THOMSON SEREA75BLK Manual De Instrucciones página 89

6. Activate the SOS Function
By simply pressing the SOS button on the back
of the telephone once, you can immediately
notify up to five family member/friends that you
need help. The function works as follows:
- Press and hold the SOS button for two to
three seconds.
- The phone emits a warning tone for several
seconds to alert you that the function has
been activated.
- The phone will then try to call the five
contacts that you have configured by dialing
the corresponding numbers twice. As soon as
one of them answers the call, you will be in
communication with him/her.
- In addition, each of the five contacts will
receive a customizable SMS, informing them
that you are asking for help.
7. Audio Boost feature
This device is equipped with a volume
amplification function: the voice is clear and
more powerful during your calls. The feature is
activated by default. During a call, bring the
volume to the maximum level by pressing one
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