Let's assume that having full control over your phone is a problem. Then the biggest issue lies with power management. A phone will try to power down any subsys

Let's assume that having full control over your phone is a problem. Then the biggest issue lies with power management. A phone will try to power down any subsystem which seems to be underused and that doesn't play well with a server listening on a network socket all the time. So either you will have to disable power management negatively affecting the battery life or accept that most of the time your server won't be able to handle requests.