EN © mPTech 2021. All rights reserved. Maestro 2
21
Troubleshooting
Make sure that the SIM card is installed correctly.
If the SIM card is secured with the PIN code you
have to enter the PIN when turning the phone on
and press <OK>.
In areas with a weak signal, it may not be possible
to make calls. You may also not be able to receive
calls. Move to another location and try again.
Poor sound
quality during
conversation
Make sure that the speaker and microphone are
not covered.
The phone has to be on and within GSM network
reach.
I cannot hear
the caller./
The caller
cannot hear
me
The mic. should be close to mouth.
Check if the built-in mic. is not covered.
When a headset is un use, check if it has been
connected correctly.
Check if the built-in speaker isn’t covered.
The
connection
cannot be
established
Check if the typed-in phone number is correct.
Check if the phone number entered to the
[Contacts] is correct.
Enter the correct phone number if necessary.
Device maintenance
Follow the instructions below.
• For cleaning use only a dry cloth. Never use any agent with
a high concentration of acids or alkalis.
• Use the original accessories only. Violation of this rule may
result in an invalidation of the warranty.
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