Fully functional with your cellphone via bluetooth. So, hide the pump, and do everything (bolus, temp. basal, settings, etc.) on the cellphone. Cool. Does Tslim and minimed have the same features?
No, current Tandem and Medtronic pumps do not accept remote commands to administer insulin. Several years ago the Medtronic pumps did, back in the time of the x15 and x22 and early x23 pumps.
If not, why?
There was a paper in one of the hacker conferences that showed how a rogue third-party radio could send commands over the unsecured radio link and administer insulin. There was speculation that a pump user could even be subject to attempted assassination by insulin overdose. Medtronic removed the remote dosing commands from their pump firmware to avoid any related safety and liability issues. The Sooil pump takes remote commands over bluetooth from a paired phone; this kind of radio link is considered sufficiently secure.
Open-source closed-loop systems such as LOOP, openAPS, and androidAPS use the old Medtronic pumps because their radio command interface is well-understood. There is ongoing work to enable use of the Omnipod radio link, but this radio link is not yet fully reverse-engineered. The Dana RS pump from Sooil was developed in cooperation with some folks from the androidAPS project, so that one can be used to dose insulin from the phone.