How to Improve Your Phone's Security Score: A Complete 2026 Guide

Your smartphone holds more sensitive data than your wallet, your filing cabinet, and your computer combined. Banking apps, private messages, health records, work emails, and years of personal photos all live behind a single lock screen. That's why both Android and iOS now provide a built-in "security score" or security checkup feature designed to rate how well-protected your device actually is. If yours looks mediocre, you're not alone, but you can fix it faster than you think.

This guide walks through exactly how to improve your phone security score, what each setting actually does, and which habits make the biggest difference in real-world protection.

What Is a Phone Security Score?

A phone security score is a numerical or categorical rating generated by your operating system, mobile security app, or device manufacturer that evaluates how well your device is protected against common threats. It typically factors in software updates, screen lock strength, app permissions, encryption status, account protections, and network safety.

On Android, you'll find this under Settings > Security & Privacy, where Google Play Protect and the Security Checkup tool combine to give you a status rating. On iPhone, Apple's Safety Check and Privacy Report features serve the same purpose, while third-party tools like Bitdefender, Norton Mobile, and Lookout generate their own composite scores.

The score itself doesn't protect you, but it's an excellent diagnostic. A low score almost always points to specific, fixable weaknesses. Let's go through the most impactful ways to raise it.

1. Install System and App Updates Immediately

The single biggest lever on your security score is keeping your operating system and apps current. Updates patch vulnerabilities that attackers actively exploit, often within days of disclosure.

How to enable automatic updates

1. iPhone: Go to Settings > General > Software Update > Automatic Updates, then toggle on both "Download iOS Updates" and "Install iOS Updates."
2. Android: Open Settings > System > Software Update and enable automatic download. Also open the Play Store > Settings > Network preferences > Auto-update apps.
3. Reboot your phone at least once a week so pending updates actually install.
4. Check for firmware updates for connected accessories (watches, earbuds) in their companion apps.

Devices older than five years often stop receiving security patches. If yours is in that bracket, no setting change will fully compensate, and upgrading hardware becomes a security decision rather than a luxury.

2. Strengthen Your Screen Lock and Biometrics

A four-digit PIN can be brute-forced in under an hour if someone gets physical access to your device. Modern security scoring systems weigh this heavily.

Recommended lock settings

• Use a six-digit numeric passcode at minimum, or ideally an alphanumeric passphrase of 8+ characters.
• Enable Face ID, Touch ID, or fingerprint unlock as a convenience layer on top of, not instead of, a strong passcode.
• Set auto-lock to 30 seconds or 1 minute, never "Never."
• Enable "Erase Data after 10 failed attempts" on iPhone or equivalent wipe protection on Android.
• Disable notification previews on the lock screen so messages, 2FA codes, and emails aren't visible to shoulder-surfers.

3. Turn On Full-Device Encryption

Encryption scrambles the data on your phone so it's unreadable without your passcode. Modern iPhones encrypt by default when you set a passcode, and most Android devices from the last five years do too, but it's worth verifying.

On Android, check Settings > Security > Encryption & credentials. If it says "Encrypted," you're covered. If not, setting a strong lock screen typically triggers encryption on the next reboot. On iPhone, the presence of "Data protection is enabled" at the bottom of the Face ID & Passcode screen confirms it.

4. Audit App Permissions Ruthlessly

Every app you've installed asked for permissions. Most got more than they needed. A flashlight app does not need your contacts. A game does not need your microphone running in the background.

The permission audit process

1. Open Settings > Privacy (iPhone) or Settings > Security & Privacy > Permission Manager (Android).
2. Go through each category: Location, Microphone, Camera, Contacts, Photos, Health, Bluetooth.
3. For each app listed, ask: "Does this app need this permission to function?" If not, revoke it.
4. Set location access to "While Using the App" or "Ask Next Time" rather than "Always."
5. For photo access, use the "Selected Photos" option instead of granting full library access.
6. Delete apps you haven't opened in 90 days. They're an attack surface for zero benefit.

5. Enable Two-Factor Authentication Everywhere

Your phone's security score is tied to the security of the accounts it signs into. A perfectly hardened device logged into a compromised Google or Apple ID is still compromised.

Enable two-factor authentication (2FA) on your Apple ID, Google account, email, banking, and social media. Prefer authenticator apps (Google Authenticator, Authy, 1Password) or hardware security keys over SMS codes, since SMS is vulnerable to SIM-swap attacks.

Comparison of 2FA methods

Method	Security Level	Convenience	Best For
SMS code	Low	High	Last resort only
Email code	Low-Medium	High	Low-value accounts
Authenticator app	High	Medium	Most accounts
Push notification (e.g. Google Prompt)	High	Very High	Primary accounts
Hardware key (YubiKey, Titan)	Very High	Medium	Email, finance, admin accounts
Passkeys	Very High	Very High	Any supported service

6. Use a Password Manager

Reused passwords are the root cause of most account takeovers. When one service gets breached, attackers try the same credentials everywhere else. A password manager generates and stores unique, random passwords for every site.

Both iOS Keychain and Google Password Manager are free, built-in, and sync across devices. Dedicated options like 1Password, Bitwarden, and Dashlane add features like secure sharing, breach monitoring, and cross-platform support. Pick one and migrate everything within a week.

7. Review Your Browsing and Link Habits

A huge percentage of mobile compromises start with a tap on a malicious link in an SMS, email, or social DM. Your phone's security score often can't see this directly, but phishing is the number-one real-world threat.

Safer link habits

• Never tap links in unexpected messages claiming to be from banks, couriers, or tax authorities. Open the app directly instead.
• Use a privacy-focused browser like Safari with "Prevent Cross-Site Tracking" enabled, Firefox Focus, or Brave.
• Enable encrypted DNS (DNS over HTTPS or DNS over TLS) in your phone's network settings to prevent eavesdropping and DNS-based phishing.
• When sharing links yourself, use a reputable shortener that offers click analytics and safety checks. For example, Lunyb is a privacy-conscious URL shortener that lets you create trackable short links without the heavy tracking baggage of ad-supported alternatives. If you're evaluating options, see our 2026 buyer's guide to URL shorteners.
• Hover-preview or long-press a short link before tapping to see the real destination.

8. Lock Down Your Network Connections

Public Wi-Fi in cafes, airports, and hotels remains a common weak point. Attackers on the same network can intercept unencrypted traffic or run captive-portal phishing pages.

• Disable auto-join for unknown Wi-Fi networks in Settings > Wi-Fi.
• Turn off Bluetooth and AirDrop/Nearby Share when you're not actively using them, especially in crowded public spaces.
• Use encrypted DNS (Cloudflare 1.1.1.1 or NextDNS) for network-level filtering of known malicious domains.
• Verify sites load over HTTPS before entering credentials. Modern browsers warn you if they don't.
• Forget old Wi-Fi networks you no longer use, so your phone stops advertising them.

9. Enable Find My Device and Remote Wipe

A lost or stolen phone is a security incident, not just a hardware loss. Both Apple and Google provide free tools to locate, lock, and erase your device remotely.

1. On iPhone, go to Settings > [Your Name] > Find My > Find My iPhone and enable all three toggles, including "Send Last Location."
2. On Android, open Settings > Security & Privacy > Find My Device and ensure it's on. Verify you can see your phone at google.com/android/find.
3. Enable the Stolen Device Protection feature on iOS 17.3 and later, which requires biometric authentication for sensitive changes when your phone is away from familiar locations.
4. Write down your IMEI (dial *#06#) and store it somewhere other than your phone.

10. Run a Monthly Security Checkup

Security isn't a one-time setup. New apps get installed, permissions drift, and your digital footprint changes. Schedule a recurring 15-minute monthly review.

Monthly checklist

• Run the built-in Security Checkup on both your phone and your Google/Apple account.
• Review recent sign-in activity for your main accounts and revoke unfamiliar sessions.
• Delete apps you haven't used in the last month.
• Check Have I Been Pwned (haveibeenpwned.com) for any new breaches involving your email.
• Reboot your phone to install pending updates and clear memory-resident issues.
• Review Privacy Report (iPhone) or Privacy Dashboard (Android) to see what your apps actually accessed.

Common Mistakes That Lower Your Security Score

Even security-conscious users trip on these:

• Sideloading apps from unofficial sources without verifying signatures. Stick to Apple App Store and Google Play unless you have a specific, informed reason.
• Ignoring expired certificates and browser warnings. They exist for a reason.
• Using the same email for everything. Consider a secondary email for low-trust signups.
• Leaving developer options or USB debugging enabled on Android after tinkering.
• Granting accessibility permissions to apps that don't genuinely need them. This permission can be abused to read your entire screen.
• Jailbreaking or rooting for cosmetic reasons. You lose most built-in security guarantees.

Prioritized Action Plan

If you can only do five things today, do these in order:

1. Install all pending OS and app updates, then reboot.
2. Switch to a six-digit or alphanumeric passcode and enable biometrics.
3. Turn on 2FA for your email, Apple ID or Google account, and primary bank.
4. Audit and revoke unnecessary app permissions, especially location, microphone, and contacts.
5. Enable Find My Device and verify remote wipe works.

Do these five and your security score will typically jump from mediocre to strong overnight. The remaining items are refinements that push you from strong to excellent.

FAQ

How often should I check my phone's security score?

At least monthly, and any time you install a batch of new apps, travel internationally, or receive a security alert from one of your accounts. Both iOS and Android now surface recommendations proactively, so act on notifications when they appear rather than dismissing them.

Does using a password manager really improve my security score?

Indirectly, yes. Most scoring systems check whether iCloud Keychain or Google Password Manager is active and whether you have reused or compromised passwords. Switching to unique, generated passwords eliminates the single biggest cause of account takeover and will typically clear a batch of warnings in one go.

Are free mobile antivirus apps worth installing?

On iPhone, no. The operating system's sandboxing makes traditional antivirus unnecessary and, in most cases, impossible. On Android, Google Play Protect handles most malware scanning natively. Reputable third-party apps from Bitdefender, Malwarebytes, or ESET can add value for phishing protection and Wi-Fi scanning, but avoid unknown free apps, which often sell data themselves.

Is biometric unlock less secure than a passcode?

Biometrics and passcodes serve different threat models. Face ID and modern fingerprint sensors are harder to bypass than a short PIN in day-to-day use, but legally and technically a strong passcode remains the root of trust. The best setup uses biometrics for convenience with a strong alphanumeric passcode as the fallback.

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

Use another device to sign in to iCloud or your Google account, mark the phone as lost (which locks it and displays a contact message), and if recovery looks unlikely, trigger a remote erase. Then change passwords for your email, banking, and any accounts with stored credentials, and contact your carrier to suspend the SIM to prevent SIM-swap attempts.