Not unless you want to have your smartphone permanently confiscated by the judge and possibly be held in contempt of court. Pay for a transcript from the court reporter.
The information provided in this answer does not create an attorney-client relationship and is not considered to be legal advice.
Most courtrooms have electronic recording and you can order the audio and/or video, depending on the recording, with the court for approximately $20. If you try recording a proceeding without court approval, you are going to be subjected to a possible contempt ruling.
We donut have court reporters in Maricopa county for family court unless you request them ahead of time and the transcripts are expensive. For twenty dollars the court will give you the video and audio recording the minute entry contains information on who to call to order it.