Slovak mobile operator Swan Mobile, trading under the brand 4ka, has begun offering international roaming on an LTE network, reports Zive.sk.
The first country in which 4ka offers roaming on LTE, besides the 3G roaming available so far, is Austria. 4ka's customers will be able to roam on the LTE networks of A1 and Hutchison Drei Austria. In 2019, 4ka plans to provide 4G roaming in more EU countries.
Source: https://www.telecompaper.com/news/4ka-offers-lte-roaming-in-austria--1273055