Basic Troubleshooting - Rokit iO 3D User Manual

Basic Troubleshooting

If you find exceptions when operating the mobile phone, restore the factory settings and then refer to the following table to solve the problem. If the problem persists,
contact the distributor or service provider.
Issue
No Internet APN settings are not set up.
The SIM card is damaged.
SIM card error
The SIM card is not in position.
The metal face of the SIM card is polluted.
Signals are obstructed. For instance, radio
waves cannot be effectively transmitted
Poor received signal nearby a high building or in a basement.
quality
Line congestions occur when you use the
mobile phone in high-traffic hours
The mobile phone
cannot be powered The battery energy is exhausted.
on
Calls cannot be
dialed
Cause
Call barring is activated
Solution
Ensure APN settings are correct or add new APN settings by entering or
confirming the information provided by your GSM carrier
Contact your network service provider
Check the SIM card
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
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iO 3D User Manual