Yes, mobile apps are always connected to the internal server.

While this is good for the end-user, as it provides him a NUMBER of conveniences, it is also disadvantageous, since an experienced hacker can easily get access to this internal server, once he succeeds in jailbreaking it. Hence, while MANUFACTURERS need to look into the hardware part of mobile security, that is, the security FEATURES provided in the handset itself; developers need to FIGURE out how and to what extent they WANT their mobile app to interact with the internal server.

Yes, mobile apps are always connected to the internal server.

While this is good for the end-user, as it provides him a number of conveniences, it is also disadvantageous, since an experienced hacker can easily get access to this internal server, once he succeeds in jailbreaking it. Hence, while manufacturers need to look into the hardware part of mobile security, that is, the security features provided in the handset itself; developers need to figure out how and to what extent they want their mobile app to interact with the internal server.