How to fix call not sent error on your Android device? You might not be able to answer that question if you don’t know what a callback occurs in the first place. So before we can answer it, let’s talk about the two common causes of this type of problem.
Call not sent error is typically caused by an inbound call that doesn’t go through and so your phone tries to return a callback. Although it is meant to give you some sort of notification as soon as the call has been received, it happens to not work properly. The reason why this type of problem occurs is because the system needs time to find out whether the caller ID was sent with the incoming call.
An inbound call is initiated by your phone or computer’s microphone but there is a bit of a problem with the return code that your phone receives from the computer. Your device is supposed to send the return code to the server but it fails to do so, triggering the inbound call not to go through. For sure, this is the root cause of call not sent error.
There are many causes for the call not sent error. First off, it is probably the result of an outbound call. When your phone is receiving a call, it tries to bring the call close to your microphone so that you can hear it.
But if you receive a call from an unknown caller and the call is being forwarded, the return code for the outbound call should also be able to trigger a callback. If the call is not forwarded, it will go directly to voicemail for the phone user.
To avoid these problems, make sure that your phone is set to forward all incoming calls. Keep in mind that if your phone is set to forward all calls, even outbound calls, then you will receive a call from an unknown caller. This will not make your call not sent error go away.
The second cause of the problem is probably the most common. Most phones these days have a lock screen security feature. If you press the unlock button and the lock screen come up, your phone is safe from getting a callback. So, keep in mind that if you press the unlock button of your phone after a call has been placed, your phone might not get a callback.
In conclusion, if you want to know how to fix call not sent error on your Android device, you should follow these tips. And remember that you should always keep your device locked to prevent it from getting any call not sent messages.