Learn French: Il vaut mieux vérifier le Wi-Fi, où que vous habitiez. - It is better to check the Wi-Fi, wherever you live.

In French, the expression où que means wherever and introduces a concession or an unknown variable. Because the exact location is not specified or does not matter to the outcome, it creates a sense of uncertainty that always triggers the subjunctive mood.

The verb habitiez looks exactly like the imperfect tense. Is it?

It is the present subjunctive, but it shares the exact same form as the imperfect for the nous and vous pronouns. Since où que strictly requires the subjunctive, you can be certain it is the subjunctive mood being used here, even though the spelling is identical to the imperfect.

Why use il vaut mieux vérifier instead of c'est mieux de vérifier?

Both translate to it is better to check and are highly interchangeable. However, il vaut mieux (from the verb valoir, meaning to be worth) is a set impersonal expression that is always followed directly by an infinitive with no preposition. If you use c'est mieux, you must add the preposition de before the infinitive.

Could I use n'importe où instead of où que to mean wherever in this sentence?