Hitman Sniper....

Hitman Sniper is free (for a limited time?). There is a free version on the android store, at least the icon is re-branded as free; the price is listed as 0.99 so maybe it will be marked back up. Either way free is free for now. I'm not sure of the specs needed for it but I'll give it a go on my phone when I can  get to download it...

http://ie.ign.com/articles/2018/03/28/hitman-sniper-is-free-to-play-for-limited-time-after-hitting-10-million-player-mark