Glad you were OK and no one was injured.
Are you the type of person who thinks people should pay for their own rescues when they get in trouble in the backcountry? Did you leave a travel plan with someone? Check the ice before traveling on it? You were very lucky to be in cell range. I really hope you’ll do more to prevent this than just a whistle and a flotation device.
How did they rescue you from the sandbar?