Firstly, You have to Migrate Your Package To "Banglalink Play" Package.
This can be done by One of the following two ways --
1.type p and send sms to 9999 (free).
2.dial *999*1*147# (free).
Now from your handset’s default browser dial 0.facebook.com. in case of using other proxy rendering browsers like opera or blackberry browser data charge will be applicable. in case of viewing any rich content (photo, videos etc.) and in case of going to another website link from facebook data charges will apply.
This can be done by One of the following two ways --
1.type p and send sms to 9999 (free).
2.dial *999*1*147# (free).