For what it's worth, I always prefer being redundant if it makes the meaning clearer to a non-native speaker audience.
For instance I didn't know "pandemic" implicitly meant "global". In my ignorance I thought you could have a localized pandemic. But by saying "global pandemic" it makes it more obvious to everyone, including those who, like me, didn't know.
Also I'll personally keep saying "my phone had an LCD display" because it feels smoother than "my phone has a LCD".
‘pandemic is defined as “an epidemic occurring worldwide, or over a very wide area, crossing international boundaries and usually affecting a large number of people”’
From an article on the national institute of health, specifically about the definition of a pandemic. And how the old definition of it being a global disease that spreads rapidly may not be effective anymore with flu strains due to vaccines.