Huawei H 210 C Manual

17 
1.
  S
elect  Menu  >  Settings  >  Security  >  Master Reset.  
2 .
  Read the warning and select Ye s
. 
3 .
  Enter your ph
one lock code . The phone will resets the settings, 
and then restarts.   
 
You can see the section "Phone Lock" to find the default phone lock code, 
and how to change it. If  you reset your phone to its factory settings, the 
phone lock code will be res tore to  the defau lt one.  
11 TTY Operation  
The Teletypewriter (TTY) is a typewriting device that is used to...

18 
2.
  Make or answer
 a call.  
3 .
  When the call is set up, use the TTY device to send or receive 
messages.
 
4 .
  Press 
 
to end the call.  
12 Troubleshooting  
If you encounter any problem when using your phone, try to 
rectify the problem according to the following table. If the 
problem persists, contact the service provider or the dealer.  
Problem Ensure that... 
The battery 
cannot be 
charged.  The charger is properly connected to your 
phone and the power socket.
 
The phone cannot 
be...

19 
Problem Ensure that... 
During a call, the 
other side cannot 
hear your voice.  
 The microphone is not covered.  

 If you use a wired headset, make sure 
connector is fully plugged in.  
The signal 
strength is not 
strong enough or 
your phone is 
often off line.  Move close to a place with strong signal 
strength.
 
Your phone 
displays "No 
service found", 
"Service 
unavailable" or 
"Network 
problem".  
 You are in an area with very weak signal 
or outside your...

20 
13 Safety information  
This section contains important information about the operation 
of your device. It also contains information about how to use the 
device safely. Read this information carefully before using your 
device. 
Electronic device  
Do not use your device if using the device is prohibited. Do not 
use the device if doing so causes danger or interference with other 
electronic devices. 
Interference with medical equipment  
 Follow rules and regulations set forth by hospitals and...

21 
Areas with flammables and explosives  
 Do not use the device where flammables or explosives are 
stored (in a gas station, oil depot, or chemical plant, for 
example). Using your device in these environments increases 
the risk of explosion or fire. In addition, follow the instructions 
indicated in text or symbols.  

 Do not store or transport the device in containers with 
flammable liquids, gases, or explosives.  
Traffic security 
 Observe local laws and regulations while using the device....

22 
circuit malfunctions. 

 Do not use your device during thunderstorms to protect your 
device against any danger caused by lightning.   

 Ideal operating temperatures are 0°C to 35°C. Ideal storage 
temperatures are  –20°C to + 70°C. Extreme heat or cold may 
damage your device or accessories.  

 Do not expose your device to direct sunlight (such as on a car 
dashboard) for prolonged periods.   

 To protect your device or accessories from fire or electrical 
shock hazards, avoid rain and...

23 
Child's safety 
 Comply with all precautions with regard to child's safety. 
Letting children play with the device or its accessories may be 
dangerous. The device includes detachable parts that may 
present a choking hazard. Keep away from children.  

 The device and its accessories are not intended for use by 
children. Children should only use the device with adult 
supervision.   
Accessories 
 Using an unapproved or incompatible power adapter, charger 
or battery may cause fire,...

24 
so may lead to short circuits, malfunctions, or electric shocks. 

 If your charger has been exposed to water,  other liquids, or 
excessive moisture, take it to an authorized service center for 
inspection.  

 Ensure that the charger meets the requirements of Clause 2.5 
in IEC60950 -1/EN60950- 1 and has been tested and approved 
according to national or local standards.  

 Connect the device only to products with the USB -IF logo or 
with USB -IF compliance program completion.  
Battery safety...

25 
batteries may also explode. 

 Dispose of used batteries in accordance with local regulations. 
Improper battery use may lead t o fire, explosion, or other 
hazards. 
  Do not allow children or pets to bite or suck the battery. Doing 
so may result in damage or explosion.  

 Do not smash or pierce the battery, or expose it to high 
external pressure. Doing so may lead to a short circuit or 
overheating.   

 Do not drop the device or battery. If the device or battery is 
dropped, especially on a...

26 
 Do not expose your device or accessories to extreme heat or 
cold. These environments may interfere with proper function 
and may lead to fire or explosion.   

 Avoid collision, which may lead to device malfunctions, 
overheating, fire, or explosion.   

 Before you clean or maintain the device, stop using it, stop all 
applications, and disconnect all cables connected to it.  

 Do not use any chemical detergent, powder, or other chemical 
agents (such as alcohol and benzene) to clean the...