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12.21 What are the differences between GPS and base
station positioning?
For GPS, the phone sends its location information to the positioning background through the
self-attached GPS module, and the positioning background performs positioning. For base
station positioning, the base station of the telecommunications carrier determines the phone's
location by calculating the distance between the base station and the phone.
GPS uses a satellite for positioning, which consumes more power but is more accurate. GPS
doesn't work well indoors while base station positioning is less accurate, but does work
indoors.
12.22 Does automatic time synchronization consume data
traffic?
If your phone obtains the date and time from your carrier's network when it powers on and
registers with the network, it doesn't use an Internet connection to synchronize the date and
time, and no data traffic is generated.
If your phone fails to obtain the date and time from your carrier's network when it powers on,
and you have enabled the automatic time update function, your phone synchronizes the date
and time with the network, which does generate minor data traffic.
12.23 Why do I get an electric shock when I use the
headset?
In areas or seasons with low humidity, an electric charge is generated when there is friction
between clothing and headsets. It accumulates, resulting in static electricity. When you put on
the headset, the metal contacts your hair and skin, giving you an electric chock. This is normal,
not dangerous and is neither a quality or safety defect.
12.24 What can I do if my phone receives no signal?
The SIM/UIM card can't be detected.
Refer to the attached Quick Guide and check whether the SIM/UIM card is inserted
correctly.
Check whether your phone can identify the inserted SIM/UIM card. Phones of different
standards support different types of cards. Consult the phone provider to check what type
of card your phone supports.
Check whether the SIM/UIM card is valid by inserting it into another phone.
There is no Internet signal available.
This is probably because of poor signal strength. Wait for a moment or use your phone in
an area where the signal is stronger.
Airplane mode is enabled.
April 2015
118
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