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9
Introduction
Noise
Radio interference from electronic appliances and equipment, as well as from
other phones will affect the quality of wireless data transmission.
Cell handover
As the phone user moves from one network cell to another, the signal strength of
the channel drops and the wireless telephone exchange may handover the user to
a different cell and frequency, where the signal is stronger. A cell handover may
also occur when the user is stationary, due to varying wireless traffic loads. Such
handovers may cause slight delays in the transmission.
Electrostatic discharge
A discharge of static electricity from a finger or a conductor may cause erroneous
functions in electronic devices. The discharge may result in distorted display and
unstable software operation. Wireless connections may become unreliable, data
may become corrupted, and the transmission halted. In this case you need to end
the existing call (if any), close the cover and switch off the phone (if on) and
remove the battery. Then replace the battery and establish a new wireless
connection.
Dead spots and dropouts
Dead spots are areas where radio signals cannot be received. Dropouts occur when
the phone user passes through an area where the radio signal is blocked or reduced
by geographical features or large structures.