On Android 4.0 and above device bangla font support is available by default. Some Samsung and Sony made Android 2.3.6 devices are also well capable of displaying bangla font properly. If you still have problem to see bangla font on your device (Android/iPhone/S60/java based phone), you can use Opera Mini browser to see bangla website.

To view bangla webpage , open your Opera Mini browser. Now type " about:config "  in the address bar without the double quote.  Hit "go".

Now scroll down to the bottom of the page. Select  "Yes" for  "Use bitmap fonts for complex scripts" . Click save.

That's it. Now you can view bangla webpage effortlessly on your mobile.