A number of factors to consider when purchasing Android tablet computers include, size, OS, storage, and connectivity. Here is a look at these and other factors to help you buy the right Wi-Fi or 3G tablet PC.

Size
Android tablet computers range from 7 inch to 10 inch slate PCs. 7 inch tablet PCs are more portable and ideal for children and students because you can easily carry them in your backpack together with your schoolbooks. The 7 inch screen makes the devices better for reading ebooks than 10 inch tablets PCs because you can hold the device with one hand without wrist-fatigue.

10 inch tablet PCs are ideal for reading comic books, newspapers, magazines, blogs, watching movies and playing games. However, their larger size and reliably heavier weight makes them less portable than the 7 inch tablet PCs.

Operating System
If you would like to be using your slate PC to view flash websites, the ideal Wi-Fi or 3G tablet is one that runs Android operating system. The other touch tablet PCs are those that run Windows, Blackberry OS or Apple iOS. Apple tablets do not have Flash Player support, but offer a more extensive app store than Android tablet computers.

Storage
Most Android tablet computers come with 8Gb to 16Gb internal storage that can hold roughly 12,000 books. If you would like additional storage, you can use an external storage device such as a USB flash drive or a microSD memory card to store your content.

It would be there before a good idea to check that the touch tablet PC you purchase has support for these external storage devices before buying. Another way to store your content is by using cloud storage. Cloud storage enables you to store the content that you are not immediately using online and re-download it whenever you require it.

Connectivity
If you would like ubiquitous data connection, you can invest in a slate PC that has 4G or 3G mobile broadband. Although Android tablet computers that have 4G or 3G are more expensive than those that only have Wi-Fi. They enable you to get coverage while you travel anywhere around the world.

A Wi-Fi only model will require you to be near a Wi-Fi hotspot to get connected. With companies like AT & T continuously growing their Wi-Fi hotspots network. It is becoming increasingly easy to get seamless data connection using Wi-Fi technology.

It is also important that when choosing Android tablet computers you go for a device that supports short-range wireless interconnection. A slate PC with Bluetooth or EDR technology will enable you to remotely connect your Wi-Fi or 3G tablet PC to your mobile phone, notebook and any other device that supports these technologies.