To what court or arbitrator are you appealing? You do not tell us.
It may make no difference, however. The policy against phone calls while driving is reasonable. See the many studies which show that using cell phones impair drivers more than alcohol.
An "emergency" call? If it were an...
In recent years, the courts (including the US Supreme Court) have been more permissive regarding searches of persons in vehicles, including passengers and including vehicles not involved in traffic offenses.
Was your friend charged? Sounds like it. Your friend needs to get an attorney ASAP.
You should expect a fine of well over $200. In addition, you may have to pay court costs of another $150 or more. All of this would depend on which state you are in. There may be other penalties.
You can call the clerk of the court to ask the standard fine for 36mph over the limit.
You...