The following are our recommended frequency band operators:

America: Suggest T-Mobile
Australia: Optus / Telstra /Virgin Mobile/ Vodafone
Germany: E-Plus/ O2 / T-Mobile/Vodafone

France: Bouygues Télécom/ Free /Orange /SFR

Spain: Movistar/Orange/Vodafone / Yoigo

Italy: 3 (Tre) /Telecom Italia Mobile (TIM) /Vodafone /Wind

UK: 3 (Three) /EE (Everything Everywhere) /O2 /Virgin Mobile /Vodafone

Vodafone users and other operators not on the list need to check: