Smartphones are indispensable in our daily lives. We use them to stay connected, work remotely, navigate cities, track fitness goals, manage our finances, and capture cherished memories. According to Reviews.org, Americans check their phones 144 times daily and spend over four hours daily on them. But when it’s time to upgrade, most of us assume that a factory reset wipes everything clean. That assumption is not just wrong—it’s risky.

Why We Upgrade—and What Happens Next

As smartphone technology evolves rapidly, most people upgrade regularly. These old phones don’t just vanish—they’re often traded in, sold, or handed down to someone else. Before that happens, we typically perform a factory reset. But here’s the problem: a factory reset doesn’t entirely delete your data.

What Factory Reset Really Does (and Doesn’t Do)

Many users believe a factory reset protects their data. But that’s a misconception. A reset removes the pointers to your data—not the data itself. On the surface, the phone looks fresh and empty. In reality, your personal and corporate information still lives on the device.

In a 2015 study by Blancco Technology Group and Kroll Ontrack, researchers purchased over 120 used phones online. They found that 35% of those phones still contained recoverable data—including texts, emails, photos, and more.

“People think their data’s been destroyed, and really all you’re doing [with a factory reset] is removing the table of contents. The rest of the chapters of the book are sitting there waiting to be discovered.”   — Pat Clawson, CEO, Blancco Technology Group

Security Risks by Operating System

Apple iOS: Strongest Native Protection

Apple uses hardware-based encryption. After a factory reset, the encryption key is deleted, rendering the remaining data unreadable. While not infallible, this makes data recovery extremely difficult.

Android: Ongoing Vulnerabilities

Android devices—especially those powered by Qualcomm—are far more susceptible. That’s because they often store encryption keys in software rather than hardware. Once the key is exposed, data can be accessed. Recent attacks using brute-force tactics have compromised millions of Android phones.

Windows Phone: Easy Targets

A factory reset on a Windows Phone simply removes data pointers. The actual data remains intact and can be recovered with basic tools.

Mobile Data Erasure: The Secure Solution

Proper security comes from using software that meets NIST 800-88 standards for data sanitization. Mobile data erasure doesn’t just hide your data—it overwrites it, making it completely unrecoverable.

Benefits of Mobile Data Erasure:

• Overwrites all data multiple times
• Compliant with HIPAA, GDPR, CCPA, and other data regulations
• Generates proof of erasure through certification
• Can be performed on-site or remotely

Whether you’re an individual protecting personal data or an organization safeguarding proprietary or regulated information, certified mobile data erasure is the only reliable choice.

Securis offers professional mobile data erasure services at our NAID AAA-rated facilities. We’ve tested and vetted the top four software vendors, so you don’t have to guess what’s safe.

Physical Destruction: For When Erasure Isn’t Enough

When dealing with highly sensitive or classified data—like information created by federal agencies—a more aggressive method is required: NIST 800-88 Destroy.

What It Involves:

• Battery removal (to prevent fires)
• Physical shredding or disintegration

Shredding destroys the phone’s components and storage, making data recovery impossible. However, it also prevents the device from being reused or resold. That’s why it’s best reserved for high-risk cases. At Securis, Phones are not just shredded; they are disintegrated into pulp, ensuring nothing remains. Work with a certified R2v3 electronics recycler like Securis to reduce environmental impact.

Final Thoughts 

As smartphones become even more central to our lives, so do the risks of mishandling their data. A factory reset isn’t enough. If you’re serious about protecting sensitive personnel or professional information, don’t cut corners. Choose certified data erasure or physical destruction.

Need Help Disposing of Mobile Devices Securely?
Securis offers compliant, certified, and environmentally responsible smartphone data destruction. Contact us today to schedule a secure pickup or learn more.

Research for this article:

1) Privacy for Sale: A Study on Data Security in Used Mobile Devices & Hard Drives Blancco Technology Group and Kroll Ontrack, October 2015