In June of last year, Google introduced phone prompts that made using two-step verification easier than ever. These proved popular, being more secure and simple to use than SMS codes. In February of this year, Google updated these prompts to show more information about the device attempting to sign into your account. And soon, the company will begin pushing these prompts to users of the older, less seamless SMS two-step verification method.
Google is trying to get SMS 2-step verification users to switch to phone prompts was written by the awesome team at Android Police.