Been re-reading the Street magic info on spirits, and the only thing we know for sure, is that we know nothing really about spirits. The only thing a take away from reading between the lines is that spirits seem to possess qualities that the summoner expects them to have on a sub-conscience level. What I mean by that is, if a Shaman is summoning a Spirit of Man, and he
believes he is summoning some ancient ancestor of his, the spirit very well could have all sorts of ancient knowledge or skills (speaks fluent Salish for example). But if a mage
believes spirits are a warping of mana to his will, the spirit he summons will be more like an animation then the Shaman's example.
On page 92 of SM, the write up goes on to state the following:
".... Interaction with technological display devices and simsense such as commlinks and simrigs is even more tenuous. the location of a spirit's visual ability is at the vary least variable; and as there is no nervous system to connect to, the technical diffiulties of making sure an AR setup are far from trivial"
So, this basically tells me that while it is
NOT IMPOSSIBLE for a spirit to be able to use simsense or a commlink, it is
HIGHLY UNLIKELY to be able to. Again, this
may be a restriction of the summoning mage. Since the mage doesn't
believe that the spirit could be able to "understand" a commlink, the spirit can't. In short, the limitations of the mage put limitations on the spirit.
this could explain why some spirits (Buttercup) can appear to use technology and other spirits can't.
So, I guess that leaves us back at square one

And it's upto the GM of individual games to theorize on their own what a spirit can and can not do in their games. For me, I would base my answer on the Mage in question and what he shows me he thinks the spirit is.... Is he using them as mindless lemmings to throw at his enemies? does he hold every spirit he summons with a touch of reverance? Are they tools to make himself stronger? or, are they individuals that he plucks from the ether, crushes their will and bind to his service?
His actions speak louder then words, and his actions reflect his true beliefs, and thus what the spirits can and can not do....