It's easy to disassemble the Samsung. There are some screws on the back of the device. You only need a small phillips screw driver. Peel of the small rubber pads on the top of the mobile phone. There are small screws underneeth. There are 6 screws on the back that holds the case together.
As soon as the screws are removed the device could be opened. There are some plastic noses that could be opened easiely.
I like to connect to the keyboard to be able to control the device remotely. But the connector or the keyboard has got very tiny connectors. No chance to solder here without destoying the device.
I thought it would be best to solder directly on the button pads. Doing that the keyboard will get unusable and the device could never be put into it's initial state.
This is the point of no return!