Nokia 9290 User's Guide download pdf (Page 62)

Getting started

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.

Signal impairment

Distance and obstacles can cause signals to become out-of-phase. They can also

cause reflected signals. Both situations result in a loss of signal strength.

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Nokia 9290 User's Guide Page 62