KPN’s 4G network was hit by a failure on Friday. This is apparent from complaints on Twitter and AlleStoringen.nl. According to affected KPN subscribers, they were suddenly switched from the 4G connection to a much slower 3G connection. It was a malfunction in the Middle East and North East Netherlands, reports KPN customer service on his twitter account. “Think parts of Gelderland, Overijssel, Groningen, Drenthe and Friesland,” says a spokesperson for NU.nl. The problems were solved around 2 p.m. The cause of the failure is not yet known.