Short answer: If the smartphone case's shielding material does not completely enclose the phone, the wireless frequencies can still be measured coming in and out of the phone. This means it does not shield you. The only cases that can shield you from these frequencies are faraday cases.
Once I hit the tipping point of EMF overexposure in 2019, I had to keep my smartphone on airplane mode, turn off wi-fi and turn of Bluetooth. I could feel the frequencies immediately if I turned the phone on. At my worst moment I could feel my friend's cell phone 20+ feet away. How did I know it was the phone? I could recognize a specific sensation in my brain so I'd ask him if the cell phone had been on. Sure enough, it had been. This is not a talent anyone wants!
Needless to say, I don't need science to tell me that smartphones are not exactly healthy. At the time I became overly sensitive, my phone was in a "shielded" case from Safesleeve. It was the type that covered almost the entire phone with shielded material, but didn't cover certain areas of the phone so that the cell signal would allow for its use. When I became sensitive I realized that this type of case did not shield the phone enough for me. When I turned the phone on occasionally, it didn't feel like it was shielded at all!
On Safesleeve's website, they show a before and after video of how their case works with EMF meter readings. (The meter they are using is a newbie meter, btw.) First they measure the radio-frequency with the case open and then with the case closed. It's great to see that when the case is closed it does block signal. The issue with the video that most will not figure out is that it is selective and they aren't measuring the signal coming out of the parts of the phone that are not shielded. They need to stand back and make a call with the phone and see what happens to the meter. Most likely it will do what it did for a Building Biologist who visited my home...
When a Building Biologist visited my home, I asked him about my smartphone case. "Let's measure it!" he said. So he measured it with his professional level RF (radio-frequency) meter and the case didn't shield well when the phone was turned on and much less when a call was made to it, even with the cover over the front. This was exactly what my body already knew. He advised me that the only cases that work are faraday cases. Yes, my body agrees!
In a nutshell, if a cell phone is not completely covered with some sort of shielded material, like a faraday case, it isn't really shielding. A faraday case is great because radio-frequency can't move in or out of the case, but this means you can't use your phone! In my opinion, the only safe smartphone is one that is turned off, lol. The safest phone to use is a landline (not a cordless phone) or a phone used through your computer with a wired headset. (See my post: Wired Phones Are Sexier Than Brain Tumors.)
The modern day problem for newbie wireless aware folks, is that people want to use their smartphone and be shielded from the wireless frequencies at the same time. There isn't a way to have your cake and eat it too. A shielded case may or may not reduce the amount of wireless hitting your body. If it does reduce it to some degree, is it enough? Hard to know.
Radio-frequency is not linear. In other words, blocking the front of the phone doesn't mean your body is shielded from the wireless frequencies. What about the top of the phone or other areas of the phone?
A medical intuitive once told me - and this seems to be the closest to the truth in my opinion - to think of wireless frequencies as being similar to water. Let's pretend for a moment that a cell phone works off of water instead of wireless frequencies. As your phone emits water as the signal and the cell tower sends water to your phone as the signal, you won't be able to escape from getting wet simply because you have a plastic cover over the front and back of the phone. The only way to prevent from getting wet would be to surround your phone with a Ziploc plastic bag which prevents the phone from sending and receiving said water signal. Therefore the equivalent of a Ziploc bag for EMF protection is a faraday cage - where there is no way for the signal to get in or to escape.
When people first wake up to the realities of wireless, one of the first things many do is buy a shielded case. Without knowing, they have entered an elementary understanding of how radio-frequency works and need to dig deeper for the truth. Meanwhile companies are making "shielded" products that give a false sense of security to fill the need of those who don't understand these frequencies.
After finding out how I was duped using this so called shielded cell phone case, I was super disappointed in said company. I don't know how people sleep at night who promote products that don't live up to what they are supposed to deliver. So many people are being fooled into thinking they work. Be careful of slick marketing. *Sigh*
Below are a couple of resources for faraday phone cases that will entirely block the signal to and from your smartphone. Remember, you won't be able to use the phone while it's in the case.
When I'm out and about and have to use my phone, I take it off of airplane mode and let it connect while partially inside the case so it can receive the signal. Once I'm done using the phone, I put it back on airplane mode and keep it inside the case. Since I'm more sensitive than most, I use it in this way since I don't want to be accidentally exposed if I forgot I didn't turn the phone off.
Note: I'm not an affiliate of either company. Affiliate programs seem to create a spell over people making them unable to discern fact from fiction. There are many blogs out there about living healthier with EMFs that are peddling questionable cases to their uneducated readers.
Use a faraday case to shine!
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