WiFi dropping out on Xiaomi Smartphone

[SalfordReds63]

I have recently got sky fibre at 500mbps which works fine on every device except for one which is a Xiaomi smartphone. My previous broadband was virgin and I never had any issues with this device on virgin. I have tried resetting the network settings on the device and readding the broadband along with rebooting the device however nothing seems to have worked as the smartphone drops off the WiFi and reconnects intermittently. Is there a specific issue for Xiaomi devices with Sky?

[Peter200]

I also have the same issue with my Samsung phone

Tried all the suggested options from sky and it still does it