Your Deezer mobile internet package (20MB, 1GB, 3GB or 5GB) includes access to thousands and thousands of legal tracks and albums and UNLIMITED and FREE access to m.facebook.com.
When you stream music on Deezer Premium+ on your mobile, data will be deducted from your Deezer mobile internet package, for e.g with Deezer mobile internet package 1GB at Rs 349, you can listen to some 200 tracks and download some 60 tracks to listen offline (when you have no internet connection) on your 3G/3G+ connection. You can also listen to unlimited no. of tracks on your Wi-Fi (mobile or PC) for the duration of your subscription.
Deezer mobile internet package is valid for 30 days, during which you can listen to music and have unlimited usage for m.facebook.com. Your package will be automatically renewed every month.
If you have used up your data allowance before the 30 days are over, you can still access your Deezer account on Wi-Fi or on 3G(Rs 2.50/MB PAYG or buy any mobile internet package).
More details on your Deezer Premium+ package here