Call Dropped

Hello friend!
A call drop occurs when:
- Slips occur in media.
- There is some antenna tilting.
- Phone goes out of range.
- Electric and mechanic tilts occur.
- Signal interference occurs.

Thanks!

Hi user。
1, the strong interference of radio waves can cause offline.
As mobile communication is propagated by airwaves, when the airwaves of some radio waves are being used to produce a degree of interference to a certain extent, the use of signal noise ratio dropped to below the standard value, the phone will automatically shut down, there will be dropped calls.
2, the propagation of blocking and building reflections, interference on the receiving point of the radio waves will also appear offline.
3, the cross-area switch failure occurs, the user calls the voice channel needs to be switched from the original cell to the new service area, but the new service area of the user is also random, if the switch does not have a valid version of the then voice channel can be provided, the cross-area switch will fail, resulting in mobile phone disconnection.
Thanks！