In case you missed out on all the big smartphone sales that happened before the world fully transitioned into 2013, T-Mobile has an online-only treat that might be of interest to you. The carrier is holding a sale of the Samsung Galaxy S3 on its web site that lasts until January 3rd. This applies to both the 16GB and 32GB models of the Galaxy S3, which have already been involved in numerous promotions that went live last month.

Through T-Mobile's online-only Galaxy S3 sale, the 16GB model can be purchased for only $99.99 after a $100 mail-in rebate while the 32GB model goes for $149.99 after a $100 mail-in rebate. T-Mobile also offers free shipping on all units that are purchased through the sale.

While today's discount prices for the Galaxy S3 aren't quite as good as what was available last month – before 2012 ended – at least it still gives customers a chance to save some money on their next smartphone. And a smartphone like the Galaxy S3 is certainly not a model to be overlooked. Have a look at the Galaxy S3 discount sale pages here: 16GB model (white),16GB model (blue),32GB model (white),32GB model (blue).