Samsung SPH-a520, User Manual, Page: 104 / 119

103
Storing your phone
You must not store or carry your phone, its parts, or accessories in the same
compartment or other area where there flammable liquids, gases, or explosive
or flammable materials.
Cautions
Any changes or modifications to your phone not expressly approved in this
document could void your warranty for this equipment and void your authority
to operate this equipment.
Only use approved batteries, antennas, and chargers. The use of any
unauthorized accessories may be dangerous and will invalidate 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 hardware and can
be broken. Use common-sense guidelines to avoid dropping, hitting, bending,
or sitting on it.