But the most useful ones have been those that give free internet on cellphones even while on the move and even in roaming.
AIRTEL India has been the one cellphone service provider which has been thoroughly used by the youth of India to get free internet, free SMS, free calls and stuff like that for several years now.
The free internet in Airtel SIM cards started with a simple hack that worked on Opera Mini. It was simple, just open Opera Mini and the default Web browser with slightly different access point settings (of Airtel Live). And poof !!! You reached free internet. But that was blocked more than a year ago.
At that time, it was also possible to connect the free internet to a computer too (called tethering in Geekish) by using a proxy IP address. But all that has been blocked too.
Then came TeaShark browser. It also gave free internet access by GPRS on mobile phones by using the Airtel Live connection. But sad to say, that was blocked recently.
But wait, all is not lost, there is still hope for free internet in the form of a h browser called UCweb. It uses a Chinese proxy server, so maybe that is how it evades Airtel's data usage tracker(just a hypothesis, can anyone clarify ?)
UCweb still works (I've been using it for quite some time) but there is a setting that you have to change first before accessing internet through UCWeb.
You have to take Options > Settings > Settings
And remove the tick for Shadow connection and Twi-request
That is the current working hack for free internet in Airtel SIM cards.
What about other Indian mobile service providers ?
A Vodafone hack has also been found. Zoozoos are going to be happy huh ???
Basically, u have to change the GPRS access points settings.
Take an access point and change the following settings.
(from Tools > Settings >Access points )
Basic Settings :
Account Name : Vodafone_gprs
Homepage : http://live.vodafone.in
User Name: (not required)
Password :(not required)
Proxy Address: 10.10.1.100
Proxy Port: 9401
Data Bearer: Packet Data
Bearer settings :
Packet Data Access Point: portalnmms
Network type: IPV4
User Name :(not required)
Password :(not required)
Once u do this, it should work. If it doesn't, try restarting the phone. Or even reinserting the SIM card.
Let me know in the comments how effective these tricks were.
An additinal tip for those who want to browse from mobile.
They are mostly reached by changing "www." with "m."
For example, www.facebook.com becomes m.facebook.com
www.orkut.com becomes m.orkut.com
www.gmail.com becomes m.gmail.com
These mobile sites are useful even on a computer if u have a slow connection and just want to check for small messages.
Hope this was useful.