Lenovo IdeaPad U550 - Manual (Page 123)

Appendix E. Notices
109
3
Use of mobile devices on board aircraft is explicitly prohibited by
many airlines companies, especially during take-off and landing. The
built-in Mobile Broadband module on your computer is a low-power
radio transceiver. When it is turned on, it intermittently receives and
transmits radio frequency (RF) energy which could cause interference
with the operation of the airplane communication or navigation
system. Refer to rules or regulations of your airline company for
Mobile Broadband use. Never enable Mobile Broadband feature on
your computer unless you are explicitly permitted to do so.
4
Follow restrictions when using your computer in hospitals. Some
equipments in hospitals are sophisticated and are susceptible to
electromagnetic interference. Do not enable Mobile Broadband feature
near medical equipment without requesting permission.
5
The Mobile Broadband communication may affect the operation of
implanted cardiac pacemakers and other medically implanted
equipment. Patients with cardiac pacemakers should be well aware
that use of Mobile Broadband feature on this computer may cause the
implanted device to malfunction. If patients have any doubt that there
is interference taking place, immediately disable the wireless radio on
the computer and contact the doctor for more information.
6
The Mobile Broadband module embedded in your computer does not
support voice calls, hence their use for essential communications is not
possible. Therefore you should never rely upon the device for essential
communications.