We wouldn't recommend a 4K screen anysmaller than 27 inches as you aren't going to see the real benefit of thoseextra pixels in what is a relatively small space by that resolution.
Kuma talin lahayn shaashadda 4K wax ka yar 27 inji maadaama aadan arki doonin faa iidada dhabta ah ee pixels-yadaas dheeraadka ah ee ah meel aad u yar qaraarkaas.