Eventually. And, when he is, he will inform you. It would be best if you are aware of it to beat him to the punch and try to figure out how to reconcile it.
If it is the probation officer's warrant then yes, but they probably will not. If it is the judge's warrant the probation officer cannot.
No. It is your probation officer's responsibilty to have you taken into custody on the warrant when you report. If your officer told you you have a warrant, then you may not report.
Violation Of Probation
Possibly. Your probation officer has all the power. If they feel you are a danger to the community they CAN violate your probation and if you fail to come in voluntarly, a warrant will be issued.
In many states, probation officers are sworn law enforcement officers so, yes, they can arrest you on a properly issued warrant.
Yes Yes
A police officer can request that anyone show him or her their phone. In the absense of a warrant, they generally are not obligated to comply with this request, but if they do, he or she may certainly look at it.
Nothing - Unless you are operating in violation of DMV restrictions (suspended or revoked) or are actively wanted on an open warrant) your probation status will be unknown to the officer.
Most likely since someone skipped.
Administrative probation is sometimes referred to as "Court supervised" probation. Administrative Probation means you will not have to report monthly in person to a probation officer. However, you are still on probation. You still must complete all required terms and conditions of your probation or you face a warrant for your arrest for Violation of Probation.
A probation warrant is issued when a person violates the terms of their probation. The warrant is issued by the court and the person must appear to explain their actions to the judge.
Better check with your parole officer. You may have to serve out the rest of your sentance.