I have no idea how this would control on a phone, but it feels pretty damn good on desktop. The biggest issue is that it's a little dull. The enemies are all basically the same - even though some are melee and some are ranged, you deal with all of them the same way in that you can't do much other than run up to them and kill them before they get a chance to attack. The shotgun and SMG allow you to do this faster and at longer range, making them unilaterally better than the club (breaking bricks with the club is mostly useless.)
Despite adding in new content as the waves progress, the fact that all of them are dealt with the same way makes it feel very redundant. This game could have been much better with the inclusion of enemies that had slower but more powerful attacks, allowing the player to actively dodge and punish enemies. Perhaps some kind of rushing attack with a cooldown, or bosses with multiple phases. Any or all of these things would have forced the player to approach enemies with some kind of specific strategy.
The graphics look nice and it's cool that you got custom music also (the menu theme is a slapper.)