IOB on the pump I've not checked as my boluses tend to be small and well spaced out so I don't normally have any expectation of anything lingering, BG wizard no, that's what the meter is for. I have seen on one or two occaisions where I've miscounted a meal and corretced, that the handset calcs included a reduction for IOB.
WHat you can do is set TBRs, set and deliver boluses including multi-wave, part delayed etc. Stop/start pump, do all the priming etc associated with cannula and reservoir changes
You can also review history such as boluses delivered, TDDs, TBRs used, battery and reservoir status.
I'd say that if you start with the pump, all the pump functions are accessible from the handset, with the added functions of the BG testing and bolus wizard