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PSA - Don't buy a metal phone case.


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#1 moeburn

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Posted 06 October 2013 - 16:09

Boy do I feel stupid.  So I got this nice metal case for my new Galaxy S3 at the dollar store, it was only $2 and made of real metal (not metal-coloured plastic crap), and while I know some people might think its fugly as hell, I thought it looked pretty sweet!

 

metal-phone-case.jpg

 

So I put it on.  And then I get very disappointed when I find out that my new Galaxy S3 can't receive wifi in my shed, like my old Atrix could.  Even my netbook can get my wifi in my shed.  And then I bring the phone inside, and discovered it can't even get a wifi signal in the basement of my house!  So I walk around, and the wifi is working, just with a very very weak signal.  I thought "this can't be right, this phone can't be that crappy", and then I remembered an experiment I did a while ago, where I wanted to see what material could block a wifi signal.  I remember that all it took was a thin sheet of tin foil on top of a phone or tablet, and the device couldn't receive wifi at all.

 

I took my new metal case off my phone.  Suddenly the wifi signal increased by 25dB.   :rofl:

 

Apparently this nice metal case was to blame for all my wifi troubles.

 

So could anyone recommend me a good place/online store to get a case for my Galaxy S3 phone for cheap?  We have lots of stores and malls around here that sell them, but usually overpriced.  I am specifically looking for a silicone rubber case so that I can prop/lean my phone up against something and not worry about it sliding down.  I found many cases for my Galaxy S3 around here, but they are all hard plastic, which slides around like crazy.  Thanks!




#2 metallithrax

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Posted 06 October 2013 - 16:12

Boy do I feel stupid.  So I got this nice metal case for my new Galaxy S3 at the dollar store, it was only $2 and made of real metal (not metal-coloured plastic crap), and while I know some people might think its fugly as hell, I thought it looked pretty sweet!

 

 

 

Inflation's a bitch ain't it.



#3 OP moeburn

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Posted 06 October 2013 - 16:13

Inflation's a bitch ain't it.

 

Huh?  I thought that was a pretty good price, seeing as how most of the sites I'm looking at are selling cases for $20-30.



#4 shozilla

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Posted 06 October 2013 - 16:15

you can get metal case from ebay... that are better than dollar store's crap.



#5 OP moeburn

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Posted 06 October 2013 - 16:22

you can get metal case from ebay... that are better than dollar store's crap.

 

I would imagine that ANY metal case would have the same wifi-blocking effect.  This one appears to be brushed steel.  Aluminum has the same effect.  I'm not sure what metals are available that don't have an EMI blocking effect.



#6 shozilla

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Posted 06 October 2013 - 16:24

I would imagine that ANY metal case would have the same wifi-blocking effect.  This one appears to be brushed steel.  Aluminum has the same effect.  I'm not sure what metals are available that don't have an EMI blocking effect.

 

take a look here



#7 metallithrax

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Posted 06 October 2013 - 16:28

Huh?  I thought that was a pretty good price, seeing as how most of the sites I'm looking at are selling cases for $20-30.

It was a funny based on you buying it from the dollar store, and it cost 2 dollars. :D

 

 

Are they not like UK £1 stores, where things are £1, or 2 for £1 etc, but no more than £1



#8 OP moeburn

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Posted 06 October 2013 - 16:31

It was a funny based on you buying it from the dollar store, and it cost 2 dollars. :D

 

 

Are they not like UK £1 stores, where things are £1, or 2 for £1 etc, but no more than £1

 

Oh i see.  Yes the brand name dollar stores around here try to keep prices under $1, but this was a 'mom and pop' non-chain dollar store.  They didn't sell anything that cost more than $10.  But you're right, it shouldn't be called a 'dollar store', it should be called a 'dollars store' or a 'bunch of random crap store'.



#9 pack34

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Posted 06 October 2013 - 16:42

A sealed metal enclosure for any electronics device will act as a Faraday cage. The conductive material attenuates the signal. Smaller metal enclosures are commonly used inside electronic devices to prevent RF interference from affecting noise sensitive components.

 

http://en.wikipedia....ki/Faraday_cage



#10 xendrome

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Posted 06 October 2013 - 16:45

http://www.amazon.co...1?ie=UTF8&psc=1



#11 OP moeburn

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Posted 06 October 2013 - 16:46

A sealed metal enclosure for any electronics device will act as a Faraday cage. The conductive material attenuates the signal. Smaller metal enclosures are commonly used inside electronic devices to prevent RF interference from affecting noise sensitive components.

 

http://en.wikipedia....ki/Faraday_cage

 

Yeah, I know all about faraday cages, I tried building one once.  I was just too dumb to see the connection at the time that I bought and tested the metal phone case.





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