Does an EMF Phone Case Block Radiation When Open?Updated 7 hours ago

EMF phone cases only protect you when used correctly. If the case is open or the shielded side is facing away from your body, the protection is significantly reduced — or even eliminated.

How EMF Phone Cases Work

EMF phone cases, like those made by SafeSleeve or offered at SYB, are designed with shielding material on one side — typically the front flap. This shielded side is engineered to block or deflect radiation away from your body when the phone is carried or used.

The rest of the case — including the back and sides — is typically unshielded to preserve signal strength, camera functionality, and touchscreen use.

What Happens When the Case is Open?

When the case is open and the shielded flap is flipped behind the phone (which many people do while texting, browsing, or making calls), the shielding no longer sits between your phone and your body. In this position:

• Radiation is not being blocked.

• Your exposure can actually increase due to reflected EMF bouncing back toward your body from the unshielded rear.

• The case provides little or no benefit.

In other words, the shielding material only works when it’s positioned directly between you and your phone.

How to Use EMF Cases Properly

To get the protection the case is designed to offer:

• Always keep the shielded side facing your body — whether in your hand, on a call, or in your pocket.

• Don’t flip the front cover around the back when using your phone. Keep it open and flat, like a small book, with the shielded layer between the phone and you.

• Use speakerphone or a wired headset when possible, instead of holding the phone to your head — even with a shielding case.

Summary

An EMF phone case can be an effective tool — but only if used properly. If the case is open and the shielded side isn’t positioned between you and the phone, it won’t reduce your exposure. Be mindful of how you hold and carry your device to make sure you’re getting the protection you expect.