The Karbonn Titanium S1 Plus is a carbon copy of the Iris 406Q in terms of specs featuring the same Snapdragon 200 quad-core processor, Adreno 302 GPU with 1 GB RAM running Android 4.3 Jelly Bean. There's a 4-inch WVGA display as well, which turned out to be much better than the one on the 406Q. But more on that later, lets first have a look at the Gaming Review of the Karbonn Titanium S1 Plus.
GT Racing 2, Dead Trigger 2, Frontline Commando: D-day, Riptide GP2, Real Football were the only high-end games we were able to install on the Karbonn Titanium S1 Plus. Its sufficed to say that gameplay is lag free and that's really what we expected with 1 GB RAM and Adreno 302 GPU. App-data is not movable to the SD card. So, only just these handful of large games were install-able since you have about 1 GB of internal storage which is definitely not enough for gaming. Its shame, since this seems like a better offering overall than the Iris 406Q. But it suffers from the same heating issues, where gameplay makes the phone quite hot, not something you would want on a device that you keep with yourself all the time.
The speaker is in front, its louder than the Iris 406Q but it crackles a bit at full volume.
Karbonn undercut the Iris 406Q with the Titanium S1 Plus by about Rs. 1000 delivering better build and display. But it suffers from the same issues. It gets heated while playing games and app-data is not movable to the SD card. The heating issue should definitely have been resolved prior to launch seeing the feedback from the Iris 406Q but it wasn't done. Therefore, just from the gaming standpoint, both the Iris 406Q and the Titanium S1 Plus are better to stay away from.