| 摘要 |
An electronic device includes a ring module, a vibration module, a noise sensing module, a storing module and a controlling module. The ring module plays a ring when receiving an incoming call. The vibration module generates vibration. The noise sensing module obtains a decibel (db) level of environment noise. The storing module stores a predetermined db level. The controlling module instructs the noise sensing module to obtain the db level of environment noise. The controlling module instructs the vibration module to vibrate after the controlling module determines the db level of environment noise is greater than the predetermined db level.
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