won't import whole file

I recorded a voice audio on my cell phone
It saves as an .amr file
I copy the file to my computer and play it in audacity but it only seems to import the first minute of the audio because I used the pause button during when I was making the recording and audacity only shows the track up to the first pause and won’t play the rest.
I tried using the import feature but I don’t know what settings to choose.
I can play the whole file on my cell phone and I saved the whole file on the computer
I am using version 2.2.2 on windows 7



This document thinks Audacity should work, but if it doesn’t, there are other possibilities including one on-line converter.