Add "double-tap to exit" when on the call screen.

[Jakarrrg]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

While on a call, add the feature of having to double-tap Android's "back" button to exit the call's full-screen.

Why do you want this feature?

I have noticed that in many occasions, elderly people mistakenly hit the Android's "back" button to end the call, instead of the correct, default red button. Then they exit the call screen, but the call is not ended, and it is very complex for them to finally hang up the phone when it is on the background.

Additional information

At first I thought of requesting adding an option to completely disable the "back" button's functionality when on call's full-screen, but having to double or triple tap it should do the job.

I recently have chosen the app because of some features that make it friendly for elderly people, like the confirmation dialogue before making the call, choosing bigger letters, and having an all-time visible alphabetic index at the contacts, so the feature I request should complement perfectly the accessibility for the elderly. (These are actually, exactly all the things that caused problems in my case)

[antodc]

The goal is admirable, but I guess most of them will just keep tapping the back button until something happens.

Maybe an optional message like “The phone screen is about to be hidden, but the call will continue. Tap once more the back button if this is what you want”? Too complicated?

[Jakarrrg]

Thank you for showing interest!
Truth is, unfortunately, I don't expect them to be able to read any kind of a message, especially at that condition, as it could be a bit stressful since the call keeps going..

Maybe just adding an option at settings to completely disable the "back" button, or maybe even the whole navigation bar, would be the safest for our purpose, and I don't think elderly people with that kind of technology skills, would miss the multitasking option while on a phone call (from my experience the only way/reason for them to multitask while on a phonecall would be if the other person on the line is giving them instructions on how to do something on their phone, not at their own. In that case, they should be able to tell them how to bypass the restriction, supposedly we have provided that option someway.)

I don't know though, if it would cause impracticality, if for example, for some reason, the call app freezes and won't automatically close, or something like that.

The other level would be a triple tap like I mentioned earlier, hoping that in the meantime, they will try the big red button as well. From my experience, it should work by giving the necessary time to think better for the correct way to terminate the call.

Ofcourse, even amongst the elderly, people have different needs, familiarity with technology and reactions, so, other than my personal case, I am not sure with what level of intrusion should that feature be implemented.

The possible levels I can think of are as mentioned before: 1.disable whole navigation 2.disable the "back" button 3.require a triple-tap of the "back" button to exit 4.require a double-tap of the "back" button to exit

*(Among with the 1 and 2 levels, there could be implemented some original way to bypass that restrictions)