Precautionary Guidelines For Mobile Users - Lenovo Z1221 Quick Start Manual

Precautionary guidelines for mobile users

Mobile users are advised to take precautionary measures while
using a mobile handset as:
1. Keep distance – Hold the cell phone away from body to the
extent possible.
2. Use a headset (wired or Bluetooth) to keep the handset
away from your head.
3. Do not press the phone handset against your head. Radio
Frequency (RF) energy is inversely proportional to the
square of the distance from the source -- being very close
increases energy absorption much more.
4. Limit the length of mobile calls.
5. Use text as compared to voice wherever possible.
6. Put the cell phone on speaker mode.
7. If the radio signal is weak, a mobile phone will increase
its transmission power. Find a strong signal and avoid
movement – Use your phone where reception is good.
8. Metal & water are good conductors of radio waves so avoid
using a mobile phone while wearing metal-framed glasses
or having wet hair.
9. Let the call connect before putting the handset on your ear
or start speaking and listening – A mobile phone first makes
the communication at higher power and then reduces power
to an adequate level. More power is radiated during call
connecting time.
10. If you have a choice, use a landline (wired) phone, not a
mobile phone.
11. When your phone is ON, don't carry it in chest/breast or
pants pocket. When a mobile phone is ON, it automatically
transmits at high power every one or two minutes to check
(poll) the network.
12. Reduce mobile phone use by children as a younger person
will likely have a longer lifetime exposure to radiation from
cell phones.
13. People having active medical implants should preferably
keep the cell phone at least 15 cm away from the implant.