>How do you use your I phone as a decoder? because in the radio user it says you can
Being polite, I would be be a little wary of the claims that Mr Robertson makes in his monthly musings in Radio User. My experience is that he has, how shall we say, been a little economical with the truth on a number of matters.
For your specific question, I don't know how this is done: my understanding is that you need more functions that are in a full fat OS such as Win 8 than Win Phone 8 to run DSD+/Soundcard etc, plus perhaps needing a little more grunt than your average mobile will offer. Of course, I look forward to Mr Robertson being able to substantiate this latest claim with evidence.
>Can you pick up hytera dmr transmissions On a motorolla dp 3600
If they are using conventional DMR mode, and of course you have programmed the DP3600 correctly, then yes. The reverse is true also. They are interoperable, and I have seen several operators do this.