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 ● Do not use outside when you can hear thunder. Doing so might risk 
lightning strikes and electric shock.
 ● The customer is not allowed to disassemble, modify or repair the product. 
Doing so might cause a fault. Also, modification of the product is in 
violation of the Radio Law and/or the Telecommunications Business Law.
 ● Do not use product while driving a car or riding a motorbike or bicycle or 
while walking. Use of it while driving a car or riding a motorbike is 
prohibited by law. Use of a cell phone while riding a bicycle may be 
punishable by some regulations.
 ● When the product becomes warm during use, the screen brightness or 
part of its functions may be restricted.
 ■ Main unit
 ● Since the battery is built into the product, you cannot replace it yourself. 
For replacing the battery, contact the number listed on the last page of “取
扱説明書 詳細版 (Full Instruction Manual)” (Japanese).
 ● Do not forcefully press, tap or intentionally subject the display to strong 
impact. Doing so might cause scratching or damage.
 ● Do not forcefully press sharp objects or hard objects against keys or 
display surface. Doing so might cause scratching or damage.
 ● Never use the modified product. Use of a modified device violates the 
Radio Law and/or the Telecommunications Business Law.  
You can perform the following operations to confirm the unique 
authentication and standard marks (including certification/authentication 
numbers) for the product.  
On the home screen → “App list screen” → [Settings] → [About 
phone] → [Authentication]. 
The product has acquired the certification of conformity with technical 
regulations for the specified radio station based on the Radio Law and 
certification of conformity with technical regulations for the terminal based 
on the Telecommunications Business Law, and the “Technical Conformity 
Mark  ” can be confirmed in the product as a certificate. Confirm 
contents of electrical certificates in the product for information on 
certification.  
If the modifications are made to the internal components, the certification 
of conformity with technical regulations will become invalid. Never use the 
product without the valid certification. Doing so violates the Radio Law 
and/or the Telecommunications Business Law.