In his E3 2019 coverage he was pissed that no mobile games were coming out for franchises he was interested in. He was also pissed off that many of the mobile games announced didn't have announced release dates, this upset him because 'how can you get hype for a game without a release date?‽' He then specifically mentions what mobile game he is hype for: 'Elder Scrolls: Blades' for the
Switch.
Phil also says he played this Final Fantasy mobile game for like a year and a half, he talks about having to 'drop tons of money' while playing it.
He also explains that he liked the Marvel mobile game he plays better because you could earn stuff in game just by playing, so even if he wasn't sinking thousands into the Marvel game he still must have been putting insane amounts of hours into it to earn that shit. Phil is likely playing mobile games all the fucking time off-stream. He probably has shit running for them during his stream as well. 'Oh, I got an e-mail, that's what I was checking,' sure Phil. . .you're checking an e-mail notification, you're totally not doing upkeep on your mobile game addictions

He talked about mobile games a fair bit during E3 2019.