Lena Kowalski is HelloRoam's Europe and Middle East eSIM reviewer. She tests data plans across Deutsche Telekom, Vodafone, Orange, Telefonica, Three, EE, Turkcell, Etisalat, du, STC, and Ooredoo, and writes about cross-border travel inside the EU and GCC. Lena focuses on real coverage, honest pricing, and what actually works for business and leisure trips.
