Haier M300, User Manual, Page: 38 / 76

37
Common problems Check item
Cannot charge
Please check if the charger is properly connected to the phone
and the power source jack.
Cannot power on
Please check if the battery level is too low;
Please check if the battery is properly loaded;
Please press power key for enough time.
Insert the SIM card but
cannot read the information
in the SIM card
Please check if the SIM card is properly inserted;
Please check if your SIM card is valid.
Cannot make phone call
Please check if the phone number is valid.
Please check if you are in service area.
Poor voice quality
Please check if the phone signal is strong enough.
If you are in a building, please move near the window.
The contact cannot get
your voice during the
phone call
Please check if your mike is blocked by fi ttings or other blocks.