mobile telcos: Spending time in different countries? Be careful to avoid your pocket being hollowed out by mobile companies
All the Indian sub-liars' roaming charges are geared towards the wealthy - the kind of Indian who won't notice when his phone bill fattens about four times for the pleasure of using calling and data that shouldn't cost that much. If you're not loaded, your best bet is to get a local number.
Source: indiatimes.com