Small Lesson learned on pray

So I know that God ALWAYS answers my prayers no matter how small they are.  Like when I lost my mail key. I couldn't find it until I said a prayer asking for help.  Well today I came home and some how had lost my phone.  I even did the GPS and it said it was in my house but I COULD NOT find it.  Oh and calling it doesn't help when its on silent.  So I said several prayers but still could not find it.  So then my son got to help look.  Still couldn't find it.  Not until we stopped and together said a prayer did I find my phone (like 1 min later).  The lesson learned was that my son needed to see my faith and also express his own in God's power to help us.