Its really awesome we can use free internet in banglalink i am sharing some tricks on free internet in banglalink sim.You can use this tips any mobile like Android, Symbian, Java, China etc.Now we go our main tips.
There are some step just follow :

Need instruments-
1)Firstly need mobile phone(Android, Java, Symbian)
2)Banglalink sim.
Follow System-
1)You should create a new APN, So follow the instruction .
2)At fast go Setting > Wireless & Network > Mobile Network > Access Point name > Banglalink > New Apm
3)APN Name is – Banglalink free Internet.
4)APN Type – Default,mms,supl,wap.
5)APN – Internet.
6)Use Proxy Number –
7)Port – 80

After this step you should download Opera Mini . Now you install opera mini in your phone. You have must minimum balance in your phone at lest 2 tk for install opera mini and active any internet Package. ( You can use pay as use go dial *789*2*6#). Now you can go opera mini setting and go socket/http you only select http.

– The Java mobile user follow the instruction and download opera mini

– The Symbian mobile user follow the instruction and download opera mini.

This tips is not permanent.if this tips does not working any mobile we cannot give any any suggestion because this tips is not permanent.androik does not carry any hermful task.