After the two years, if you would like to continue using the the built-in data for your mobile data connections, you will need to renew your data plan. We plan to offer the renewals at $50 per year. The detailed procedure for how this renewal will be carried out is yet to be decided, but we will update the information on our website.
Or you are free to install a SIM card of your own (note that only the SIM card sold by us is supported). Or you can connect to WiFi or a personal hotspot.