Tablets

A slot for a standard memory card (usually a micro-SD) to expand storage or transfer files.

An outward-facing camera for shooting photos or video recordings.

An inward-facing camera for video chat or selfies.

Can receive satellite data for precise navigation.

A capacitive touchscreen requires less pressure and is more precise than the resistive type, but cannot sense gloved fingers.

Storage for the operating system, downloaded apps and user content.

The underlying program that runs the user interface and applications. Version is the installed OS at time of testing.

The longest edge of the tablet measured in inches.

The medium-sized edge of the tablet measured in inches.

The shortest edge of the tablet measured in inches.

The pixel dimensions of the screen, length by width. Combined with the screen size, this determines the pixel density, which is the true measure of the ability to display image detail.

A measure of observable detail on the screen. Pixel density of about 300 pixels per inch or higher eliminates any detail loss due to screen resolution limitations if viewed about 10 inches away.

Can use a cellular carrier's data plan to connect to the Internet.

Megapixel resolution of the outward-facing camera.

Largest height available to the outward-facing camera for recording video. 720 and above can display in HD; values below display in SD.

Megapixel resolution of the user-facing webcam.

Largest height available to the user-facing webcam for recording video. 720 and above can display in HD; values below display in SD.

The type of built-in 802.11 wireless networking supported. Tablets with 802.11n also support 802.11g routers. Some models with 802.11n also support the 5GHz "high band," a standard suitable for apartments and other crowded areas.

Highest level cellular network the tablet can connect to using a carrier's data plan.