Samsung SM-Z300F/DS User Manual page 17

You select a contact to call, but the call is not dialled.
The battery does not charge properly or sometimes the phone turns itself off.
 The battery terminals may be dirty. Wipe both gold-coloured contacts with a
clean, soft cloth and try charging the battery again.
 If the battery will no longer charge completely, dispose of the old battery
properly and replace it with a new battery.
Your phone is hot to the touch.
When you use several applications at once, your phone requires more power and
may heat up.
This is normal and should not affect your phone's lifespan or performance.
FCC Notice and Cautions
FCC Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause
undesired operation.
 This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
 Ensure that the correct number is stored in the contact list.
 Re-enter and save the number, if necessary.