Can someone help me with this tool? How to set right voltage?
So i bought this:
And i checked some videos(tuttorials) online. When u want to power up a phone, how can you know the right voltage? I checked some videos and people set 4,8V for Samsung phones. I tried it with two phones S3 and another Samsung and both just showed the logo Samsung on the screen and then power off. In most of the videos the device power up and people use the device.
So what am i doing wrong? How can you know the right voltage for a device?
Is this a good question?