Crossword on Mobile Data Collection

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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3       4              5   
        6            
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    8                
   9         10          
11    12                  
                  
     13               
                  
14   15                16     
        17            
                  
18      19        20          
         21           
22             23         
                  
 24       25