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5.
Do not use acid or alkali to clean YAKOYA HIRO.
6.
Do use the original accessories otherwise the warranty will be failed.
3.
Troubleshooting
Problems
Cause and Solution
Unable to turn on
The battery is used up;
Charge the pad.
SIM card
malfunction
SIM card is damaged;
Contact your network service provider for help.
SIM card is not properly inserted;
Confirm SIM card is properly inserted.
There is a foreign substance on the metal surface of the SIM
card;
Use a clean cloth to wipe off the metal contact point of the SIM
card
Poor reception
Using the pad in an area with poor reception such as near tall
buildings or in a basement where radio waves cannot be
reached;
Try in an open field.
Using the pad when the network is busy, such as during rush
hour, making it impossible to get through;
Try with available network.
Far away from the base station built by the network;
You may request the network service provider for a service area
plan.
Echo or noise
Caused by poor network trunks, it is a regional problem with
poor connection;
Hang up and redial, or renew the trunks.
Unable to call
The call barring being activated;
Deactivate the barring.
The fixed dialing being activated;
Deactivate the fixed call.
Unable to charge
Battery or charger is damaged;
Replace the battery or charger.
Recharging in the environment of less than -10C or higher than
55C;
Try to charge in an appropriate environment.
Poor contact;
Check if the plug is properly connected
