I tried to press the button 1 for a few seconds to be able to acess my message vocals and it doesn't work, the call ends up without having the possibility of hearing my messages. I also tried composing my phone number with # and it doesn't work as well.
Help anyone? I have a Samsung Galaxy Q
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Seems to me that you don't have the correct voicemail centre number stored on your phone. Click here to find the voicemail centre numbers (it would depend on your phone number / location).
To store it in your phone settings so that you can access it by pressing #1, go to settings > call > voicemail settings and enter the correct voicemail number.
Let us know how it goes!