Why mobile security updates matter
Mobile security updates help to protect your phone against known vulnerabilities. These are weaknesses in the software that could allow unauthorised access, data theft, or malicious activity.
Security updates are different from feature updates. Feature updates usually add or improve functions, while security updates are designed to reduce risk.
If your device is not updated, it can become easier for criminals to target.
What to do
- Install updates as soon as they are available
- Turn on automatic updates where possible
- Check regularly that your phone is still receiving security updates
- Before buying a new phone, consider how long it is likely to keep receiving updates and support
How to check for updates
- For Android, open Settings > System > Software updates/System updates. (The exact steps can vary slightly depending on the make and model)
- For iPhone, open Settings > General > Software Update. You can also turn on Automatic Updates from the same menu. You should check out a guide on how to update your iPhone or iPad.
If your phone is no longer supported
Phones don’t receive security updates forever. When support ends, important fixes may no longer be available. If you phone is no longer receiving updates, you can continue to use it, however, it will no longer be considered safe to use.
They safest option is to replace the device when you can.
If you need to keep using it temporarily:
- Make sure it has the latest available software installed
- Only install apps from the official app store
- Avoid downloading apps or APK files from websites or other unofficial sources
- Delete apps you do not use/need
- Avoid using the device for sensitive tasks such as online banking or for work
App safety and device integrity
App safety and device integrity
Apps can also introduce security risks, especially if they come from unofficial sources.
- For Android devices, stick to the Google Play Store and avoid installing APK files from websites.
- For iPhones, do not jailbreak the device. Jailbreaking can remove built-in security protections and increase the risk of malicious apps.
If you buy a phone second-hand, factory reset it before use
If you have any concerns, or have been affected by a cyber-related issue, report it to us by submitting a Cyber Concerns Online Reporting Form.
This page was last reviewed 31/03/2026.