There is really no way to block spam or robocalls on your iPhone. T-Mobile and Comcast have started rolling out a tool that will alert their subscibers if a call wasn't made by a human, and there is always the National Do Not Call Registry. However, these resources won't put an end to your phone being bombarded with spam calls.
Google has added new options to Google Account settings. While Location History and Web & App Activity can be toggled off completely, now they can be configured to automatically delete after 3 months or 18 months. Google will remove this history from your account on a rolling basis.
When it comes to privacy, the iPhone, iPad and iPod touch always ask permission for apps to access the Camera Roll. There are several levels of permission granted to apps, spanning from full read and write access to never see photos. If you're interested in checking to see which apps have access to your photos, this information can be seen in one place.
Judging from the number and magnitude of incidents involving Facebook over the past few years, that the social media giant is playing fast and loose with user data is probably an understatement. While it is now putting extra effort into user privacy, it has a long way to go, and you should do everything in your power to protect your data. One of the easiest paths for your private information to leak out is through third-party apps that have permissions to your account.
Many websites and third-party apps will ask for permission to access your Google account for a variety of reasons. They will request different levels of access, ranging from basic profile info used to "sign in with Google" (similar to sign in with Facebook) up to full access to view and edit all data and even create content, which is a scary prospect. It should be obvious by now that you need to take great care regarding your data privacy, so you should know how to see who you've given access to, and how to revoke it if need be. Here's how to do it from your iPhone or iPad: