sentence: this network reaches 98.5 % of people in australia and operates on the following frequencies : 2g ( 900 mhz ) 3g single band ( 2100 mhz ) 3g dual band ( 900 mhz & 2100 mhz ) 4g ( 1800 mhz ) 4g plus ( 2300 mhz ) products virgin mobile sell a number of telecommunications products : postpaid ( i.e. billed monthly ) mobile phone services prepaid mobile phone services postpaid ( i.e. billed monthly ) mobile broadband services prepaid mobile broadband services they offer a range of mobile phones with their plans , including products from apple , samsung , sony , htc , nokia and others .