User's Manual

User Manual Page 62 of 66
6 Troubleshooting
Thank you for using the 2.0 Duo SIM mobile phone by General Mobile. In case of any problem regarding
mobile phone usage, please contact our local distributor or any of our General Mobile authorized service
centers/partners in your locality.
To inquire about the list of authorized service centers or partners, please contact General Mobile, or visit us
at http://www.generalmobile.com
Common problems Potential causes Solution
Screen displays “Insert SIM” or
“Invalid SIM”
Dirty contact pad of SIM card
with the phone
Gently clean the contact pad of
SIM card.
Short battery life
Backlight setting is set on High
for a long period of time
Re-configure backlight mode to
Medium or Low.
No sound on headset
Possibly minimum volume is set
Adjust the volume by up/down
volume keys
Vibrating without ringtone
during an incoming call
Meeting mode might be set
Re-configure Phone profile to
Normal mode.
Fail to access WAP network
Incorrect WAP settings
Reset WAP Connection setting
in Phone settings, or contact
network service provider.
Phone lock
Function of phone lock is
activated
Input correct phone code; Go to
Settings->Security to turn off if
necessary.
Input PIN code
PIN checkout is activated
Input correct PIN code; Go to
Settings->Security to deactivate
if necessary.
Input PUK code
Input incorrect PIN code three
times
Input PUK code provided by
operator.
Fail to make a call after input
number
1. Didn’t press Send key
2. No signal
3. Outgoing calls barring
maybe on
1. Press W-Send or G-Send
key
2. Go near the windows or
corridors.
3. Go to
Settings->Calls->Voice/Vide
o call barring to check