no haha, there is no way you can be tracked through your cell phone having these types of things, for all they know you couldve just lived in a state where it was illegal and then moved to say canada, colorado or california and still have your same number. all phones have the option to turn GPS off as well, so you could simply do that just be double safe, the only way they would ever want to look into this is if you really are not being careful and just putting this every where on any site with all your information included. its very hard to even track people through ISP due to the amount of people who own computers these days.
the police will never look into matters that are petty, like i said unless you are constantly asking for it, then they will have a reason to. even if you get arrested they will 9/10 not even bother looking into every thing on your phone, as they have probably hundreds sitting in a basket already from the people who are already in jail, now if you get caught for something related to cannabis they can and have every right to look into anything they feel if the case is big enough. hope this helped make you feel safer. peace.
so unless your doing stupid things like some people just asking to get caught you should have no worries at all mate.