Mobile Security: 5 Critical Phone Settings You Should Check Right Now

Why smartphones have become a prime target for fraud and data theft

Social engineering and unsolicited emails, text messages, and calls have become favorite tools for fraudsters. Reported losses by complainants surged 33%, totaling $16.6 billion in 2024 (Federal Bureau of Investigation (FBI), 2025). Phones are valuable to fraudsters and scammers because they enable quick access to email, payment applications, and other accounts.

Mobile devices store sensitive financial information

In many instances, your phone is a gateway to all other accounts. It stores saved passwords, 1-time codes, and recovery emails in 1 place. If someone unlocks your device, they may reach your banking details and other personal data. Further, if you’re signed in to your email on your phone, they can reset other passwords.

Why attackers focus on phones instead of computers

Phones are built for instant responses, so scammers can easily attack you via texts, calls, and push notifications. Attackers target smartphones because they store passwords, payment apps, financial information, and verification codes. They also exploit the fact that many people leave phones unlocked in shared spaces.

The risks of relying on default security settings

By default, most phones display notification previews, grant broad permissions, and delay updates. These settings are built for ease, not your personal risk level. Treat defaults as a baseline, then tune your mobile security settings to eliminate risks.

Setting #1 - Strengthening screen lock and biometric security on your phone

Your lock screen is the front door to everything on your phone. Start by tightening your phone's lock screen and shortening the auto-lock window.

Pins, passwords, and biometric options

Most phones support a PIN, a longer passcode, or a full password, along with fingerprint or face unlock. Consumer protection guidance recommends automatic locking and the use of a PIN or passcode, with biometrics as an additional layer. (Federal Trade Commission (FTC), 2024). Biometrics are fast, yet you still need a strong passcode as a backup. Pick the option you’ll keep turned on every day.

Why longer passcodes offer better protection

Longer codes are harder to guess and harder to shoulder surf. So, go beyond the shortest option. Skip obvious patterns, repeats, and obvious sequences like 123456. A longer code that you can still remember is one of the simplest phone security tips with an immediate payoff.

Auto-lock timing best practices

A strong passcode is useless if your screen stays unlocked for minutes after you set it down. Auto‑lock closes the door when you set the phone down. Choose an idle time that’s short enough to limit exposure. Approximately 30 seconds to 2 minutes for the phone lock screen is ideal.

Add multifactor authentication

Multifactor authentication (MFA) adds another layer of protection if someone gets past your lock screen or discovers your passcode. Using an authentication app or security key makes it much harder for anyone to access your accounts, even with your phone in hand. Turn it on for email, banking, and cloud accounts to significantly reduce the risk of unauthorized access.

Setting #2 - Reviewing app permissions to limit unnecessary data access

Permissions determine what each app can access and use. A quick review of app permissions strengthens smartphone privacy and security by trimming data exposure.

Common permissions apps request

Apps commonly request location, contacts, photos, camera, microphone, Bluetooth, and notifications. While some are essential, most requests are optional depending on how you use the app. Ask yourself whether an app truly needs that access for its core purpose. If not, deny it or choose a more limited option.

Identifying permissions that don’t match app function

Use a quick “does this make sense?” test before granting access. If a basic utility app requests access to contacts, the microphone, or your full photo library, that is a warning sign. Select the most restrictive option in app permissions and expand only if needed. What if an app requests too much info? In such cases, the Australian Cyber Security Centre (2024) recommends removing apps that request excessive access without a clear reason.

How limiting access reduces exposure

Reducing permissions limits what an app can collect, share, or leak, especially if the app is compromised or its data handling is sloppy. It also reduces spillover risk, such as a random app seeing sensitive notifications or location data, which can be used to make phishing messages more believable. Treat app permission reviews as part of your mobile security settings routine.

Setting #3 - Keeping operating systems and apps updated automatically

Automatic updates reduce the chance you’ll postpone security fixes because you’re busy. If you want stronger mobile security settings with minimal effort, start here.

Why updates matter for security

Updates fix vulnerabilities that criminals already know about. In many instances, updates are less about new features and more about closing gaps. When a vulnerability becomes public, attackers move fast. Staying current shrinks their window. When you run automatic updates, your mobile security settings stay strong.

Risks of delaying software updates

Outdated software creates risk. Typically, delays leave your phone exposed to weaknesses that criminals already know how to exploit. The National Institute of Standards and Technology (NIST) warns that outdated OS versions increase risk and should be carefully considered, because they can be “stuck” and unable to be updated in some cases (NIST, 2013).

Enabling automatic updates safely

To avoid exploitation, enable automatic updates for both your operating system and your apps. If data usage is a concern, set updates to run on Wi‑Fi or overnight. Remember to clear storage space, so automatic updates do not fail silently. Also, schedule a quick monthly check to confirm that they are still enabled.

Setting #4 - Enabling alerts and notifications for account and device activity

Alerts help you notice problems early: a new login, a password change, or a transaction you didn’t make. Think of account alerts as your early-warning system.

Financial account alerts

As you implement other mobile banking safety tips, enable account alerts for purchases, transfers, new payees, and key profile changes. These alerts warn you about fraud and help you spot mistakes quickly, like a charge you didn’t recognize.

Login and password change notifications

Login alerts matter most for your email and financial accounts because email is often the reset point for everything else. Enable alerts for new logins and password changes on email and financial accounts first. Then complement them with secure passwords and multi-factor authentication as extra measures to protect smartphone privacy and security.

How early alerts reduce damage

A “new login” alert for account access you didn’t initiate is an early warning sign. In most attacks, login alerts are the first warning and should prompt a password reset before a scammer digs deeper. To ensure vigilance, turn on alerts for login attempts, purchases, and transfers.

Setting #5 - Turning on device tracking, remote lock, and remote wipe features

Now that your accounts are better protected, it’s time to plan for the possibility of losing your phone. Even careful people can accidentally leave devices in public places. So, turn on device tracking and determine when you would use a remote wipe.

How tracking helps recover lost devices

Device tracking helps you locate a misplaced phone or confirm whether it’s nearby or moving. It also lets you remotely lock the screen or display a message with contact information, which can increase the likelihood of recovery.

When and how to use remote wipe

First, remote lock is typically the initial step in recovering your device. Second, remote wipe protects your information, but it can also erase data you haven’t backed up. To avoid data loss, enable cloud backup for essentials like photos and contacts. Then decide when to wipe, either after a set time or upon theft confirmation.

Preparing before a phone is lost or stolen

Confirm that backups are running and tracking is enabled, and check whether you can sign in to your device account from another device if needed. In addition, save support numbers for your financial institutions and wireless carrier in a secure place that isn’t your phone, because you don’t want to hunt for them mid-incident.

Additional mobile security habits that further reduce risk

Once you’ve checked the 5 settings above, you’ve covered the biggest risk reducers. What’s left are habits that keep those settings effective. These are everyday phone security tips that reduce your exposure.

Avoid unsecured public Wi-Fi: Public Wi-Fi can be intercepted, so be cautious about what you send and receive. Use cellular data for logins and money transfers when you can. Additionally, disable auto-join so your phone does not connect without you noticing.

Use official app stores only: Stick to official app stores and check reputation before installing. Install fewer apps to reduce permission sprawl and update fatigue. After installing, run a quick permission check in your mobile security settings.

Recognize phishing attempts: Phishing relies on urgency: “verify now,” “last chance,” or “your account is locked.” Unfortunately, many people fall victim, which explains why phishing and spoofing were the most commonly reported cybercrimes in 2024. (FBI, 2025). Learn what is phishing, the common tactics used and avoid signing in via unexpected links. A good rule of thumb is to always open the official app instead of a random link.

If you’re interested in additional phone security tips, visit our security center for more information security and fraud prevention guides.

Mobile security quick decision checklist:

FAQs

Are smartphones more vulnerable to hacking than computers?

Not necessarily. Phones are often hit by text messages, calls, and app-based risks, while computers face more email- and download-based threats. The bigger factor is how tightly your smartphone privacy and security basics are set.

How often should mobile security settings be reviewed?

Review them monthly and after major app installations. Confirm that your app permissions, automatic updates, and account alerts are still on.

Do mobile security apps actually help?

Sometimes, however, they should not replace built-in protections. Some tools warn about risky links or networks, but the quality varies. Start with lock screen, permissions, updates, alerts, and device tracking, then add extras only if they support your phone security tips.

What should I do immediately if my phone is lost or stolen?

Lock and locate the phone with device tracking, then change passwords for email and financial accounts. Review recent account activity and contact your carrier if needed. If you cannot recover the phone, consider a remote wipe and notify your financial institutions as soon as possible.

Can security settings protect financial apps and accounts?

Yes, especially when combined with good account habits. Strong lock settings protect against physical access, while updates and app permissions reduce app-based exposure. Add account alerts and multi-factor authentication for earlier detection and stronger account control.

References

Federal Bureau of Investigation. (2025, April 23). 2024 IC3 annual report. https://www.ic3.gov/AnnualReport/Reports/2024_IC3Report.pdf

Federal Trade Commission. (2024, September 11). Three ways to protect the personal info on your phone. https://consumer.ftc.gov/consumer-alerts/2024/08/three-ways-protect-personal-info-your-phone

Australian Cyber Security Centre. (2024). Secure your mobile phone. https://www.cyber.gov.au/protect-yourself/securing-your-devices/how-secure-your-devices/secure-your-mobile-phone

National Institute of Standards and Technology. (2013). Guidelines for managing the security of mobile devices in the enterprise (SP 800-124 Rev. 1). https://www.govinfo.gov/content/pkg/GOVPUB-C13-5854831e4e44e83952dec80852edce47/pdf/GOVPUB-C13-5854831e4e44e83952dec80852edce47.pdf