Samsung GT-I9100 User Manual page 17

-Consult the dealer or an experienced radio/TV technician for help.
The phone may cause TV or radio interference if used in close proximity
to receiving equipment. The FCC can require you to stop using the phone
if such interference cannot be eliminated.
Vehicles using liquefied petroleum gas (such as propane or butane) must
comply with the National Fire Protection Standard (NFPA-58). For a copy
of this standard, contact the National Fire Protection Association, One
Battery march Park, Quincy, MA 02269, Attn: Publication Sales Division.
Cautions
Changes or modifications made in the radio phone, not expressly
approved by Samsung, will void the user's authority to operate the
equipment. Only use approved batteries, antennas and chargers. The use of any
unauthorized accessories may be dangerous and void the phone warranty
if said accessories cause damage or a defect to the phone.
Although your phone is quite sturdy, it is a complex piece of equipment
and can be broken. Avoid dropping, hitting, bending or sitting on it. Within the
5.15–5.25 GHz band, UNII devices will be restricted to indoor operations to
reduce any potential for harmful interference to co-channel MSS operations in US
Other Important Safety Information
 Only qualified personnel should service the phone or install the
phone in a vehicle. Faulty installation or service may be dangerous
and may invalidate any warranty applicable to the device.
 Check regularly that all wireless phone equipment in your vehicle is
mounted and operating properly.
 Do not store or carry flammable liquids, gases or explosive
materials in the same compartment as the phone, its parts or
accessories.
 For vehicles equipped with an air bag, remember that an air bag
inflates with great force. Do not place objects, including both
installed or portable wireless equipment in the area over the air
bag or in the air bag deployment area. If wireless equipment is
improperly installed and the air bag inflates, serious injury could
result.
 Switch your phone off before boarding an aircraft. The use of
wireless phone in aircraft is illegal and may be dangerous to the
aircraft's operation.
 Failure to observe these instructions may lead to the suspension or
denial of telephone services to the offender, or legal action, or both.
Product Performance
Getting the Most Out of Your Signal Reception
The quality of each call you make or receive depends on the signal
strength in your area. Your phone informs you of the current signal
strength by displaying a number of bars next to the signal strength icon.
The more bars displayed, the stronger the signal.