When you have been arrested on suspicion of a criminal charge, you are not yet convicted of a crime. Simply being arrested does not mean you are guilty, or that you will be sentenced., it means that officers have a reason to believe that you are guilty of the charge you have been arrested for.
Before you can be found guilty of any crime, you must either plead guilty to the charge, or you must be found guilty beyond a reasonable doubt in a court of law. Only then do you have a conviction on your record.
During the criminal court process, from the point you are arrested, or given a citation, through the completion of your case, you have certain rights. These rights may not be taken away from you at any point in the proceedings, and it is the Court’s obligation to inform you of these rights, whether you are represented by an attorney or not.