Samsung Ends Software Support for Galaxy S21 Series

Galaxy S21 Series Reaches End of Life

Samsung has officially removed the Galaxy S21 series from its software update roadmap as part of the February 2026 patch schedule, marking the end of support for the 2021 flagship lineup.

What This Means

Affected Devices

Support Timeline Completed

The Galaxy S21 series received:

• 4 years of OS updates (Android 11 → Android 15)
• 5 years of security patches
• Regular monthly security updates until January 2026

Security Implications

Risks of Running Unsupported Devices

Without security updates, Galaxy S21 devices face:

┌─────────────────────────────────────┐
│     Unsupported Device Risks        │
├─────────────────────────────────────┤
│ ⚠ Unpatched vulnerabilities        │
│ ⚠ No protection against new CVEs   │
│ ⚠ Banking apps may stop working    │
│ ⚠ Enterprise MDM compliance issues │
│ ⚠ Potential data breach exposure   │
└─────────────────────────────────────┘

Recommendations for S21 Owners

1. Consider upgrading to a supported device
2. Increase security awareness - Be cautious with downloads
3. Use additional protection - Consider mobile security apps
4. Backup regularly - Prepare for potential issues
5. Monitor app compatibility - Some apps may stop working

Galaxy S22 Moves to Quarterly Updates

As part of the same announcement, Samsung confirmed that the Galaxy S22 series will now receive updates on a quarterly basis rather than monthly.

Samsung's Update Policy Evolution

Current Commitment (2024+ Flagships)

Samsung now offers for flagship devices:

• 7 years of OS updates
• 7 years of security patches

Historical Comparison

Alternative Options

For Users Needing Extended Support

If you must continue using an S21:

## Security Hardening Checklist
 
- [ ] Enable Google Play Protect
- [ ] Use a reputable mobile security app
- [ ] Avoid sideloading APKs
- [ ] Use strong, unique passwords
- [ ] Enable 2FA on all accounts
- [ ] Be cautious with public Wi-Fi
- [ ] Review app permissions regularly
- [ ] Consider using a VPN

Upgrade Recommendations

Enterprise Considerations

MDM and Compliance

Organizations using Galaxy S21 devices should:

1. Audit device inventory - Identify all S21 devices
2. Plan replacement timeline - Budget for upgrades
3. Update security policies - Address unsupported devices
4. Consider BYOD implications - Personal devices in corporate use

Knox Platform Impact

Samsung Knox features will continue to function, but:

• No new security patches
• Potential vulnerability exposure
• May affect compliance certifications

What's Next for Samsung

February 2026 Update Highlights

Samsung's February patch includes:

• Security fixes for Galaxy S22-S25 series
• One UI improvements
• Bug fixes and performance enhancements
• New features for supported devices

Upcoming Devices

• Galaxy S25 series - Available now
• Galaxy Z Fold 7 - Expected August 2026
• Galaxy A56 - Expected March 2026

Related Articles

• Mobile Device Security Best Practices
• Enterprise Mobile Device Management