I am helping a handicapped person get a phone. They need something to be voice operated for calling and the problem I have with iPhone is that Siri won't let you do some things with the phone locked. So, I have been looking at using the Alexa App on an Android phone, as I have heard Alexa on an Android is somewhat better at voice commands to place a call and then hang up the call. One problem with Siri as an example is if you call someone and the call goes to voicemail, Siri will not hang up the phone. You either have to wait til the voicemail ends, or you have to ask another human to come hang up the phone for you.
Also, I don't want to leave the phone unlocked. The handicap person is in a nursing home and I don't want other folks having access to the phone and data and what not.
So, is Alexa App on an Android a good option for commanding phone calls without having to unlock and/or touch operate the phone?
Also, how old of an Android can be used with the Alexa App? Chances of the phone getting dropped and beat up or broken are high, so I'd rather get a used phone.