If you find noise when dialing a special number such as 112, it can be related to the poor network environment or the original sound source.
If you suspect that there is a problem with the device, you can ensure that the network signal is good, listen to music or call a friend's phone, and observe whether the sound is normal to confirm. If the above sound is normal, it indicates that you can use it with confidence. If the sound is abnormal, you can contact the local after-sales service center for further inspection of the equipment.