Most of our holiday cottage business is via Sykes Cottages, but occasions arise when we need to take payment directly from our guests. We generally eschew the use of cash, as there is no automatic paper trail. So we use a card reader obtained from Square.com. This usually works well and connected to our account via our Smartphone. It also ties in with our Xero.com accounting system.
However a couple of weeks ago the Square Reader suddenly became incompatible with our smartphone which is a HuaWei P20 Lite device. The App software and the operating system is fully up to date. It was working one day and not the following day. We contacted Square support after trying all the suggested remedies, we even purchased a replacement card reader for £19, to no avail. Square support have admitted they've had quite a few reports in respect of the Huawei P20 Lite and have gone away to investigate. Meanwhile the Square card reader still works fine via our Samsung smartphone.
The bottom line is that the Smart Card Reader, at present, is no longer compatible with the P20 Lite.