Be proactive to avoid hackers that steal contacts, data, email, photos, and texts. Do not click on links or download documents when using a smartphone. Be safe by installing updates, limiting the number of apps, and using an authenticator on your phone. Enable filtering so that texts from unknown senders are segregated from other senders. Use your phone's hotspot (instead of public Wi-Fi networks) to connect laptops and tablets to the Internet. Click here to learn more about protecting yourself and your phone. And click here for a slideshow about smartphone security.