Which phone do you use?
What mobile phone are you using?
What is cell phone? What is a cell phone? What is a cellphone? How do you use your smartphone? What is the difference between a cell phone and mobile phone? What was your first mobile phone? What was your first mobile/cell phone? What is your favorite mobile app and why? Why mobile phone is also know as cell phone? What is the most used app in your phone? Which T-Mobile phones have Wi-Fi calling? What are the advantages of using a mobile phone? What is the best use of an android phone? Who uses Windows phones? Why? Which kind of phone was your first cell phone? Can a tablet be used as a cell phone? What was your first mobile phone? Its specificatons? What are the best technology for mobile phones? What games you play on your smartphone? Which phone do I buy? What amazing things can you do using a smartphone? What are the 10 best mobile devices? Can you tell me what phone is in the picture? Other than surfing the Internet, calling, and messaging; What is the most common thing people do with their mobile devices? What's your favorite Android mobile App and why? Do you prefer Android or Windows Phone? What is your favorite app on your phone? Why is a mobile phone also called a cell phone? Which is better cell phone or Tablet? Which mobile phone is better, Samsung or Apple? Which one has more users around you?