Mike Sorrentino is a Senior Editor for Mobile, covering phones, texting apps and smartwatches -- obsessing about how we can make the most of them. Mike also keeps an eye out on the movie and toy ...

If you receive a PDF or other digital file that requires your signature, you can easily do so using your phone. Whether you use an iPhone or an Android phone, both include built-in options for adding ...

Google Docs features tools that let you write, edit, and format text documents. All you need is a Google account and a web browser. You can also collaborate with other users in real time. The word ...