Had to replace battery one week after being.phone kept saying can't find SIM card then shut off.city compatible to certain apps which is very strange.I can't download certain simply apps from play store keep saying my device is not comparable .

Samsung has the worst customer service EVER. Don't buy S4 or any other expensive device from Samsung.  I had S4, which has charging issue, sometimes it takes 10-12 hours to complete charge the battery. It has been 5 months issue is still not resolved and mobile is only 6 month old.

Great phone for the money. Very easy to use and set up.

Phone is delivered before the given time. Packaging is very good. The phone is very good and light weight. Multiple extra and new functionality in this. Good internal memory. Don't think there is too much heating problem.

S4 really suckz.. My friend just bought it 3 months back and already we have given it thrice to the service center. Motherboard has already been replaced. There is a manufacturing defect with the phone but they never accept it.

Purchased this phone not even a month ago (day it came out) and have had problems ever since. Lags continuously, fast battery life, deletes messages you're writing right before your eyes, constantly runs apps which you've given no permission to run or you've forced close (which you ALWAYS have to do...

camera; bright colourful screen

slow processor, lags constantly, short battery life, pointless software, always running apps when you force close, bad reception; especially in regards to internet

Samsung's Galaxy S?III is a very sweet Android smartphone , arguably the best of its generation. So you have to wonder what Samsung could do to meaningfully push the envelope in the Galaxy S?4 now available at some carriers (Sprint and AT&T) and soon to be offered at others (Verizon Wireless and...

Cons

Price

I am very disappointed with the front camera. It does not focus properly - especially for more distant/landscape photos. I have tried to change the metering settings and have also tried downloading another camera app. But these solutions have not helped.

I upgraded from the s3 and I'm not disappointed. Sure it looks and feels like the s3 but it's way more. First off the screen is amazing ! even at half brightness it still rocks! battery life is good, gets me through the day and that's what matters.

This phone, in my opinion, is top quality. I am thrilled with it. It is easy to use, easy to read, the volume is easy to hear and very clear. It suits me perfectly.