All you need is a headphone and you can start chatting. Bangalore, now known officially as Bengaluru (Kannada: ಬೆಂಗಳೂರು), is the capital of the Indian state of Karnataka.
In India, prostitution (the exchange of sexual services for money) is legal under certain conditions, and a number of related activities, including soliciting in a public place, kerb crawling, owning or managing a brothel, pimping and pandering, are crimes.
For a foreign customer the negotiating situation to make the price as low as possible might be more challenging than for local men.
Often street hookers might first ask even 1500 INRs from a foreign customer, but that's definitely too much unless she is a real stunner (which is very uncommon).
Bangalore does not have a designated red-light district unlike Mumbai or Delhi.