Keep Your iPhone Up to Date
This is a tip everyone suggests — even the NSA — and there’s a reason for that. Updating your iPhone can have many benefits.
For starters, Apple might release a new patch that fixes a vulnerability in your iPhone that you didn’t know about. Moreover, updates also bring improvements to security. Not to mention you might also get new features you didn’t know you needed.
Needless to say, there’s no reason not to keep your iPhone up to date. Apple even lets you install security updates in case you don’t want a new version of iOS on your iPhone just yet.
To ensure you have the latest software update, go to Settings > General > Software Update and check for a new update that you can install.