I live in a city where there is no sound of azan and only countable masjids that recite azan only within their area of masjid. I wanted to ask if i have to wait for the azan to happen in the masjid even though I can’t physically hear it to be able to read Fajr? Or can i read it as soon as I finish praying tahajjud and it is time for Fajr? I have been doing the latter just wanted to confirm what is the ruling if you can’t physically hear the azan do you still have to wait even though the time of Fajr has started? And is it any different for men or women?