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

Your smartphone holds your banking apps, private messages, photos, health data, and access to nearly every online account you own. A single weak setting can put all of it at risk. That's why many devices now display a security score, a simple metric that reflects how well your phone is protected against modern threats. If yours is low—or you've never checked it—this guide will walk you through exactly how to improve your phone security score, step by step.

What Is a Phone Security Score?

A phone security score is a numerical or letter rating that summarizes the overall protection level of your device based on its settings, installed apps, update status, and account hygiene. Android's Security Checkup, Samsung Knox, and iOS Safety Check all use similar concepts, even if the score isn't always visible as a single number.

The score typically weighs factors like screen lock strength, biometric setup, encryption status, unknown app sources, connected accounts, and pending system updates. Improving it isn't about chasing a perfect number—it's about closing the specific gaps attackers actually exploit.

Why the Score Matters

Mobile threats grew sharply in 2025, with SMS phishing (smishing), malicious apps, and network-level attacks becoming the top vectors. A higher security score directly correlates with lower risk of account takeover, financial fraud, and identity theft. Insurers, employers offering BYOD policies, and banking apps increasingly check device posture before granting access.

Step 1: Update Your Operating System and Apps

The single biggest boost to any phone's security score comes from keeping software current. Roughly 60% of exploited mobile vulnerabilities in 2025 had patches available for more than 90 days before the attack.

1. Open Settings → System → Software Update (Android) or Settings → General → Software Update (iOS).
2. Install any pending updates, including security patches released between major versions.
3. Enable Automatic Updates so future patches install overnight.
4. Open your app store, tap your profile, and update every app—especially browsers, banking apps, and messengers.
5. Uninstall apps you haven't opened in 90 days; unused apps are common backdoors.

Check for Firmware and Carrier Updates

Some manufacturers push firmware and carrier settings separately. On iPhone, these appear under Settings → General → About. On Android, look for "Carrier Services" and "Google Play system update" entries. Skipping these can leave modem-level vulnerabilities open.

Step 2: Strengthen Screen Lock and Biometrics

A weak lock screen is the fastest way to lose your data if your phone is stolen. Most security score systems heavily weight this factor.

• Replace 4-digit PINs with a 6-digit numeric code minimum—or better, an alphanumeric passcode.
• Enable Face ID, fingerprint, or equivalent biometrics for daily convenience.
• Turn on Erase Data after 10 failed attempts (iOS) or its Android equivalent.
• Set auto-lock to 30 seconds or 1 minute, not 5+ minutes.
• Disable lock screen notifications for sensitive apps like banking, email, and 2FA authenticators.

Consider a Dedicated "Lockdown" Shortcut

Both iOS and Android offer emergency lockdown modes that temporarily disable biometrics and require your passcode. This is critical in high-risk situations (border crossings, protests, or if you suspect someone is watching you type your PIN).

Step 3: Audit App Permissions

App permissions are one of the most overlooked security score factors. A flashlight app doesn't need contacts. A calculator doesn't need microphone access.

1. Navigate to Settings → Privacy → Permission Manager (Android) or Settings → Privacy & Security (iOS).
2. Review each category: Location, Camera, Microphone, Contacts, Photos, SMS, and Files.
3. Change any "Always Allow" to "While Using" or "Ask Every Time."
4. Revoke permissions from apps you don't recognize or rarely use.
5. Disable background location for everything except mapping and safety apps.

Pay special attention to Accessibility permissions on Android and Screen Recording on iOS. Malicious apps abuse these to log keystrokes and capture banking credentials.

Step 4: Enable Two-Factor Authentication Everywhere

Two-factor authentication (2FA) blocks over 99% of automated account takeover attempts, according to Microsoft's 2025 Digital Defense Report. Your security score will jump significantly once your primary accounts are protected.

Recommended 2FA Methods, Ranked

Method	Security Level	Convenience	Best For
Hardware security key (YubiKey, Titan)	Excellent	Medium	Email, cloud, crypto
Passkeys (device-bound)	Excellent	High	Everyday accounts
Authenticator app (Aegis, 2FAS, Authy)	Strong	High	Most accounts
Push notification approval	Strong	High	Work accounts
SMS codes	Weak	High	Last resort only

Move away from SMS-based 2FA where possible—SIM swap attacks remain one of the fastest-growing fraud categories.

Step 5: Secure Your Network Connections

Public Wi-Fi, rogue hotspots, and unencrypted DNS queries can leak your browsing activity even when your device itself is locked down.

• Turn off auto-connect to open Wi-Fi networks.
• Enable Private Wi-Fi Address / MAC randomization on every network.
• Configure encrypted DNS (DNS-over-HTTPS or DNS-over-TLS) using providers like Cloudflare 1.1.1.1, Quad9, or NextDNS.
• On iOS, enable iCloud Private Relay if you have iCloud+.
• On Android, set Private DNS to a trusted provider under Network settings.

Encrypted DNS prevents your carrier, coffee shop router, or curious neighbor from seeing which sites you visit—without adding the complexity of routing all traffic through third-party tunnels.

Step 6: Practice Safe Link Handling

Smishing (SMS phishing) is now the #1 mobile attack vector. Attackers send links disguised as delivery notifications, bank alerts, or job offers. One tap and you're on a credential-harvesting page.

1. Never tap links in unexpected texts—open the app directly instead.
2. Long-press links to preview the destination URL before opening.
3. Use a link expander or trusted URL shortener with preview features. Services like Lunyb let you create and share short links that are transparent about their destination, which is safer for both you and anyone you send links to.
4. Enable your browser's built-in phishing protection (Safe Browsing on Chrome, Fraudulent Website Warning on Safari).
5. Report suspicious messages to 7726 (SPAM) in the US, UK, and most global carriers.

If you send links professionally—for marketing, support, or team communication—choosing a reputable shortener matters. Our 2026 buyer's guide to URL shorteners compares the leading options on security, analytics, and pricing.

Step 7: Encrypt and Back Up Your Data

Modern iPhones and most Android devices ship with encryption enabled by default, but you should verify it and pair it with encrypted backups.

• iOS: Settings → Face ID & Passcode — confirm "Data protection is enabled" appears at the bottom.
• Android: Settings → Security → Encryption & credentials.
• Turn on iCloud Backup with Advanced Data Protection (iOS) for end-to-end encryption.
• On Android, enable Google One end-to-end encrypted backup and set a recovery key you actually remember.
• Test a restore at least once a year. A backup you can't restore isn't a backup.

Step 8: Manage Your Digital Wallet and Payment Security

Your phone likely doubles as your wallet. Attackers know this.

1. Require biometric confirmation for every payment, no matter the amount.
2. Set individual transaction limits inside your banking app.
3. Enable instant transaction alerts by push, not SMS.
4. Use virtual card numbers for online purchases where your bank offers them.
5. Remove old, unused cards from Apple Pay, Google Wallet, and browser autofill.

Step 9: Review Connected Accounts and Devices

Your Google, Apple, Microsoft, and Samsung accounts are the master keys to your phone. Compromise one and everything falls.

• Visit myaccount.google.com/security or appleid.apple.com monthly.
• Sign out any device you no longer own or recognize.
• Remove third-party app connections you don't use.
• Review recent security events for unfamiliar sign-ins.
• Add a recovery email and phone number that you actually control long-term.

Step 10: Prepare for Loss or Theft

Even a perfectly configured phone can be stolen. Preparation determines whether that becomes a minor inconvenience or a life-altering disaster.

1. Enable Find My iPhone or Find My Device—confirm it works by locating your phone from another device today.
2. Turn on Stolen Device Protection (iOS 17.3+), which adds a biometric-only, time-delayed lock on sensitive changes.
3. Note your phone's IMEI number (dial *#06#) and store it somewhere safe.
4. Set up a legacy contact in case something happens to you.
5. Practice remote wipe once so you know the process under stress.

Common Mistakes That Lower Your Score

Mistake	Risk	Fix
Sideloading apps from unknown sources	Malware, spyware	Disable "Install unknown apps" system-wide
Rooting or jailbreaking	Bypasses OS sandbox	Restore to stock firmware
Reusing passwords across apps	Credential stuffing	Use a password manager with unique passwords
Ignoring "data breach" warnings	Account takeover	Change flagged passwords immediately
Leaving Bluetooth & AirDrop open	Proximity attacks	Set to "Contacts Only" or off in public
Storing 2FA seeds in cloud notes	Full account compromise	Use an encrypted authenticator app

Advanced Steps for High-Risk Users

Journalists, executives, activists, and anyone handling sensitive data should consider these additional measures:

• Enable Lockdown Mode on iOS or a comparable hardened profile on Android (GrapheneOS on Pixel devices offers the strongest posture).
• Use a dedicated secondary device for banking or sensitive work.
• Turn off 2G fallback to prevent stingray/IMSI-catcher downgrade attacks.
• Cover cameras and disable microphone access globally except when actively needed.
• Rotate your phone number annually if you're a target for SIM swaps.

How Often to Re-Check Your Score

Security isn't set-and-forget. New apps, OS updates, and threats change your posture constantly.

1. Weekly: Install pending updates.
2. Monthly: Run the built-in Security Checkup or Safety Check.
3. Quarterly: Audit app permissions and connected accounts.
4. Annually: Test backups, rotate critical passwords, review 2FA methods.

Frequently Asked Questions

What is a good phone security score?

There's no universal scale, but most tools grade on a 0–100 range or A–F letters. Aim for 85+ or an A/B rating. What matters more than the number is that all core protections—updates, strong lock, 2FA on primary accounts, and audited permissions—are in place.

Does installing an antivirus app improve my phone's security score?

On iOS, no—Apple's sandbox prevents traditional antivirus from working, and "security" apps in the App Store are mostly marketing. On Android, a reputable scanner (Bitdefender, Malwarebytes) can help detect sideloaded threats, but it's no substitute for the fundamentals covered above.

Are free encrypted DNS services safe to use?

Yes, provided you choose established providers like Cloudflare (1.1.1.1), Quad9, or Google's 8.8.8.8. These operate under public no-log policies and are audited. Avoid unknown DNS providers that appear in ads or forum posts—they can log or manipulate your queries.

How can I tell if my phone has already been compromised?

Warning signs include: rapid battery drain, unexplained data usage spikes, unfamiliar apps, unexpected pop-ups, overheating when idle, or 2FA codes arriving for logins you didn't attempt. If you suspect compromise, back up your data, factory reset, and change passwords from a different device.

Is using a URL shortener safe for security?

Reputable shorteners with link previews, malware scanning, and clear ownership are safe and can even improve security by giving you control over redirects. For an in-depth look at what makes a shortener trustworthy, read our honest review of Lunyb or our 2026 Rebrandly review.

Final Thoughts

Improving your phone security score isn't about paranoia—it's about making yourself a harder target than the person next to you. Attackers are opportunistic; strong basics defeat 95% of threats. Work through the ten steps above in a single afternoon, then set calendar reminders for the monthly and quarterly reviews. Your future self, and your bank balance, will thank you.