No this is a stand alone device, it does not require any other devices to work. It comes with a mini memory card that you can remove and put into a computer to add pictures to charts. That is the only way to get info off unless you snap a picture of the picture with your iphone which honestly is probably faster 

Yes, which is easy to use 

Could you please update us your full Minolta lens model ?as Minolta has MD MC and AF mount, K&F Concept MD-M4/3 is suitable for: Lens: Minolta MD MC Mount lens(not for Minolta AF mount: KF06.157) Camera: Micro 4/3 (MFT) mount mirrorless camera like Olympus PEN, OM-D series, Panasonic Lumix DMC-G1, G2, G3, G10, GX1, GH1, GH2, GF1, GF2, GF3, GF5, GH4, Panasonic AG-AF100 Mirrorless Digital Cameras, Black Magic Pocket Cinema Camera (BMPCC) 

No, it's just the filter with case. But any brand of 100mm square filter holder kit will work (Lee, Kase, Nisi, Tiffen, etc) which accept 2mm thick glass filters. I have Kase one. 

The part for that use is extendable so can fit most phones but this part of the monocular is absolute rubbish. It scratches the phone and just doesn't work for that purpose at all. The actual monocular is very good though if you want to use it normally.