You can watch clarifying videos about the various touch gestures in Wikipedia. The touch screen is the primary interaction method with devices and there are several types of gestures that can be used. Sound volume can also be changed from the Settings menu. ![]() On tablets or when in an application that plays sounds on phones, it controls the media volume, which includes the sounds played by GraphoLearn. On phones it controls the ringer volume by default. The volume button is used to control the volume on the device. If you have any other problems with a device, first try shutting it down and turning it back on and see if the problem persists. If you can’t turn a device on, first try charging it for at least 10 minutes in case the battery has run out. NOTE:If a device seems frozen for a long time and does not respond to touch gestures, you can shutdown/restart a device by holding the power button down for 10 seconds. The Samsung tablets use a wide, flat 30-pin USB cable and the A13-MID tablets have a separate power cord. Tablets often have different kinds of cables. The devices can also be charged from a USB port on a computer. Sometimes the USB cable can be detached from the charger to use it as a regular USB cable. Phones usually use a regular Micro USB cable as both the charger cable and the connection cable. Included with any Android device should be a charger for the device. When referring to PC computers, the instructions assume a Windows operating system. Where applicable, instructions are made specifically for Samsung Galaxy Mini phones, Samsung Galaxy Tab 2 tablets and the A13-MID tablets, since all of these are used with the GraphoLearn research projects. These instructions are mostly general to Android devices, though there are variations depending on the version of Android used on the device and possible customizations done by the manufacturer. ![]() ![]() There are lots of different Android devices on the market, ranging from from small screen phones to 10 inch tablets. Google account and Play Store Android devices
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