Here is our story: we were searching what does lock sound do because for the past few weeks, sound stopped working in my son's games--just games, like Asphalt 8, Minecraft, etc., but not other apps--I can still play the podcasts without any problem. I checked all the Sound settings and couldn't figure out why.
When was the first touchscreen phone invented? The first touchscreen phone was launched in 1992 by IBM.The IBM Simon is also referred as the first smartphone.Simon is the first smartphone to be incorporated with the features of a PDA.
Using the touch screen. The touch screen on certain tablet PCs allows you to make selections or activate items on the screen using a pointed object, such as the pen or your fingernail. Not all tablets are equipped with a touch screen. See the documentation that came with the product for details.