The real reason for headscarves

Some women with muslim faith wear a headscarf. As Germany is a very secular society(okay, besides some regions in Bavaria and seemingly near the town Vechta in Lower Saxony, but thats more an catholic issue ;) ) it´s relatively seldom. I thought in the past, that this is an public expression of a cultural and religious identity. I was totally wrong about that, as I saw the real reason for the headscarf today in a train: It´s simply a hands-free mounting for the mobile ;) A woman in the row in front of me put her mobile between her face and the scarf. Travel really broadens the mind.