专家建议安全使用手机,尽量让手机离自己远一点,避免电磁辐射。如果听不到机响,怎么办呢? 有了感应器,你就无须再担心因为手机放在包里而不能及时接收来 Experts recommend the safe use of mobile phones, try to keep the phone away from them, to avoid electromagnetic radiation. If you do not hear the sound, how to do? With the sensor, you no longer have to worry about because the phone in the bag and can not receive in time