Meet ESTIR, my smartphone-based voice activated robot

Hello guys, I would like to introduce ESTIR, that's my robot's name. This guy below is only around 4 months old by the time this picture has been taken.
I know he doesn't look so gorgeous but what he can do might amaze you. By the way, this is my team, they helped me create ESTIR in terms of fund and labor so as documentation.
Here are some key features of ESTIR.

• Voice recognition feature with text-to-speech
• ESTIR has the ability to avoid collision using the ultrasonic sensor.
• It can detect motion with the help of the PIR sensor.
• It can send and receive sms
• It can act as Wi-Fi hotspot
• It can take photo using the front camera of the smartphone
  ... and actually, there's a lot more. In short, ESTIR can access all sensors and/or features of my smartphone.

I am still actually developing ESTIR's voice recognition capability because by that time that I actually introduced ESTIR, voice commands and responses are pre-defined. I have big hope that soon, I will be able to create an autonomous, fully voice activated smartphone based robot buddy.