'Sooner than' meaning in this construction?

I have never seen a construction beginning with 'Sooner than' as the following one:

Sooner than fix the broken screen, l would buy a new mobile phone.

I looked it up in a number of dictionaries but i didn't find its meaning. I guess that it means ' instead of', doesn't it?


'Sooner' can be used when discussing preference. This usage is chiefly British.

Collins Dictionary:

Sooner
2. rather; in preference
I'd sooner die than give up

Sooner

The preference can be reversed from the above: sooner than give up, I'd choose to die.