In general - you will be charged 3 EUR/ 3.5 USD/ 2.7 GBP monthly fee (paid for the full year in advance, as a 36 EUR/ 42 USD/ 32.5 GBP annual fee). You will receive two notifications before the end of the free GSM service period (which is 2 months). When GSM service expires - you will be able to renew your account from Monimoto app settings.