Should Bouagada investigate the performance of digital cell phone operations' the performance of digital cell phones. November operations: (Click the icon to view the financial data.) Requirement cell phone operations? Why or why not? f digital cell phone operations? Why or why not? the performance of digital cell phones. Should Bouagada investigate the performance of digital cell phone operations? Why or why not? the performance of digital cell phones. Show November results for the total cell phone product line. (Enter unfavourable variances with a minus sign or parentheses.) Show November results for all handheld devices. (Enter unfavourable variances with a minus sign or parentheses.) Manager - All Handheld Devices Variance Favourable Financial Data