There are a few ways to approach this, and all of the methods have pros and cons.
The method Google has planned for us is with its native Google TV operating system — a type of Android OS — designed specifically for the big screen.
Negatives: At a hundred dollars and up, the boxes are expensive; and if you’re used to copious numbers of phone and tablet apps, you may be disappointed. There’s a limited number of apps.
Alternatives include hooking your smartphone to a TV with an optionally purchased mini-HDMI cable. You’ll get your smartphone apps all right, but you may run into resolution issues.
Smartphones and smartphone apps often don’t output the kind of resolution needed, and the screen can appear pixilated.
Tablets and Mini-Computers
Use the same mini-HDMI cable — or in rare cases, a full-sized HDMI cable — to connect a tablet to your television.
Or purchase a dedicated mini-computer that runs Android.
I’ve been using a US$50 HDMI IPTV player stick I imported from China through Amazon. The device has a small, low-power 1 GHz Cortex A5 ARM processor, and the whole shebang runs Android 4.0, aka Ice Cream Sandwich.
RAMcomes in at 512 MB, which is problematic because it’s not enough. However, the beauty of the system is it’s cheap; it’s dedicated, so you don’t have to swap cables all the time, and it runs your garden-variety Android phone and tablet apps — just like on your phone or tablet. Just add a mouse to the built-in USB port for navigation.
Here’s how to approach the project:
Step 1: Pixels
Determine what you have to work with. Most current televisions display HD in either 1280 x 720 pixels, or 1920 x 1080 pixels.
Although the Android source will scale to fit the screen, apps that are designed for tablets, which also use high resolutions will render best. Toshiba’s Thrive tablet, for example, features a TV-close 1280 x 800 pixel screen.
Some phones simply mirror the phone screen when outputting to the HDMI cable; this can cause rendering problems if the phone’s screen isn’t HD or the phone isn’t outputting HD.
Some apps are available in a phone version and also a tablet version — sometimes called “HD.” In those cases, use the tablet version.
Google TV-specific apps are designed for TVs.
Step 2: Cables
Inspect the hardware to check the ports available. TVs use full-sized HDMI ports. Phones and some tablets use mini-HDMI ports. Some tablets use full-sized HDMI ports.
Mini-HDMI to HDMI cables are available, as are HDMI to HDMI cables.
Mini-computers like the CX-01 have built-in male HDMI plugs that just insert into the TV’s standard full-sized HDMI port.
Step 3: Operation
Connect the Android device to the TV. Then choose “Mirror Phone on Display” or similar if you are prompted.
Some devices will perform the mirror without a dialog box requesting your input.
Then give the TV a few seconds to recognize the input.
Tip: The CX-01 ships with default Chinese characters. Unless you read Pīnyīn, you will need to set the language before doing anything. Because I don’t read it, I used an existing Android device as a map, following the Settings screen conventions.
Step 4: Viewing
Verify what works. Some apps work and look good, and some don’t. It’s the nature of the beast.
The Slingbox app designed for tablets freezes periodically on the CX-01, probably due to RAM issues. YouTube works well across devices.