26 October 2011

This article originally appeared in Issue #14 of The Dot Connector Magazine.

Cell phones: they’re everywhere. From the “Battlephones” of the olden days, technology has progressed inexorably to today’s Smartphone. Crikey, some people even sleep with their cell phones!

Much has been written about the health effects of the gigahertz electromagnetic radiation that emanates from your trusty phone. Whether it’s brain cancer, or interfering with sleep, or mental fog, everyone has heard of some study or another that cell phones are dangerous.

Well, let’s get real: When you hold a microwave-frequency transmitter up against your head, what do you think is going to happen?! Of course, your average cell phone emits signals at power levels that are thousands of times weaker than a microwave oven – and at a different frequency. But still, cell phone emissions are nonetheless microwave radiation, and that can’t be good for you.

To make matters worse, your super-intelligent, handheld-computer “smart phone” just loves to gobble up the juice from its battery. But what if you could minimize your exposure to cell phone radiation and increase your battery life?

If you must use the darn things, you may as well do it correctly, yes?

That’s where an understanding of cell phone antennas comes into play. You see, in the olden days, there was a big honkin’ antenna attached to the phone, and you knew it was an antenna. It was hard to miss.

But in today’s phones, the antennas are generally flat, and integrated into the housing of the phone.

One problem: you hold the phone in your hand. Guess what that means?

Have you ever used a cheap FM radio and touched the antenna, thereby causing a buzzing noise or a weaker signal? Well, the same thing happens with cell phones. When your hand is covering the antenna inside your phone, two things happen:

  1. The signal received from the local cellular tower has to go through your hand, which makes reception worse
  2. The signal being beamed out from your phone also has to go through your hand, which makes the transmitted signal weaker

Now, modern cell phone systems use “intelligent power control technology”. That’s a fancy way of saying that the phone’s radio transmitter regulates itself to maximize battery life and call quality. If your hand is covering the antenna, your phone uses more power to transmit a stronger signal, and your battery is eaten up more quickly.

Obviously, if your phone is sending out a stronger signal, you’re also being irradiated more than you need to be. Oops!

On most modern cell phones, the antenna is integrated into the top of the back of the phone. In that case, hold the phone from the bottom when using it.

Some other phones have the antenna on the bottom of the back side of the phone. And still other phones have 2 antennas! You can look in your phone’s owner’s manual to find out where the antenna is located. If you know where the antenna is, you can make sure you don’t block it, thereby getting more life out of your battery and less EM radiation exposure.

Better yet, use a corded earpiece and microphone. Yes, I know… Those wireless Bluetooth earpieces are ALL the rage… but they also usually operate at 2.4GHz, which is still probably bad for your brain. There’s no point in replacing one microwave transmitter near your head with another one!

Now that you know where your phone’s antenna is located, you can also orient it on your person or when driving your car so that the antenna is facing away from you and out a window. Or, if you’re at the office, don’t place the phone screen-up on your desk – place it screen down. Better yet, position the phone so as to aim the antenna out a window.

And then you can impress all your friends with your newfound technical knowledge!

 

Cell Phones: How to Maximize Battery Life and Minimize Radiation Exposure
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3 thoughts on “Cell Phones: How to Maximize Battery Life and Minimize Radiation Exposure

  • 5 April 2017 at 21:42
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    Wow. I understand you. Thanks for making tech stuff easier. l love you

    Reply
  • 10 October 2017 at 10:49
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    Where is the info on maximizing battery life? Did you forget that is literally in the name of the article and is promised to be in it in the 4th paragraph? Or is how you hold your phone supposed to increase battery life too?

    Reply
    • 10 October 2017 at 11:14
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      Door #2. The phone’s transmit power will be lower, which means battery life will go up. Of course, things like the screen in a modern phone use way more power usually than the transmitter, but still…

      Reply

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