Standard of international long-distance call charges from Unicom mobile phone to Britain

There are two preferential networks to choose from when roaming in the UK: 1, O2, EEL(T-Mobile, Orange), Vodafone roaming place: 1.86 yuan/minute, call Chinese mainland (excluding Taiwan, Hong Kong and Macao): 1.86 yuan/minute, and answer roaming place:1minute. Choose discount H3G to call roaming place: 1.86 yuan/min to call Chinese mainland (excluding Taiwan, Hong Kong and Macao): 3.86 yuan/min to answer roaming place: 1.86 yuan/min to call Taiwan, Hong Kong and Macao and other countries and regions: 5.86 yuan/min to send SMS to Chinese mainland (excluding Taiwan, Hong Kong and Macao): 0.86 yuan/min.