LG S-Fone SD126 User Manual page 56

When showing symptoms like:
When it echoes while connection is made
with a certain telephone in a certain area.
When the phone is heated.
When the Ringer does not ring, or when
Backlight or LCD blinks only.
Standby duration for battery
gradually becomes shorter.
When usage time of battery becomes
shorter.
Check this!
Called "Echo Phenomenon," it occurs if connection volume is
too high or caused by special properties(semielectronic telephone
exchange) of the machine on the other end.
If connection is made for a significantly long duration, or game
and Internet and others are used for a long time, the phone may
become hot. This has no effect upon the life of the product or
performance.
Ringer Type may be set as "Silent" or "Light". Please select
"Ring".
Because battery wear out, its life gradually becomes shorter. If
its life becomes shorter over half of that at the time of
purchase, you must purchase a new one.
If time for use of battery is short, it may be due to the user
environment, or large volume of calls, or weak signals.
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