Samsung's Galaxy S4: Introduction & Hands On

Since 2010 Samsung has grown to become not only the clear leader in the Android smartphone space, but the largest smartphone manufacturer in the world. Its annual iteration of the Galaxy S platform is now arguably one of the most widely anticipated smartphone launches each year.

Like clockwork, tonight Samsung announced the Galaxy S4: a 5-inch 1080p smartphone, and the new flagship for the Galaxy brand. We just finished learning about the device and spent a short time playing around with it.

Most of the hardware specs are known quantities. The 5-inch Super AMOLED display features a 1080p resolution, for a pixel density of over 441 ppi. The chassis is plastic with a metallic looking rim around the edge. Like most Samsung devices, the Galaxy S4 feels well built although the plastic construction makes it the polar opposite of HTC's One - and truthfully in a different league altogether. I don't personally believe Samsung's use of plastics is terrible, but it definitely doesn't lend itself to the same sort of remarkable designs we see from HTC or Apple. On the plus side the SGS4 feels very light (it's even lighter than the SGS3). The tradeoff between material feel and weight is one that has a spectrum of solutions. Samsung remains on prioritizing weight and cost, which is understandable given the success the company has seen thus far.

The SGS4 feels surprisingly comfortable in hand, partly due to weight and party due to the device's proportions. I didn't mind the size at all.

The Galaxy S4 is available in two colors: white frost and black mist. I played with an international SGS4 variant in white frost.

Smartphone Spec Comparison
	Apple iPhone 5	HTC One	Samsung Galaxy S 3	Samsung Galaxy S 4
SoC	Apple A6 1.3GHz	Snapdragon 600 1.7GHz	Snapdragon S4 1.5GHz	Exynos 5 Octa (1.6/1.2GHz) or Snapdragon 600 1.9GHz
DRAM/NAND/Expansion	1GB LPDDR2, 16/32/64GB NAND	2GB LPDDR2, 32/64GB NAND	2GB LPDDR2, 16/32GB NAND, microSD	2GB LPDDR3, 16/32/64GB NAND, microSD
Display	4.0-inch 1136 x 640 LCD	4.7-inch SLCD3 1080p, 468 ppi	4.8-inch Super AMOLED 720p, 306 ppi	5-inch Super AMOLED 1080p, 441 ppi
Network	2G / 3G / 4G LTE Cat 3	2G / 3G / 4G LTE Cat 3	2G / 3G / 4G LTE Cat 3	2G / 3G / 4G LTE Cat 3 (depending on region)
Dimensions	123.8mm x 58.6mm x 7.6mm	137.4mm x 68.2mm x 4mm - 9.3mm	136.6mm x 70.6mm 8.6mm	136.6mm x 69.8mm x 7.9mm
Weight	112g	143g	133g	130g
Rear Camera	8MP	4MP w/ 2µm pixels	8MP	13MP
Front Camera	1.2MP	2.1MP	1.9MP	2MP
Battery	Internal 5.45 Wh	Internal 8.74 Wh	Removable 7.98 Wh	Removable 9.88 Wh
OS	iOS 6.1.2	Android 4.1.2	Android 4.1.2	Android 4.2.2
Connectivity	802.11a/b/g/n, BT 4.0, USB 2.0, GPS/GNSS	802.11ac/a/b/g/n + BT 4.0, USB2.0, GPS/GNSS, MHL, DLNA, NFC	802.11a/b/g/n, BT 4.0, USB 2.0, NFC, GPS/GNSS, MHL	802.11a/b/g/n/ac (HT80) + BT 4.0, USB 2.0 NFC, GPS/GNSS, IR LED, MHL 2.0

The back cover remains removable, as does the 9.88Wh battery:

Internally, there’s 2GB of memory and 16 - 64GB of on-board NAND, with a microSD card slot for optional storage expansion.

As expected, the SoC will vary depending on region. Samsung will offer either its own Exynos 5 Octa or a 1.9GHz quad-core Snapdragon SoC from Qualcomm. Given the clock speed and the timing, I would assume Samsung is talking about a Snapdragon 600 but the only official word from Samsung is the 1.9GHz quad-core Snapdragon.Update: Qualcomm has confirmed that this is a Snapdragon 600.

The Exynos 5 Octa side is a bit more interesting. Samsung is calling the SoC a 1.6GHz Octa-core part, but that appears to be the clock speed for the four Cortex A7 cores. The four Cortex A15 cores will run at up to 1.2GHz, which should help keep power consumption manageable. We’ve been wondering for a while what clock speeds we’d see the Cortex A15s run at in smartphones, and I believe this is the first line drawn in the sand. If we go back to Samsung’s ISSCC disclosure of Exynos 5 Octa power consumption, it looks like peak CPU power consumption should be somewhere around 2W - definitely better than what we saw from Exynos 5 Dual in the Nexus 10. Again, no surprises here given that we’re talking about a smartphone - it’s just interesting to see. Update: There seems to be some confusion as to whether or not the A7/A15 clocks are 1.6/1.2 or 1.2/1.6. I was told the former and that's what I wrote down, but it's entirely possible that the information given wasn't correct. I'm awaiting for further confirmation. Although 1.2GHz makes sense for a max clock for the A15s, 1.6GHz is a bit high for A7s if they're truly to be used to keep power consumption down. I can see it working either way.

Samsung isn’t ready to talk specifics about what SoCs will end up in what regions. We weren’t allowed to run any downloaded applications or benchmarks on the hardware at the event, nor were we told what SoCs were used in the demo hardware. Both SoCs should be good choices though.

Similarly, there’s no disclosure on what baseband silicon is being used although LTE support will be offered depending on the region. It’s highly likely that we’re looking at another MDM9x15 with a discrete applications processor (Snapdragon or Exynos 5 Octa). All of the expected wireless connectivity options are present including 802.11ac and BT 4.0. Samsung is claiming support global LTE roaming (up to six different bands) and FDD/TDD LTE.

As is the norm these days the Galaxy S4 comes with both a front and rear facing camera. The front facing camera features a 2MP sensor and is capable of recording video at 1080p30. The rear facing camera sees a move to a 13MP sensor with flash. No word on the max aperture or focal length of the camera systems at this point.

The Galaxy S4 will ship with Android 4.2.2. It will be available both internationally and in the US starting sometime in Q2 (Update: first shipments will be in April). US operators signed up to carry the Galaxy S4 are AT&T, T-Mobile, Sprint, Verizon, Cricket and US Cellular.