Don't Know Your Phone Model? Try opening the battery compartment; your model name and number should be located next to the barcode in the compartment area, or, in some cases, under the battery.
Customizable calculator and equation solver: 12 function buttons for the calculations YOU want: math, engineering, finance, conversion... Unlimited number of functions and equations. Optional RPN.
Outliner and to-do list manager. Ideal for hierarchical lists of all sorts: meeting notes, presentations, projects, orgcharts, mind mapping, checklist, shopping, collections.