Can I replace the router I'm renting from the cable company with one of these routers?

Yes, you can replace your router with a new one that you own, rather than renting one from the cable company. You will need to check the specifications of the router that you are using and ensure that the one you purchase matches or exceeds its capabilities.

Will a wireless router support all of the devices on my home network?

Depending on the size of your home network and the number of devices connected, you will need to consider routers of different sizes. Some can accommodate only up to 4 devices for Wi-Fi connection, while others support many more.

Will the router support my mobile devices?

Yes, your router will support your mobile devices with Wi-Fi connectivity.