HTC Sensation 4G Review - A Sensational Smartphone
by Brian Klug on July 1, 2011 12:38 AM EST- Posted in
- Smartphones
- HTC
- Android
- Mobile
- HTC Sensation
- MSM8260
Connectivity - WiFi and Cellular
The Sensation includes 802.11b/g/n WiFi and uses a Broadcom WLAN stack (likely the ever-popular BCM4329 yet again), I saw it connect at 72 Mbps just like I’m used to seeing for single spatial stream smartphones running 802.11n. Actual WiFi range is good, and largely on par with the iPhone 4 and other devices widely accepted as being decent. I watched Sensation RSSI hover around plus or minus 1 or 2 dBm from an iPhone 4 throughout my house connected to an 802.11n AP.
What’s odd about the Sensation is that to get those numbers required holding the phone portrait. The Sensation doesn’t appear to have a very isotropic antenna, as holding it screen-up yielded less signal than if I held the Sensation with the display facing me.
Before (left) and after (right) having the top portion cupped in the hand - note RSSI changes by 15 dB.
Back with the Desire HD, there was some outcry about the device having its own form of deathgrip, thanks in part to the WLAN antenna being integrated into the battery door and surrounded by metal. Things have improved somewhat with the Sensation, but you can still drop 15 dB by cupping the top plastic area where the WLAN antennas are patterned.
Throughput is likewise decent in our 100+ MB PDF local download test, though it isn’t as super as some other phones of late.
Cellular connectivity on the Sensation is courtesy of the MSM8260’s onboard baseband, which is HSPA+ capable and supports HSDPA 14.4 / HSUPA 5.76 on 900 / 1700 / 2100. There’s quad-band GSM/EDGE support for 850 / 900 / 1800 / 1900 as well. Remember that the x in MSM8x60 denotes which mode is present - 2 for single mode UMTS, 6 for multi mode UMTS and CDMA. The baseband on the MSM8260 is effectively the same modem as what was in MSM8255.
I ran 249 tests on the Sensation connected to T-Mobile’s HSPA+ network. On the Sensation, that shows up with a big bold “4G” logo. When you’ve fallen back to EDGE you get a sans-bold “2G,” and on GPRS just a G. I don’t think there’s much of an argument to be made for HSPA being “4G” until most of the carrier is running dual carrier HSPA or MIMO. Even then, without much faster backhaul and compatible phones, things aren’t going to change much. T-Mobile’s coverage isn’t exactly perfect in my area, but I ran tests whenever I saw HSPA in both Tucson and Phoenix Arizona, and Los Angeles California. Those are all HSPA+ enabled markets, and since the Sensation isn’t a 64QAM device it isn’t like things were faster in one than the other.
There’s a clustering of results at the bottom between 0.5 and 3 Mbps, but there are impressive tests going all the way up to just shy of 10 Mbps. I’ve seen just over 11 Mbps tethered and parked within close line of sight to a T-Mobile cell site. When signal is good, T-Mobile will get you an awesome occasional 9-10 Mbps. When you’re not within line of sight to the tower, (in average coverage), you’ll get that 1-2 Mbps or so. Keep in mind, this is when you’re actually connected to HSPA+ — I did spend considerable time just stuck on EDGE in parts of some markets, and likewise in the wrong parts of town and my house. T-Mobile seems to be pushing the adoption of higher and higher HSDPA and HSUPA categories on its network, including moving to higher order modulation and dual carrier, which deserves applause, but at the same time more cell sites seem a necessity.
The most sensitive cellular region on the Sensation seems to be at the bottom of the back case, which is what we’re used to almost always seeing for smartphones because of how the FCC tests. In addition, the Sensation seems to have Rx diversity, with one antenna up in the top plastic region, one at the bottom. The good bits of the FCC reports are still locked down until around October, but there honestly aren’t too many question marks to fill in with regards to the Sensation.
| Signal Attenuation Comparison in dB - Lower is Better | ||||||||
| Cupping Tightly | Holding Naturally | Holding in Case | On an Open Palm | |||||
| HTC Sensation | 15.0 | 10.0 | 8.0 | 0.0 | ||||
| Samsung Droid Charge | 10.0 | 10.0 | 5.0 | 0.0 | ||||
| HTC Thunderbolt - LTE | 5.3 | 2.5 | - | 4.4 | ||||
| HTC THunderbolt - EVDO | 6.5 | 0.8 | - | 7.2 | ||||
| Verizon iPhone 4 | 16.5 | 15.5 | 9.0 | 7.9 | ||||
| LG Optimus 2X | 13.7 | 9.3 | - | 5.9 | ||||
| Nexus S | 13.3 | 6.1 | - | 4.3 | ||||
| Droid 2 | 11.5 | 5.1 | - | 4.5 | ||||
| BlackBerry Torch | 15.9 | 7.1 | - | 3.7 | ||||
| Dell Streak | 14.0 | 8.7 | - | 4.0 | ||||
| Droid X | 15.0 | 5.1 | - | 4.5 | ||||
| AT&T iPhone 4 | 24.6 | 19.8 | 7.2 | 9.2 | ||||
| iPhone 3GS | 14.3 | 1.9 | 3.2 | 0.2 | ||||
| HTC Nexus One | 17.7 | 10.7 | 7.7 | 6.7 | ||||
Attenuation from holding the phone isn’t a big deal with the Sensation. If anything, I think HTC is due for some well-deserved kudos for trying something different with its latest crop of antenna designs. I’m impressed with how the Desire HD maintained a metal package and hid antennas in plastic RF windows that double as covers, and the Sensation is even more interesting with them being built into the two plastic triangles which snap into the back cover. Of course, if you take the metal exoskeleton off, you lose all signal, but that’s to be expected. I’ve actually taken the cover completely off sometimes and seen EDGE hang on.
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Brian Klug - Friday, July 1, 2011 - link
We're still waiting for an SGS2, hopefully we will get one soon from Samsung USA and be able to compare it in its final form.Take care,
Brian
sam46 - Friday, July 1, 2011 - link
brian,this is one of the few reviews which have praised sensation.but in my view your review is the best.
i am saying this because i believe that unlike other reviewers you not only test mobile phones in your lab but also use them as in daytoday life as a normal user.this gives a better impression of the devices which you review.
many reviewers have given more praises to sgs2 than sensation.they have based their views with the limited time which they had with the devices that too in their testing labs.but i believe that in real world usage sensation makes more sense than sgs2.and this has happened before with their older brothers that is desire and sgs.the reviewers had given more praises to the sgs but the actual users prefered desire over sgs.
though samsung devices looks great on paper,users get frustated with their handsets.
apart from htc in my view hp makes better handsets.lately they are catching up with the hardware but their design sucks.for example take pre3,may be its design makes more sense while handling and using it,but its looks are not good enough to make a good impression.now that they are putting single core1.4ghz processor in pre3,but still they are behind the competition of dualcores.but i do believe that pre3 will give a tough competition to all the dual core phones in terms of speed and performance because of a very light os that is the webos. webos is unarguably the best os out there which is slick and fast,easy to use interface,better management of memory,provides true multitasking,provides a great
feature like just type, and a best notification system.webos is very very light when compare to ios and android,so i think it doesnt need a dual core processor and 1gb of ram.it can perform better than ios and android even with a single core processor and 512mb ram.but hp needs to work on better designs to give a better impression of their devices.
by the way,congratulations brian for this great article.pls tell me what do you think of the observations i made above.
StormyParis - Friday, July 1, 2011 - link
You need to be specific: what hidden drawbacks do Samsung's phones have ? and what hidden qualities, HTC's ?Disclaimer: my current HTC HD2 is the first phone I'm happy with in ages. I had junk from Motorola, LG, and Nokia before that had serious design flaws, plenty of bugs, bad support... or rather, all of the above. My HTC just worked from day one, now it's started a second life under CM7, and I'm very happy with it 2 yrs on.
I was looking foward to buying a Sensation. But the lighter weight, on the whole, better screen, and better moddability f the GS2 are on the verge of convincing me to buy that, instead.
sam46 - Friday, July 1, 2011 - link
Read the review of droid charge by brian klug.He clearly mentioned that samoled+ has some serious problems such as overheating,yellowish tint and oversaturated colours.It is the slimmest smartphone in the world,but according to many users sensation is better to handle.Due to its wait and built quality it feels solid in the hand.And also remember that sgs2 is made of plastic.To know what drawbacks samsung phones have you need to do some googling.Just search for
defects of sgs and sgs2.
bigboxes - Friday, July 1, 2011 - link
Please capitalize your sentences. It was quite the chore trying to read your post. If you want to be taken seriously you need to remember to correctly use those writing rules you learned in school.sam46 - Friday, July 1, 2011 - link
sorry,i am from a non english speaking country.despite that i can write pretty good english,isn't it?SimKill - Monday, July 4, 2011 - link
Do you still not capitalize stuff in your language? I'm a non-native English speaker too, and my language doesn't even have capital and small letters. I still make an effort to write well so that I can convey my message as clearly as possible.sam46 - Monday, July 4, 2011 - link
I will :)Speed3mon - Sunday, July 3, 2011 - link
bigboxes... gAyVisual - Friday, July 1, 2011 - link
Wait, what? Having white appear as red is accurate color now?BTW the Galaxy S II gives users a few choices of color calibration even with stock FW. And just wait and see what the hacked ones do...