Spotty

Dalmatians are regarded as being highly spotty dogs.

Service was spotty in the area.

We're no longer interested in doing business with you. The quality of your product has been... spotty, to say the least.

The wifi connection was spotty at times and the parking was limited.

Cell coverage is pretty spotty where I live.

Mobile phone reception in this area tends to be rather spotty.

Many of the buyers had a spotty credit history.

I went fishing today and all I caught were spotties.