There are several different types of smart watches, and the process for opening the back will depend on the specific model you have
Here are a few general steps that may help you open the back of your smart watch:
Locate the seams or latches that hold the back of the watch in place. These may be located along the edges of the watch, or they may be hidden under a removable panel.
Gently insert a small tool, such as a Flathead screwdriver or a plastic opening tool, into the seam or latch.
Gently pry the back open, using a rocking motion to loosen the latch or seam. Avoid using too much force, as this may damage the watch.
If the back is held in place by screws, use a screwdriver to remove the screws and then gently lift the back off the watch.
If you are unable to open the back of your smart watch using these steps, you may need to refer to the manufacturer’s instructions or seek assistance from a professional watch repair service.