[Upgrading, Modifying and Unlocking] mrsureshisha:
With ICS you will see the actual power of Android on this 1 Ghz Spice model.

With Chrome browser (not available to GB) you will be more than satisfied. I am a great fan of Mozilla Firefox, but I will vote for Chrome than firefox in android. Its fast and smooth. No need for Opera or any other browser for Incognito mode.

The first thing you will notice is the touch. The touch will be more smother and responsive than in GB(May be its my illusion, but I think its this way).

The camera has more features than the GB version. Panarama shots are available by default in ICS. Image editing is possible. You can mute the clicking sound effect, which will be useful when we want to take pictures candidly. In video mode we can zoom, which is not present in GB camera. Pictures taken are good. I have tried few other camera apps. I am satisfied with the default app itself.

You can now add widgets very easily from the settings, which has to tabs, one for apps and one for widgets.

You can remove notifications just by swiping it in the notification panel.

The dark blackish elephant grey background with the sky blue stipe in the notification panel and in the popups are very attractive.

When USB is connected with PC you will see three options, usual data sharing, debugging mode and one more option for Media device to transfer media files on windows or Mac and another option to transfer pictures taken from camera.

You can group apps on the screens and name the group. I have groups utility apps,games, apps for root exploring, news, etc.,

You can see from settings which app or system utility is using how much battery.

You can see Storage on the system and sd card with graphical representations for apps, pictures, videos, audio and can analyze which to remove or which to keep.

You can set to show the touches we make on the screen visually.

The opening unlock screen itself is very good.

The system is really smooth with ICS.

Launcher Plus is the default launcher, which is recommended by experts. So no need for any other launchers, like holo launcher and holo locker.

You will love the phone dialer. Its fantastic. Can add speed dial numbers

I have rooted. The method is absolutely simple, thanks to Suhas.

Waiting for custom ROM.

The main difference is the heating at the bottom. It has drastically come down. The mobile heating is very very low and is comparable to any other devices like samsung or htc. And after using so many hours, if I keep it aside for a few minutes it will become absolutely cool.

You can stop the running apps to free the memory by simply long pressing the home key and just swiping the apps.

(Use Tubemate, Mediaconverter and MX Player. You can download youtube videos with high resolution and convert it to mp3. Through tubemate's explorer you can play FLV files with MX Player, no need for separate for FLV file.)

If any hanging like problem or some problem happens (as smart phones are also mini computers it occurs), just by restarting we can see the difference. Its for all versions too.

The stock keyboard is good. I use swype. I would prefer swiftkey but its trial version only, after the trial you have to buy. But its phenomenal.

Network is superior than in GB. I can clearly see the difference. My net connection has improved so much. The down time is negligible now due to out of network coverage. I have checked with it.

I will tell you more when I see or remember more.....

I think if the new base bands are available, everybody can upgrade to ICS at home itself. But it seems to be, right now its not available other than the service center.:)