can cellphone work off just wifi
WiFi phones that use the 802.11b or 802.11g standards transmit at 2.4 GHz. Phones that use the 802.11a standard transmit at 5 GHz. When you make a call on a WiFi phone, you dial the number of the person you want to call, just like you would with a cell phone.If you're calling another VoIP user, you may enter a VoIP address instead of a phone number, depending on the service provider's requirements.rom their user interface to how they work, WiFi phones are a lot like cell phones. Like a basic cell phone, a WiFi phone has a printed circuit board (PCB) that connects: 1  A processor. 2  A speaker and a microphone.
In order to use either of these phones, you need to have an account with that provider, just like you need a service plan from a cell phone provider to use a particular phone. Either you or your service provider will configure the phone to work within the network.Other phones work with a protocol rather than a particular network or provider. For example, ZyXEL and Linksys both make WiFi phones that use Session Initiation Protocol (SIP).rom their user interface to how they work, WiFi phones are a lot like cell phones. Like a basic cell phone, a WiFi phone has a printed circuit board (PCB) that connects: 1  A processor. 2  A speaker and a microphone.