I would get the Galaxy S3.
Both the Samsung Galaxy S5 and Galaxy S3 have micro-SIM cards. So, it should work.
Yes
To root a Galaxy S3, see the related link below.
No, the Galaxy S3 does not have a built in HDMI port.
No, The Galaxy S3 Does not have an HDMI port built in.
The Samsung Galaxy S3 was released on May 29, 2012.
Nope! It's smaller than the S3.
Yes, the Samsung Galaxy S3 comes with a pre-installed texting app.
The battery of your Samsung Galaxy S3 lasts for about 4-5 hours if you are only talking on the phone, and fewer hours if you are surfing the Internet.
Ideally, S3, but S2 would be better than the iPad and cheaper than the S3.
Yes. The Samsung Galaxy S3 runs Android version 4.1