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  Be aware of the usage limitation when using phone at places such as 
oil warehouses, or chemical factories, where there are explosive 
gases or explosive products being processed, because even if your 
phone is in idle state, it still transmits radio frequency (RF) energy. 
Therefore, power off your phone if required. 
  Do not touch the antenna while calling. Otherwise it will affect the 
quality of calling and waste battery energy. The damaged antenna 
will cause slight burn while touching your skin.  
  Keep phone out of the reach of small children. Phone may cause 
injury if used as a toy. 
  Do not put other things on the terminal to avoid overlaying radiator. 
  Keep the antenna free from obstructions and position the antenna 
straight up. This will ensure best call quality. 
Precautions for Potentially Explosive Atmospheres 
  Switch off your phone prior to entering any area with potentially explosive 
atmospheres, such as fueling areas, fuel or chemical transfer or