Haier U50 User Manual - Page 57

Poor sound quality, echo or noise makes communication difficult

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"Enter PIN code" appears on the screen: Enter valid PIN code of your SIM card. Please contact network service operator immediately if you do not know the code. "Enter PUK code" appears on the screen: Your SIM card will be locked if you enter wrong PIN code for three times. To unlock your SIM card, you have to enter PUK code. Please contact network service operator immediately. "Insert SIM card" appears on the screen: Make sure SIM card is correctly installed. Check if SIM card works properly. It may have defects or faults. If so, hand it over to network service operator. "Not in service area. Network failure." is displayed. Check signal intensity indicator. If there is no signal, you may be in the basement or network blind area in a building. Please move to other locations to receive signal. Another situation is that you are not covered by network. You can ask your network service operator to provide network coverage. Poor sound quality, echo or noise makes communication difficult: Hang-up your phone and dial again. Network service operator may connect you to a line with better communication quality. Standby time declines: 51

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“Enter PIN code" appears on the screen:
“Enter PUK code" appears on the screen:
“Insert SIM card" appears on the screen:
“Not in service area. Network failure.” is displayed.
Poor sound quality, echo or noise makes communication difficult:
Standby time declines:
Enter valid PIN code of your SIM card. Please contact network service operator
immediately if you do not know the code.
Your SIM card will be locked if you enter wrong PIN code for three times. To
unlock your SIM card, you have to enter PUK code. Please contact network
service operator immediately.
Make sure SIM card is correctly installed. Check if SIM card works properly. It
may have defects or faults. If so, hand it over to network service operator.
Check signal intensity indicator. If there is no signal, you may be in the
basement or network blind area in a building. Please move to other locations to
receive signal. Another situation is that you are not covered by network. You can
ask your network service operator to provide network coverage.
Hang-up your phone and dial again. Network service operator may connect you
to a line with better communication quality.
51