LG G4 User Guide

90FA Q
Category Question Answer
Screen time 
outMy screen turns off 
after only 15 seconds. 
How can I change the 
amount of time for the 
backlight to turn off?1.  From the Home screen, touch and 
hold 
.
2.  Tap System settings > Display tab.
3.  Tap Screen timeout.
4.  Tap the preferred screen backlight 
timeout time.
Wi-Fi & 
mobile 
networkWhen the Wi-Fi and 
mobile networks are 
both available, which 
service does my 
phone use?When using data, your phone may 
default to the Wi-Fi connection (if...

91FA Q
Category Question Answer
AlarmCan I use music files 
for my alarm?Yes. After saving a music file as a 
ringtone, you can use it as an alarm.
1.  Touch and hold a song in a library 
list. In the menu that opens, tap Set 
as ringtone > Phone ringtone or 
Caller ringtones.
2.  On the Alarm Clock Setting screen, 
select the song as a ringtone.
AlarmWill my alarm be 
audible or will it go off 
if the phone is turned 
off?No, this is not supported.
AlarmIf my ringer volume is 
set to Off or Vibrate,...

92Safety
HAC
This phone has been tested and rated for use with hearing aids for some of the 
wireless technologies that it uses. However, there may be some newer wireless 
technologies used in this phone that have not been tested yet for use with hearing 
aids. It is important to try the different features of this phone thoroughly and in different 
locations, using your hearing aid or cochlear implant, to determine if you hear any 
interfering noise. Consult your service provider or the manufacturer of...

93Safety
typical body-worn operations may not comply with FCC RF exposure limits and should 
be avoided.
Caution
Use only the supplied antenna. Use of unauthorized antennas (or modifications to the 
antenna) could impair call quality, damage the phone, void your warranty and/or violate 
FCC regulations. 
Don’t use the phone with a damaged antenna. A damaged antenna could cause a 
minor skin burn. Contact your local dealer for a replacement antenna.
Part 15.19 statement
This device complies with part15 of...

94Safety
user is encouraged to try to correct the interference by one or more of the following 
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-   Connect the equipment into an outlet on a circuit different from that to which the 
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
  Consumer Information About Radio Frequency 
Emissions
Your wireless phone, which contains a radio transmitter and...

95Safety
issued its own website publication stating that “there is no scientific evidence that 
proves that wireless phone usage can lead to cancer or a variety of other problems, 
including headaches, dizziness or memory loss.”This publication is available at http://
www.fcc.gov/cgb/ cellular.html or through the FCC at (888) 225-5322 or (888) CALL-
FCC.
What does “SAR” mean?
In 1996, the FCC, working with the FDA, the U.S. Environmental Protection Agency, and 
other agencies, established RF exposure...

96Safety
used with wireless phones for convenience and comfort. These systems reduce the 
absorption of RF energy in the head because the phone, which is the source of the 
RF emissions, will not be placed against the head. On the other hand, if the phone is 
mounted against the waist or other part of the body during use, then that part of the 
body will absorb more RF energy. Wireless phones marketed in the U.S. are required 
to meet safety requirements regardless of whether they are used against the...

97Safety
U.S. Food and Drug Administration
FDA Consumer magazine November-December 2000 
Telephone: (888) INFO-FDA 
http://www.fda.gov (Under “c”in the subject index, select Cell Phones > Research.)
U.S. Federal Communications Commission
445 12th Street, S.W. Washington, D.C. 20554
Telephone: (888) 225-5322
http://www.fcc.gov/oet/rfsafety
Independent Expert Group on Mobile Phones
http://www.iegmp.org.uk
Royal Society of Canada Expert Panels on Potential Health Risks of Radio 
Frequency Fields from...

98Safety
National Council on Radiation Protection and Measurements
7910 Woodmont Avenue, Suite 800
Bethesda, MD 20814-3095
Telephone: (301) 657-2652
http://www.ncrponline.org
Engineering in Medicine and Biology Society, Committee on Man and Radiation 
(COMAR) of the Institute of Electrical and Electronics Engineers
http://ewh.ieee.org/soc/embs/comar/
Consumer Information on SAR
(Specific Absorption Rate)
This model phone meets the government's requirements for exposure to radio waves. 
Your wireless...

99Safety
model is available for sale to the public, it must be tested and certified to the FCC that it 
does not exceed the limit established by the government-adopted requirement for safe 
exposure. The tests are performed in positions and locations (e.g., at the ear and worn 
on the body) as required by the FCC for each model. 
The highest SAR values are:
• Head: 1.08 W/kg
• Body (Body-worn/Hotspot): 1.03 W/kg
(Body measurements differ among phone models, depending upon available 
accessories and FCC...