In principle, the Seki Easy Plus can copy or learn the corresponding codes from an infrared remote control. In this sense, this remote control is not automatically compatible with a TV. You would have to take the original remote control from the Samsung TV and "copy" button by button or function by function to the Seki remote control. There are other universal remote controls that are easier to use, as they only require a code from the corresponding TV brand and the most common buttons are already pre-programmed (e.g. One for All).

Yes, the remote control is suitable for the SAMSUNG UE43DU7170UXXN Smart TV, as it is controlled with infrared (IR) and the remote control is capable of learning.

The 'SeKi Easy Plus' is not specifically listed as compatible with Xiaomi televisions. Remote control compatibility is listed for various brands and models, but Xiaomi is not mentioned among them.

No. Unfortunately, no standard libraries can be loaded by manufacturer / model. The remote control must be learnt per command (infrared). A little tedious, but bearable with the few buttons.

Yes, it is compatible.