Wednesday, July 24, 2013

Your Cellphone Might Have An EDL Capacitor Acting As A 2nd Battery

Your Cellphone Might Have An EDL Capacitor Acting As A 2nd Battery
Posted By: EarthGrid
Date: Tuesday, 23-Jul-2013 21:01:30
 
This is one of those "The more you know" moments:
There's this new story about how Even Powering Down A Cell Phone Can't Keep The NSA From Tracking Its Location. And spyware got installed by your phone lying to you about an "important woo-woo update v4.0.2934" and you could care less about what the update does. Well you're going to want to care, sunshine!
Why are you constantly updating a phone that has no direct problems for YOU personally? Back in the old floppy disk days, you could feel free to use MS-DOS 1.0 for the next 600 years for all we care. But phone vendors wave their magic icon and have you "trained" to go swipe/swipe, swoop/swoop to update things. Please stop all that updating.

Cellphones are starting to use what are called EDL supercapacitors. They hold a charge like a battery, and probably have 70000 μF (or 70000 MFD) of capacitance. MFD stands for microfarads.
Gold Electric Double Layer Capacitors

Typically you'll see listings for C-EDLs for sale (CAPACITOR FOR MOBILE PHONE) as in this Zauba.com link.
Now some people noticed the C-EDL on the mainboard in their phone leaked.
Which means, the phone can't keep the right time. And people in forums complained of resistors near the C-EDL getting fried. Like here:
Stampede Design » Stampede Blog » Samsung Galaxy S2 WiFi Issue
System clock resetting to Sat 1 Jan. 2000 at every battery change - Page 3 - xda-developers

So the people with the fried-EDLs said: "Can't we just pop that EDL out of there and have the phone still work"? Now the average Joe/Jane is thinking: ARE YOU NUTS? You're kidding me, right? Get into the board, and void your warranty? You bet your fanny. As it turns out, you can remove the C-EDL and have your cellphone still work. Who cares if the time is right? So maybe you can't play Fruit Ninja correctly.
In other worlds, Blackberry mainboards have a tiny second CMOS battery like desktops do. More daring cellphone DIYers:
Last resort fix for dead bold (no red led) - BlackBerry Forums at CrackBerry.com

When you see photos of cell phone mainboards, look for the C-EDL. It's round and typically has an tiny overhead metal clip. See here:
battery.JPG
53424d1343074042-back-maxx-sorry-sg3-bionic-motherboard-ifixit.jpg

So none of this news is NEW to people who want to stay hidden. See why C-EDLs are NEVER mentioned on TV shows? The "throwaway" concept is mentioned in shows left and right, but NEVER the dirty secret of leaking C-EDLs.
In the future the Eye of Sauron agency will have very limited ability to find the actual people they're after (using cell technology anyway).
http://www.rumormillnews.com/cgi-bin/forum.cgi?read=283070


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