MikroTik RouterOS network falls off on iPhone, what to set up?

Question

iPhone

Good afternoon,
router: RB951Ui-2HnD
firmware: WebFig v6.23 An
excellent device, but here's one problem, when the display turns off on iphone X, wi-fi turns off. Please help with the settings, apparently the router itself disconnects the smartphone from itself.

Answer 1

Mikrotik + iOS - how to set up a firewall for the phone to work in sleep mode?
It's not a Mikrotik problem, it's an iPhone problem. You here https://support.apple.com/ru-ru