SoftBank 815T User Manual page 22

7 The communication antenna of the handset is built into the body and does
not protrude. Signal sensitivity may be reduced if you touch or cover the
portion of the body containing the internal antenna (page 1-7). In
particular, do not affix things like stickers onto this portion of the body.
Doing so may prevent you from making/receiving calls, sending/receiving
messages or accessing Web.
7 When you replace the handset or send it for repair, messages and other
data stored in the handset cannot be transferred to another handset.
7 Do not drop the USIM card or subject it to excessive shock. Doing so may
cause a malfunction.
7 Do not bend the USIM card or place a heavy object on it. Doing so may
cause a malfunction.
7 Do not allow the USIM card to get wet or leave it in places of high
humidity. Doing so may cause a malfunction.
7 Do not use or leave the USIM card in hot places such as near a fire or
heater. Doing so may cause a malfunction.
7 Avoid storing the USIM card in direct sunlight or hot and humid places.
Failing to do so may cause a malfunction.
7 Keep the USIM card out of infants' reach. Failing to do so may result in the
USIM card being accidentally swallowed or cause an injury.
7 Before using the USIM card, read the instruction manual of the USIM card
thoroughly to ensure safe and proper operation.
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Functional Limitations
7 After handset upgrade or subscription cancellation, the following functions
become unavailable on handset:
・Camera
・Media Player
・S! Appli
7 Above functions may become unavailable after long periods of handset
disuse. Contact your nearest SoftBank Shop or contact SoftBank General
Information (page 21-36).