Here's how you can easily switch between 3G and 4G networks. Using a 3G network might help save some battery power on your Android phone.

Buyers of Motorola's Xoom tablet who want to move from 3G to 4G when that option is live will need to mail the device to Motorola for a hardware upgrade, according to Verizon.

Do you want to use your 4G LTE network on your smartphone? Here's how to activate 4G and LTE on a wide selection of Android phones.