Sharp AQUOS Crystal - Manual (Page 438)

For Assistance 429
For Assistance
The following topics address areas of support for your phone, including troubleshooting,
specifications, account information, warranty information, and customer service contact information.
Troubleshooting
Check the questions and answers below for troubleshooting solutions for common phone issues.
Check Here First
Question: Phone does not turn on.
Answer: Are you holding the Power key down? Continue pressing the Power key until the logo
is displayed.
Answer: Is the phone charged? Recharge the phone if not charged.
Question: Phone turns off/does not turn on.
Answer: If you continue using your phone while it is warm, a caution is displayed and your
phone turns off in 3 minutes. Exit any apps and turn off the screen to let the phone cool down.
Question: Phone freezes/operation is unstable.
Answer: If your phone freezes or you cannot operate it, you can force your phone to turn off.
Press and hold the Power key for 8 seconds or more.
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Release the Power key once your phone vibrates. Your phone turns off.
Question: Operation is unstable after a new application was installed.
Answer: The newly installed application may be the cause. Uninstall the application. See
Uninstall an App .
Question: Phone starts operating on its own without touching the screen/phone does not respond
to screen touch.
Answer: Press the Power key to turn off the screen, and then press again to turn the screen on
before using the phone.
Question: Cannot use phone, mail, or Internet.
Answer 1: Check whether you are where signal is weak or out of service area.
Answer 2: Power the phone on again.
Answer 3: Is the phone in Airplane mode? To check that Airplane mode is cancelled:
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From home, touch > Settings > More... > Airplane mode.
Answer 4: Is data communication disabled? To check that data communication is enabled: