Dell Lightning User Manual

94 Troubleshooting
You cannot make
outgoing calls
The SIM card is not installed. Install a valid SIM card in
your phone.
Poor signal. Move to an open space, or if
you are inside a building,
move closer to a window.
Your phone is in airplane
mode with no wireless
connectivity.
1 Touch Start → Menu
.
2 To u c h Settings.
3 Under system, touch
airplane mode.
4 Touch or drag the toggle
switch to turn off the
airplane mode.
You cannot answer
incoming calls
Poor signal. Move to an open space, or if
you are inside a building,
move closer to a window.
Your phone is in airplane
mode with no wireless
connectivity.
1 Touch Start → Menu
.
2 To u c h Settings.
3 Under system, touch
airplane mode.
4 Touch or drag the toggle
switch to turn off the
airplane mode.
Unable to add contacts
to the phone
Memory for storing
contacts is already full.
Delete unnecessary contact
information from the
phone.
Echo or noise
Poor network trunk quality
on the part of your service
provider, or poor local
telephone line quality.
Hang up and dial again. You
may be switched to a
better-quality network trunk
or phone line.
Noises during a call
You may be near a strong
electromagnetic source
(such as a TV, a microwave
oven, etc.) during a call.
Move to another location to
reduce the interference
effects.
Problem Possible causes Possible solutions

Dell Lightning Specifications

General

Brand	Dell
Model	Lightning
Category	Cell Phone
Language	English