The United Airlines Boeing 787-9 version present here is configured with the following cabins:
United Polaris Business Class - 48 open suites feature a seat that transforms into a fully lie-flat bed
United Premium Plus - 21 recliner style seats feature additional legroom and wider seats than the ones in Economy Class
Economy Class - 188 standard seats (39 seats are designated as Economy Plus which feature additional legroom and are available for selection for an additional fee with applicable fares).
Inflight entertainment is provided through seat back monitors and onboard streaming to your own device. All seats have access to AC power sockets and USB-A power ports.