Yes you still can get the 50GB if you already had a dropbox account. When I got my S3 all I did was log into the dropbox app that was preinstalled. After about 10 minutes I got a notification on my PC's dropbox app saying that my account has been upgraded with an extra 50GB.

 

It should just automatically upgrade when you sign in on your SGS3.

Some US carriers (Verizon and Sprint) did not give this away, but most carriers did. But its down to the carrier whether its provided or not.

 

Sprint did give away the 50GB.

 

Maybe its Verizon and AT&T then. I don't know they're all the same to me.

Anyway, my point it, you may or may not get the space depending on whether your carrier did a deal with Dropbox or not.

 

ATT and VZW did not participate in this program.

 

My DropBox account was upgraded to 50 GB when I activated my Sprint SG3

 

Well that's a bit sneaky of the carriers then. My phone is the unbranded version and came pre-loaded with dropbox so I was eligible.

 

I installed kyanROM on my at&t gs3, and received the 50gb dropbox. Wasn't expecting it, and no longer on that ROM, but its definitely nice to have, being a long time user.

 

Surely the drop box space is subsidised by the carrier, hence it being only 2 years.

 

Oh I see. Well US carriers are the worst in the world for charging the earth for nothing so wouldn't surprise me that they want to limit bandwidth use or make people pay them for a service