Once These Few Channels Were In Use By Customers, No Further Customers Could Be Served Until Another User Vacated A Channel. It Would Be Impractical To Give Every Customer.
A display which echoes the user's typing, and displays text messages, contacts, and more. The display is typically either a liquid-crystal display (LCD) or organic light-emitting diode (OLED) display.
A battery, providing the power source for the phone functions. A modern handset typically uses a lithium-ion battery (LIB), whereas older handsets used nickel–metal hydride batteries.
The Critical Advantage That Modern Cellular Networks Have Over Predecessor Systems Is The Concept Of Frequency Reuse Allowing Many Simultaneous Telephone Conversations In A Given Service Area.
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