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

Your smartphone holds more sensitive information than your wallet, your desk drawer, and your filing cabinet combined. Banking apps, private messages, health data, work emails, photos, location history—all of it lives in a device that fits in your pocket. That's why phone manufacturers and security tools now assign your device a "security score," a numeric or letter grade summarizing how well-protected you are against modern threats.

If your score is low, don't panic. Improving it is largely a matter of tweaking settings, updating habits, and being deliberate about what you install and share. This guide walks you through every meaningful step you can take to improve your phone security score in 2026, whether you use iOS or Android.

What Is a Phone Security Score?

A phone security score is a rating—usually between 0 and 100—that reflects how resistant your device is to common threats like malware, phishing, unauthorized access, and data leaks. It's calculated by built-in tools (such as Google's Security Checkup or Apple's Safety Check) or third-party security apps that scan your settings, permissions, and installed software.

Most scoring systems evaluate factors in five categories:

1. Operating system health — Are you running the latest patched version?
2. Authentication strength — Do you use biometrics, strong passcodes, and two-factor authentication?
3. App hygiene — Are your installed apps trustworthy, updated, and minimally permissioned?
4. Network safety — Are you protected against unsafe Wi-Fi and DNS-based attacks?
5. Data protection — Is your device encrypted, backed up, and recoverable if lost?

Improving your score means improving each of these dimensions. Let's dig into the specific actions that move the needle.

Step 1: Update Your Operating System and Apps

Software updates are the single highest-impact action for your security score. Every major OS release patches vulnerabilities that attackers actively exploit—often within days of disclosure.

Enable automatic updates

• iOS: Settings → General → Software Update → Automatic Updates → toggle on "Download iOS Updates" and "Install iOS Updates."
• Android: Settings → System → Software update → Auto download over Wi-Fi (menu varies by manufacturer).

Update apps too

Outdated apps are just as risky as outdated operating systems. In the App Store or Google Play, enable automatic app updates. Once a month, manually review apps that haven't been updated in over a year—these are often abandoned by developers and represent an unpatched attack surface. Uninstall anything you don't actively use.

Step 2: Strengthen Your Lock Screen and Authentication

A four-digit PIN can be cracked in minutes if someone gains physical access to your phone. Modern security scores heavily weight authentication strength.

Upgrade your passcode

Switch from a 4-digit or 6-digit numeric code to an alphanumeric passcode of at least 8 characters. On iOS: Settings → Face ID & Passcode → Change Passcode → Passcode Options → Custom Alphanumeric Code. On Android, the exact path depends on your manufacturer, but you'll find it under Settings → Security → Screen lock.

Enable biometrics carefully

Face ID and fingerprint unlock are convenient and secure for most users. However, be aware that in some jurisdictions, law enforcement can compel you to unlock with biometrics but not with a passcode. If that matters to you, learn your device's emergency lockout gesture (on iPhone, press and hold the side button plus a volume button to require passcode entry).

Turn on two-factor authentication (2FA) for every account

2FA blocks the vast majority of account takeovers. Use an authenticator app (like Aegis, Raivo, or 1Password) rather than SMS whenever possible, since SIM-swap attacks can intercept text messages. For your most critical accounts—email, banking, cloud storage—consider a hardware security key.

Step 3: Audit App Permissions

Most apps ask for far more access than they need. A flashlight app doesn't need your contacts. A photo filter doesn't need your microphone. Every unnecessary permission is a potential data leak.

Run a permission audit

1. Open Settings → Privacy & Security (iOS) or Settings → Privacy (Android).
2. Go through each category: Location, Microphone, Camera, Contacts, Photos, Health, Bluetooth.
3. For each app listed, ask: "Does this app genuinely need this to do its core job?"
4. Revoke anything questionable. Choose "Ask Next Time" or "While Using" instead of "Always" whenever possible.

Watch for background activity

Both iOS and Android now show which apps have accessed sensors recently. iOS has a Privacy Report (Settings → Privacy & Security → App Privacy Report). Android shows a Privacy Dashboard. Review these monthly. Any app quietly using your microphone or location in the background is a red flag.

Step 4: Lock Down Your Network Connections

Public Wi-Fi networks in cafes, airports, and hotels are convenient—and risky. Attackers can create fake hotspots, intercept traffic, or redirect you to phishing sites.

Use encrypted DNS

Encrypted DNS (DNS over HTTPS or DNS over TLS) prevents your carrier, your Wi-Fi provider, and network eavesdroppers from seeing which websites you visit. On iOS, you can install a configuration profile from providers like Cloudflare (1.1.1.1) or Quad9. On Android 9+, go to Settings → Network & internet → Private DNS and enter a provider hostname like one.one.one.one or dns.quad9.net.

Disable auto-join for unknown networks

Your phone probably auto-connects to any network named "attwifi" or "xfinitywifi" it has ever seen. Attackers exploit this by broadcasting the same network name. Turn off auto-join for public networks: iOS Settings → Wi-Fi → tap the network → Auto-Join off.

Turn off Bluetooth and Wi-Fi when not in use

Beyond battery savings, disabling these radios shrinks your attack surface. Bluetooth vulnerabilities in particular have been used for zero-click exploits in the past.

Step 5: Encrypt and Back Up Your Data

Modern iPhones and Android devices encrypt storage by default when you set a passcode. But encryption alone doesn't protect you from theft or hardware failure—you also need reliable backups.

Verify encryption is active

On iOS, encryption is automatic once you enable a passcode. On Android, go to Settings → Security → Encryption & credentials to confirm your device is encrypted.

Set up encrypted backups

iCloud Backup encrypts data in transit and at rest. For maximum protection, enable Advanced Data Protection (iOS 16.2+): Settings → [Your Name] → iCloud → Advanced Data Protection. This applies end-to-end encryption to nearly all iCloud categories. On Android, Google One backups are encrypted with a key tied to your device passcode.

Step 6: Browse and Click Safely

Even a perfectly configured phone can be compromised by a single bad click. Phishing links delivered by SMS, email, or messaging apps remain the number-one delivery vehicle for mobile threats.

Inspect links before tapping

Long-press any link on iOS or Android to preview the full URL before opening. Look for misspellings (paypa1.com), unusual TLDs, or long random subdomains designed to hide the real destination.

Use a trustworthy link shortener when sharing

When you share links yourself, use a reputable shortener that gives recipients confidence the destination is legitimate. Services like Lunyb offer link previews, click analytics, and abuse detection so you and your audience aren't exposed to malicious redirects. If you want to compare options, see our 2026 buyer's guide to URL shorteners or our honest review of Lunyb.

Enable browser-level protections

Safari's Fraudulent Website Warning and Chrome's Safe Browsing are on by default—confirm they're still enabled. Consider a privacy-focused browser like Brave or Firefox Focus for casual browsing; both block trackers and ads that can carry malicious payloads.

Step 7: Manage Installed Apps Aggressively

The average smartphone user has more than 80 apps installed but actively uses fewer than 30. Every unused app is a potential vulnerability.

Only install from official stores

Sideloaded apps from unknown websites bypass the review processes that catch most malware. If you must sideload on Android, ensure Google Play Protect is enabled to scan the app.

Check app reputation before installing

• Look at the developer name—does it match a known company?
• Read recent reviews, especially 1-star reviews that mention scams or excessive permissions.
• Check when the app was last updated. Abandoned apps are risky.
• Search the app name plus "malware" or "scam" before installing anything obscure.

iOS vs. Android Security Features Compared

Both platforms have matured dramatically, but they take different approaches. Here's how key protections stack up in 2026:

Feature	iOS (iPhone)	Android
Default full-disk encryption	Yes, automatic with passcode	Yes, on all devices from Android 10+
App sandboxing	Strict, enforced by OS	Strict, enforced by OS
Third-party app stores	Allowed in EU only (2024+)	Allowed globally
Update lifespan	5–7 years typical	4–7 years (varies by maker; Pixel and Samsung lead)
Built-in security dashboard	Safety Check, Privacy Report	Security & Privacy hub, Privacy Dashboard
Hardware security chip	Secure Enclave	Titan M2 (Pixel), Knox (Samsung), etc.
End-to-end encrypted backups	Advanced Data Protection (opt-in)	Google One backups (default)

Pros and Cons of Third-Party Security Apps

You may be tempted to install a mobile antivirus or "phone booster" app. Here's an honest breakdown.

Pros

• Consolidated dashboard showing your score and specific fixes
• Real-time phishing URL scanning in messages
• Data-breach monitoring for your email addresses
• Wi-Fi network safety checks

Cons

• On iOS, they're largely limited by sandboxing and can't do much beyond what iOS offers natively
• Some "free" security apps monetize by selling your data—the opposite of what you want
• Overlapping features with built-in tools can drain battery and slow performance
• Subscription costs add up ($30–$100/year)

For most users, the built-in security tools plus disciplined habits will produce a higher score than any paid app. Reserve third-party tools for specific gaps, like breach monitoring or family device management.

A 15-Minute Monthly Security Routine

Improving your score is a one-time project. Maintaining it is a monthly habit. Block 15 minutes on your calendar and run this checklist:

1. Install pending OS and app updates.
2. Review the Privacy Report or Privacy Dashboard for unexpected sensor access.
3. Delete apps you haven't opened in 30+ days.
4. Check your password manager for weak or reused passwords.
5. Review 2FA settings on your email and banking accounts.
6. Scan recent SMS and email for phishing attempts you may have overlooked.
7. Verify backups completed successfully in the last week.

Frequently Asked Questions

What is a good phone security score?

Most scoring tools use a 0–100 scale. A score above 85 is considered strong, 70–85 is acceptable but has room to improve, and anything below 70 means you have meaningful vulnerabilities worth addressing immediately. Aim for 90+ if you handle sensitive financial or business data on your device.

Does using biometrics like Face ID lower my security?

No—biometrics generally improve security because they encourage you to lock your phone more consistently. The underlying passcode remains the fallback, so make sure that passcode is strong. The only meaningful concern is in legal contexts where authorities may compel biometric unlock; a strong passcode plus knowing your emergency lockout gesture addresses this.

How often should I restart my phone for security?

Rebooting weekly is a good practice. Many sophisticated exploits are non-persistent, meaning they don't survive a reboot. Both Apple and government security agencies have publicly recommended regular restarts as a low-effort, high-benefit habit.

Are free public charging stations safe?

Not entirely. "Juice jacking" attacks use compromised USB ports to steal data or install malware. Use your own charger plugged into a wall outlet whenever possible. If you must use a public USB port, use a USB data blocker (a small adapter that allows power but blocks data pins) or enable USB Restricted Mode in your settings.

Do I need to worry about SIM-swap attacks?

Yes, especially if you use SMS-based 2FA for financial accounts. Contact your carrier and add a port-out PIN or SIM lock to your account. Where possible, migrate 2FA away from SMS toward authenticator apps or hardware security keys. If your phone suddenly loses signal for no apparent reason and doesn't reconnect, treat it as a possible SIM-swap in progress and contact your carrier immediately.

Final Thoughts

A high phone security score isn't about paranoia—it's about making the default answer to attackers "no, not today." Every step in this guide takes only a few minutes but compounds into meaningful protection. Start with the highest-impact actions (updates, strong passcode, 2FA, permission audit) and work your way through the rest over the course of a week. Then build the 15-minute monthly routine into your calendar and let good habits do the rest.

Your phone is the most personal computer you'll ever own. It deserves the same care you'd give the locks on your front door.