Wi-Fi

WiFi Phones

From their user interface to how they work, WiFi phones are a lot like cell phones . Like a basic cell phone, a WiFi (Wireless Fidelity) phone has a printed circuit board(PCB) that connects:

• A processor
• A speaker and a microphone
• A numeric keypad and other function keys
• A lithium ion battery
• A screen, usually aliquid crystal display (LCD)
• An antenna
• Memory

Both types of phones also send and receive signals as radio waves. The difference is that WiFi phones use different frequencies than cellular phones do. Cell phones use 824-MHz to 894-MHz frequency bands. 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.  

Nowadays, the appearance of I-Phone, I-Pad, Android Tabs and Phone are very fastest that make challenging of the phones in the past trend. The phones now is very smart & multi function enabled in this new technologiest.

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