There have been a few threads about it. There are always hundreds if not thousands of people going for it every month.
and to answer your other question - I believe you need to be under 3 hours now. phones are too fast and people are doing their research on how to optimize their phone for best results. I did my run with an iphone 8. my team was a 5/65 s200 corvus - full suicides, full boosts, with the proper synergy team that boosted attack...