$5/$10 No Limit Hold'em with Train and Kasey:
https://www.youtube.com/watch?v=hu4n0Sis8Fg
Aug 6, 2018 $1/$3 No Limit Hold'em with Train and Brent:
https://youtu.be/ZKa83uP7m_Q?t=2352 (actually gets pwned pretty hard by Joel in this one)
Aug 10, 2018 Harlan and Victims - $5/$5/$10 No Limit Hod'em with JFK and the Mountain:
https://www.youtube.com/watch?v=1vlmz8T86DQ
Aug 15, 2018 Veronica & Friends - $1/$3 No Limit Hold’em:
https://www.youtube.com/watch?v=P4KS_TixXx0
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and..... here's the Aug 22 2018 episode where things start to get weird, phone out of sight etc, and first time I see the quick crotch-gazes disguised as looking at cards, immediately preceding a pretty suicidal (cold 3-bet jam on flop) play with bottom pair against two opponents that you can only make if you are certain they both have broadway hands that whiffed on the 8 high flop..., especially considering the 2-bettor was fairly committed with the 2 bet sizing and his fairly shallow stack depth (meaning you can only jam on him if you are certain it's a bluff/opponent has nothing, but it's still crazy because of the stack to pot ratio, and the fact that Mike has yet to commit any post-flop bets before his suicide play). Anyway so here you go:
Aug 22, 2018 $5/$5 No Limit Hold'em with Brent and Scott:
https://youtu.be/oOxc4qbQiLo?t=2287