Troubleshooting
20
Troubleshooting
Problems and solutions
Problems
Solutions
The mobile phone
cannot be switched
on.
- No battery inserted.
- Battery is not charged.
No signal quality is
displayed.
- No network connection. The mobile phone is in a location where there is no
network service. Move to a different location or contact your service provider.
Keypad does not
function or only
functions very
slowly.
- The operating speed of the display is reduced in the case of low tempera
tures. This is normal. Use the phone in a warmer location.
A message ap
pears in
the display for
some functions, in
dicating execution/
use is not possible.
- Many functions can only be used after the respective service has been app
lied for. Contact your service provider for more details.
Screen frozen or
no
response when
pressing keys.
- Remove the battery for 3 minutes and try again.
No connection to
the
mobile telecom
munication net
work.
- Contact your service provider.
The “Insert SIM”
message appears
in the display.
- Ensure that the SIM card has been installed correctly. Contact your service
provider, if necessary.
The battery cannot
be charged or is
empty within a
short time.
- Battery is defect.
- Place the phone correctly in the charging unit or connect the charging unit
properly. Clean the contact surfaces on the mobile phone and charging unit
with a soft, dry cloth.
- Charge the mobile for 4 hours.
Tips on the battery
Only use batteries and charging unit approved by the manufacturer, otherwise the battery could be
damaged.
Do not short circuit the battery. Always leave the battery in the phone to avoid accidentally short
circuiting the battery contacts.
Keep the battery contacts clean and free of dirt.
The battery can be charged/discharged hundreds of times but its service life is limited. Replace the
battery when the battery power has decreased noticeably.
Summary of Contents for Viva II
Page 24: ...Declaration of Conformity 24 Declaration of Conformity...
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