The Final Verdict
The Samsung Galaxy S 4G ranks in the 'Average' category. While the original Samsung Vibrant was a breath of fresh air to a stagnant T-Mobile line up, the Galaxy S 4G actually acts as a bit of an insult to T-Mobile customers. It hasn't even been a full year yet, meaning customers who bought the Vibrant can't get the Galaxy S 4G at a discount. Even if they were able to, it's really a negligible upgrade, and in all honesty, a step backward.
The lag is a huge killing factor for the Samsung Galaxy S 4G. In addition, while the battery size has been increased to 1650 mAh, it seems to run out of battery faster. With live wallpaper enabled, and some Internet radio applications running for about an hour, and about 30 minutes or so of calling, it lasted a little over 5 hours, which is a huge disappointment. Also, with Gingerbread becoming readily available to smartphones, one has to wonder if the Galaxy S 4G will receive an update soon or have the massive lag time for updates like its predecessor.
Overall, a disappointment from T-Mobile and Samsung. While AT&T and Verizon updated their Samsung Galaxy line up with the Samsung Infuse, Samsung Continuum and an unnamed Samsung LTE device, T-Mobile took a very weak approach releasing a smartphone that should've been a bigger update. While people who already have Android powered handsets may not feel the need to get the Samsung Galaxy S 4G, new users interested in getting a smartphone should try picking one up.