RCA G2 User Manual page 51

The metal face of the SIM card is polluted.
Signals are obstructed. For instance, radio
waves cannot be effectively transmitted nearby
Poor received
a high building or in a basement.
signal quality
Line congestions occur when you use the
mobile phone in high-traffic hours
The phone is not
The battery energy is exhausted.
powered on
Calls cannot be
Call barring is activated
dialed
Photo messages
MMS address is error
cannot be sent
The SIM card is invalid
The mobile phone is not in a service area of the
The mobile phone
GSM network
cannot connect the
network The signal is weak
Account or service is not activated
Clean the SIM card with a clean cloth
Move to a place where signals can be
effectively transmitted
Avoid using the mobile phone in high-traffic
hours
Charge the battery
Cancel call barring
Contact your network service provider and
update the MMS in the APN setting
Contact your network service provider
Move to the network operator's service area
Move to a place where the signal quality is
high
Contact your network operator for further
assistance
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