Saturday, 6-February-2016
Samsung GT-S7580 signal FIX
EN
Here, the case was constant loosing signal Samsung GT-S7580:
Fast internet check bring that help:
- full ROM reflash (didn`t do the job)
- or get to the hardware and hacking by that diagram:
So, I decide to test one idea of mine - just plug small wire into the antenna extending port - and ha! Signal come home.
Next -> let`s torn that cell apart.
Here you can see that the actually DUAL SIM and SINGLE sim models, share same(!?) hardware.
Perhaps only ROM update and you can get it to be 2 SIM phone. ONLY GUESS, didn`t try!!
Here is the area of interest:
Soldering …
- Why so horrible like that?
- Well, first I solder it only to the small pin on the mainboard(right side) but still was keeping loosing the signal. After that small “crashing” the black plastic inside the extending plug and straight solder there the other end and it work:
Then you need to cut the metal contact in middle:
And then put all back together:
At least for now phone work 
