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Old 04-04-2010, 04:24 PM   #1
pedoublenizzle
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G, R1, and R2 inside back cover

Hey, does anybody know what is behind these thin squares labeled G, R1, and R2 under the battery cover?
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Old 04-05-2010, 09:03 AM   #2
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I have no idea, I was sorta wondering about that myself.
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Old 04-05-2010, 09:32 AM   #3
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Most likely it's Ground, Resistor 1 and Resistor 2.
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Old 04-05-2010, 05:22 PM   #4
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That would make sense!
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Old 04-08-2010, 10:38 PM   #5
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Well I finally got enough guts to see what was inside. Those squares are thin plastic stickers. Under each is an antenna port. I could assume G is for GPS, R1 and R2 are for the cellular Radio?
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Old 04-09-2010, 07:48 AM   #6
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Quote:
Originally Posted by pedoublenizzle View Post
Well I finally got enough guts to see what was inside. Those squares are thin plastic stickers. Under each is an antenna port. I could assume G is for GPS, R1 and R2 are for the cellular Radio?
That makes more sense.
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Old 04-12-2010, 11:10 AM   #7
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Confirmed that G is definitely GPS, Was only getting 1 fix (using the app GPS Status) until i put a wire in the back (2 strands from a lamp cord. One was just to fit in the hole, the other is the new antenna). I got up to 9 sat fixes. Indoors.
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Old 09-28-2010, 12:20 PM   #8
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Just wanted to report my findings as I have been messing around with these.

First of all let me say that I have done my testing with a cross-connect wire.



What I have been using to test:
Speedtest.net (website) through PDAnet (App)
Speedtest (app)

My location:
At work in a cubicle ~15 feet from a window. (During my lunch)



My goal:
To not lose 3g data.


Test 1: Attach make-shift antenna (cross connect wire with Tesla coil pattern on end) and plug it into port labeled G.

Results: Speedtest (app) performs the best on this. Also my observations show that the Speedtest app uses GPS throughout the test.

I theorize that G is for GPS.

Test 2: Plug make-shift antenna into port R1.

Results: Phone signal drops from 2-5 bouncing bars to 0-2 bouncing bars of signal. Drops 3g almost instantly.

Unplug antenna from R1. Lost all signal. Airplane mode on then off gives 1 bar of signal temporarily then loses signal again.

Plug make-shift antenna into R1 and new make-shift antenna into R2 = 3 - 5 bars of signal.

Speedtest app runs great like. Speedtest through PDAnet is not so great.
Dropped 3g after the latency test. Restarting the phone doesn't bring signal back. Very interesting.


I'll test more on tomorrow's lunch. Actually I will try using a twisted pair makeshift antenna. Not sure if antenna signals have cross-talk or not.


Please throw out any tips or suggestions.

Last edited by Nyckxd; 09-28-2010 at 12:29 PM.
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