Zte R3000 User Manual page 13

emergency calls
 To make an emergency call your phone must be turned on and in an area
where there's network coverage. Dial the national emergency number (in the
UK: 999) and press 'send'. Explain exactly where you are and don't hang up
until help has arrived.
working temperature

The working temperature for the phone is between 0℃ and 40℃. Please
don't use the phone outside that temperature range as it might cause
problems.
 At very high volume, prolonged listening to a mobile phone can damage your
hearing.
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