This trick is for reliance gsm customer only for India...
If you are suffering from very slow speed problem form reliance gprs 99 rs. pack .
Then try this trick to deactivate 99 gprs pack and after than use other 2g or 3g pack from Reliance.
1. For deactivating 99 gprs you have to reduce your gprs validity from 1month to 1day.
2. It is only possible if you recharge your mobile with another 2g gprs pack.
3. Now subscribe 5 rs. gprs pack it will give you 50 mb till mid night validity.
4. After subscription you found that your whole gprs pack validity reduced for till mid night.
5. Now next day your gprs pack will be nill, and you can try any other gprs pack.
6. For better speed try Reliance 3G packs.
** FINISH **