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TROUBLESHOOTING.............................................................................. 49
General Information
Welcome
Thank you for using ZTE A139+ GSM digital mobile phone.
To guarantee the mobile phone always in its best condition, please read this manual
carefully and keep it for further use.
The pictures, symbols and contents in this manual are just for your reference. They might
not be completely identical with your mobile phone.
Security
To protect your mobile phone from illegal use, take the security measures as
follows:
¾
Set PIN codes of the SIM card.
¾
Set handset lock code.
¾
Set call restrictions.
