hmm....
its clearly said in surah Noor i think
abhi exact ayat nahi pata mujhe,, i can search if u want
im sure Z or SD know better than me
mehram aurat aur mard dono k hote hein,, last time i asked that question to a friend who is Masha Allah vv religious and he is agains working women coz he said majboori k bager namehram k saath baat karna, uss k samne jana galt hai,,
and i said tumhare office mei bhi to larkiyan kaam karti hein, jinn se tum baat bhi karte ho aur samne bhi jate ho,, unn ki taraf dekhte bhi ho aur jo k tumhare liye na-mehram hein
hmmm... answer yahan batane ki kya zaroorat hai, u can imagine
hmm,, i think i-net or phone or samne jana takreeban aik hi baat hai,, when u chat someone on messenger to its like tum uss shaks se akele mei baat kar rahe ho
same goes for phone calls