[A7 General] TheZedo:
OK, getting this thread back on course now, hehe...

Teardown and testing complete...and I have some definitive answers for some of the questions asked here.

netstat_EVO hit the nail on the head without even cracking his open. The Blue wire does, in fact, belong to a GSM relic. The A7 has a fairly standard dual band internal PCB antenna. Similar to THIS ONE. I couldnt get to the antenna part number without desoldering the groundplane/rf-shielding, so I dont know positivily which lead is for what frequency, but the length of the antenna element was shorter on the white lead, so most likely thats the WiFi antenna. Both the White and blue lead are soldered to their respective frequency jacks on the antenna assembly. When you are holding the A7 vertically in front of you, in landscape mode, the Antenna is fixed to the extreme right edge and runs nearly the entire length of the edge. The reason the blue wire is longer is because its leading to an area where there could be a daughter board attached.

Theoretically, the extra length of the wire shouldnt make a difference, and theoretically, switching to the GSM lead should give you less gain for the 2.4 GHz band....however, carefully made TV antennas have been improved with aluminum foil, or even the touch of a hand, so whose to say you might not get better performance with the blue wire...or maybe they even hooked them up backwards at the factory...stranger things have happened.

I had previously noted a loss of signal strength when holding the A7 on the right side, now we know why, thats where the antenna is. The A7 is DEFINATELLY a left hand or bottom hand hold for best wireless performance.

I tested with the free Network Info II application, from a far location, from 4 different angles, and with & without holding the A7, and of course with the blue and white wires.

With the WHITE lead, and the back or right side of the A7 facing the router, I got about -54dBm, and with the front or the left side facing the router, I got about -58dBm. So for the most part, it is gets a decent signal from almost any angle, with a slight tendency to favor the right or back side.

With the BLUE lead, and the front or right side of the A7 facing the router, I got about -45dBm, and with the back or the left side facing the router, I got about -62dBm. So now the A7 has become a lot more directional, with a big tendency to favor the right or front side.

Note: I did some quick tests at close range that showed the same tendencies, so I'm leaving it out.

So now you have a choice...if you prefer a more well rounded wireless behavior with decent signal from any angle, then I would stick with the white lead. If you have the real need to maximize your signal, and you can adjust yourself so the A7 is pointing in the direction of the wireless source, then you could choose the blue wire.

Keep in mind, all units may not have the exact same tendencies, but I would guess they will be fairly similar.

Good luck, and be very very carfull with that tiny antenna connector, if you bend it when re-connecting it, you wont be using that one. Hopefully this will save a few people from attempting the switch, that dont feel comfortable to take the risk of damage.

EDIT: I'm not sure if all units will exhibit the same threshold(some may even be worse), but I noticed the link speed tended to drop off when the signal strength got higher than -60dBm. So with the white lead, it usually stayed connected at 54MBS, but when I switched to blue I routinely saw the link speed drop off considerably, until I pointed it in the right direction. Just something else to consider.