Using 5G while roaming

Europe

Country	Operator
Albania	Vodafone
Armenia	Ucom ( orange),Telecom Armenia,Viva (MTS)
Austria	T-Mobile (Magenta Telekom),Telekom A1,Hutchison Drei (Orange)
Belgium	Base Company,Proximus(Belgacom),Orange(Mobistar)
Bulgaria	A1 (Mobiltel),Yettel(Telenor,Globul),Vivacom(BTC)
Croatia	T-Mobile(Croatian Telecom),A1 (VIPnet)
Cyprus	MTN(Areeba,Epic),Cytamobile-Vodafone
Czech Rep.	T-Mobile,Vodafone,Telefonica O2
Denmark	Norlys Mobil (Telia),Hi 3G
Estonia	Elisa,Telia Eesti AS
Faroe Isl.	Kall Telecom
Finland	Elisa,Telia Finland Oyj
France	Orange,Bouygues Telecom,Free Mobile
Germany	Telefonica O2 (E-Plus),Telekom(T-Mobile)
Greece	Vodafone Panafon,Cosmote,WIND(Nova,TIM Hellas)
Hungary	T-Mobile (Magyar Telekom),Yettel(Telenor,Pannon)
Iceland	Nova Iceland,Syn (Vodafone)
Ireland	Vodafone,Meteor
Italy	TIM,Wind,ILIAD Italia
Latvia	Bite,Latvijas Mobilais Telefons SIA (LMT) Telia
Liechtenstein	Telecom A1(Mobilkom)
Lietuva	Omnitel,Bite
Luxembourg	Orange,Tango (Proximus),Post
Malta	Vodafone (Epic)
Moldova	Orange(Voxtel)
Montenegro	MTEL
Netherlands	T-Mobile,KPN
Norway	Telia Norge AS
Poland	Orange,Play Mobile,T-Mobile
Portugal	Vodafone,MEO(TMN)
Romania	Digi,Orange
Russia	Megafon,MTS
Serbia	Yettel (Telenor)
Slovakia	T-Mobile
Slovenia	A1 (SI Mobil),Telemach
Spain	Telefonica Moviles(Movistar)
Sweden	Teliasonera,Hi3G
Switzerland	Swisscom,Sunrise,SALT MOBILE SA ( Orange)
Turkey	Vodafone,Turk Telekom (AVEA)
United Kingdom	Virgin Media (Telefonica O2),Hutchison 3G UK,Vodafone,Everything Everywhere Limited(T-Mobile)

Australia

Country	Operator
Australia	Vodafone,Optus

Asia

Country	Operator
Bahrain	Viva
Hong Kong	HKT(CSL)
Iran	MCI
Israel	Cellcom,Hot Mobile,Pelephone,Orange(PCC)
Japan	Docomo
Kazakhstan	Kazakhtelecom(K'Cell),Tele2 Kazakhstan
Korea(South)	KT Corporation,SK Telecom
Kuwait	Wataniya Telecom (Ooredoo),Viva,STC
Malaysia	Digi Com
Oman	Omantel
Qatar	Qatar Telecom(Ooredoo)
Saudi Arabia	Etihad Etisalat Company(Mobily),Zain
Singapore	Singtel
Thailand	True Move,TriNet,AWN(AIS)
United Arab Emirates	AREDU
Uzbekistan	UMS LLC,Ucell(Coscom),Uzmobile
Vietnam	Viettel

Africa

Country	Operator
Tanzania	Vodacom

America