To root a Galaxy S3, see the related link below.
The rooting process means full access to the phone's software core. It's similar with the re-installation of Windows, for example. However, if you want to root you Galaxy S3, you can use the guide in the related link.
Framaroot is an application that will allow you to root your phone without a computer.
Yes
No, the Galaxy S3 does not have a built in HDMI port.
No, The Galaxy S3 Does not have an HDMI port built in.
S3.
Nope! It's smaller than the S3.
The Samsung Galaxy S3 was released on May 29, 2012.
I would get the Galaxy S3.
Yes, the Samsung Galaxy S3 comes with a pre-installed texting app.
Yes. The Samsung Galaxy S3 runs Android version 4.1
Both the Samsung Galaxy S5 and Galaxy S3 have micro-SIM cards. So, it should work.