With news of a major hack breaking almost every week this year, it can be hard to keep track of whether your data is safe.
Hackers have targeted mobile devices with increasing frequency, aiming to track users' activity, steal their data, or trick users into disclosing sensitive information for financial gain.
Most of the attacks are specific to a smartphone's operating system, carrier, or a specific app, so in some cases it's possible to rule yourself out as a potential hacking victim.
If that's not possible, your best bet may be to monitor your device closely for unusual activity and contact your provider to check whether your smartphone has been compromised.
Here's a rundown of recent smartphone hacks, and what we know about who might be affected.