I looked & looked to review the T-Mobile version here on amazon, but could only find the Unlocked version to review. So with that in mind, lets get started:Let me start off by admitting up front, based on my brief stint working for AT&T, I was NOT a fan of LG phones. Not in the slightest. In fact, some of the worst phones I''ve EVER seen were LG models (however, in the spirit of honesty, I can''t comment on LG models sold on the Verizon or Sprint networks). I have always wanted the Pure Google Experience, but for one reason or another, the opportunity never really presented itself...until Verizon lied to me about keeping my unlimited data plans, took it away from me, and oh yeah, the fact that they charge OUTRAGEOUS sums for their service, well, it bugged me once too often and I jumped ship.I used to believe that once you''ve had LTE service, you''d never go back...that is until I had the AT&T Galaxy Note, and where I live, we are blanketed with their low-tier 4G service, and no LTE. Verizon literally covers almost my whole state with LTE service, however. The difference between that low-tier 4G & LTE--at least as far as how I use the internet, was rather minimal, or at least not so significant that it bothered me. Now yIn my area, T-Mobile happens to cover the area rather sporadically with their HSPA+ service, which they bill as ALMOST LTE download speeds, which is pretty good--IF you can get the service. Unfortunately, the 4G is SO spotty, that taking just ONE step in any particular direction can mean the difference between full 4 bars of 4G and NO 4G whatsoever. A rather large portion of my town has ZERO HSPA+ service...something I did not know until after I joined up with T-Mobile. Oh well.I did a great deal of research about the Nexus 4 (unlike the poor reasearch I did about coverage...) before making my decision, and after all is said and done, I am VERY impressed with the phone. At first I thought something was wrong when I went into the app drawer, but it dawned on my quickly that because its Pure Google, I don''t have to be weighed down by all the TONS of bloatware that ALL carriers dump into their phones. Color me very happy indeed. The phone itself is very nice, feels great in my hands--however, the rather large b-u-u-u-t that accompanies that statement revolves around the fact that next to the iPhone 4 and 4S (the two most easily shattered phones ever designed in history), the Nexus 4 is remarkably easy to break as well, considering how much glass its packed inside of. I hear that even the Gorilla Glass 2 front is prone to breaking as well. No matter how you slice it, you simply MUST purchas a case to protect this investment or the inevitable WILL happen, it always does.Performance...? Awesome. Flawless, to be exact. Everything is crisp and QUICK. Thanks to the quad-core processor, things fly at lightning speed and I have yet to see any kind of hiccup...which is very nice. The scrolling with Jelly Bean is fluid and very buttery, like they said it would be. Nice to see they were right. From the lock screen''s new additional widgets, to the wonderful cool options of Google Now (think iPhone''s Siri only SERIOUSLY better), there is a LOT to like.One thing I do a LOT of on my phone is text...so the keyboard is critical to me. Adding its own gesture/swype-like keyboard was a nice feature, but I got to missing Swype...enough so that I went to their website and downloaded it myself (had to jump through a few hoops to actually get it to run, but it was worth it). The whole speech-to-text function has received a GIGANTIC overhaul...you''ll either love it or not. Personally I think its a nice step up. I really think if you have a phone with Jellybean 4.2.2, take advantage of Google Now. If you don''t you are missing out. Seriously.One other thing I REALLY like is the addition of Phonetic Spelling to contacts. The truth of the matter is this, we ALL know someone with an odd spelling to their name, or last name that speech-to-text function never seems to recognize, so this function really allows you to be creative in phoneticially spelling that name, and allowing Google Now to search it easily on your phone. It may be an easy and simple thing, but it was a VERY welcome addition if you ask me.The camera seems to have undergone a nice overhaul, too. It looks entirely different now, but not too difficult to navigate through. I haven''t tried Photosphere yet, but I''m anxious to give it a shot. What I REALLY do like is the photo editing feature that makes cropping, Coloring & regular editing fairly simple and intuitive. Haven''t tried to video anything yet, but I''ll post my results when I do.What has bugged me was how un-impressed I am with the battery. Coming from the Droid Razr, with a rather anemic 1750 mAh battery to the Nexus and a much larger 2100 mAh battery, I truly expected a great increase in how much I could use my phone...alas, I was mistaken. I really believe that I could get about 30% more usage on my Razr than with the Nexus. Pretty disappointing considering the difference in battery size. I''ve also owned several smartphones over the years, and heavy internet browsing generally heats up the phone to a certain degree. Some phones suffer from this more than others, but I have to say, the virtually all-glass Nexus heats up to an uncomfortable degree, enough so that I once placed it on my knee while wearing shorts and it almost burned me. Sorry, but this is unacceptable. Maybe a change will come soon with an update, which, thankfully with Google, should come fast and regularly. Otherwise, I may take it back to see what the deal is.I really like the position of the buttons. Not bothersome like on my Razr. I HATED having the volume buttons directly under the power buttons. The number of times I pressed the up volume instead of the power key and wondered why the phone didn''t turn on (or off)...well, its enough to drive you nuts after the hundredth time, trust me.I am also impressed with how thin the phone is. Just barely thicker than the Razr (which is truly the thinnest phone around) and yet overall, no bigger. Set the phones side by side and I was very happy with the fact that my screen is a full half-inch bigger, and yet the phone isn''t any larger overall. Nice.The screen--while true HD, well ISN''T nearly as vibrant as I expected it to be. I may be in the minority here, but I just expected it to pop more like a Super Amoled screen does. With that being said, the screen IS beautiful, and probably renders colors more natural-like than Amoled screens do, at least I can be honest with that. I just personally prefer the over-saturated colors I got with Amoled phones. Oh well.Call quality and speaker functions were exceptional, too. Didn''t drop any calls, and I was impressed with the clarity and loudness of the speaker on the back. By the way, the phone has dual mic''s so you have the noise canceling function that most high-end smartphones have been including for a few years now.All things considered, I am VERY happy with the phone, other than the small complaints I registered above. Overall, I have to say this is probably the best Android phone on the market (unless you MUST have LTE)...at least for the time being. I realize that will change any moment now, but such is life in the world of advancing electronics. Look for updates soon...***UPDATE***Totally forgot to include this in my initial review: the LED light which at first I thought was absent entirely, well, it turns out that the Nexus 4 really DOES have an LED indicator light...unfortunately, it isn''t a bright one, and its at the bottom of the phone (in the center) instead of at the top as per most smartphones. I don''t really care where the light happens to be, just that the phone has one. The original Galaxy Note didn''t have one at all, which I felt was a GIGANTIC Fail on Samsungs part, but oh well. The LED on the Nexus 4 has to be enabled in settings, as it comes out of the box disabled--which I find a bit puzzling. On top of that, mine never really seemed to work worth a darn--until I downloaded an app which allowed me to access it and therefore adjust it for how quickly it blinked and what color. Again, it seems sporadic as far as how easy it is to get the thing to properly work, but at least it does. Honestly, the fact that it doesn''t work ALL the time is a fairly big Oops on LG''s part. This technology is pretty standard in even ultra-cheap phones and smartphones alike, so the fact that this one only works so-so is a problem with design. I''ve noticed forums online which speak to this in-depth so it isn''t just an isolated incident, fyi.Also, I had owned an Android-based Bluetooth keyboard which I LOVE and used regularly on both the Galaxy Note & the Droid Razr without problem, but unfortunately, will NOT work on Jellybean 4.2 and above. It''ll pair no prob--but there is no way to get the keyboard to actually WORK, and trust me, I''ve read as much as I believe you can on the subject and still nothing. Honestly, I believe a work-around will arrive probably rather soon via an OTA update, but in the meantime, I have this nice keyboard which is on my shelf now collecting dust as it is unusable for the time being. Another big Oops if you ask me.I really like the screen''s responsiveness. MUCH better than ALL previous Android devices. Even close to the very edge, where I had noticed a lack of sensitivity on all other phones I had used. Nice going, LG.The Nexus boots up from being turned totally off in a remarkably short amount of time--easily 75% faster than any other phone I''ve used (with the possible exception of the HTC One X, which still may be the fastest available--at least that I have personally seen). Nothing was slower than the Blackberries, but this was a nice and VERY pleasant surprise. Maybe those extra two cores help in that matter...Camera is impressive as well. Clearly better than all other models I''ve used, again, with the possible exception of the HTC One X, which has an absolutely STELLAR optical device. Honestly, I''m not a photographer by trade, but the Nexus 4''s camera certainly seems to be the equal of the One X in pretty much all areas other than color saturation. The addition of photosphere is just brilliant. You simply have to try it. I really love this feature, even though its more novel than anything else, it IS pretty dang sweet. And I REALLY continue to love the photo editing features which come with Jellybean. Nice touch, Google. I keep wondering when we''ll start to see megapixels larger than 8 become standard on these phones. 8 has been around for an eternity (as far as electronics are concerned) and I''m thinking a 10MP camera really ought to be the norm by now--but what do I know, huh?***UPDATE #2***As I stated above, I downloaded Swype simply because in my experience, it has the best function which I prefer at understanding accurately what I''m trying to write. I recently tried Swiftkey Flow (trial) and found it to be pretty much just as accurate, and I even like the customization--however, I see no reason to PAY for the full version (because I''m a cheapskate, honestly) when Swype will do what I want for FREE. With that being said, let me admit that I like to change things up quite a bit on my phone, the background, widget layout etc. and once in a while, I like to switch keyboards just to make my experience varied. I tried to go BACK to the stock Android keyboard (which really IS pretty well done), and no matter what I did, I couldn''t get it enabled. I spent the better part of 2 days trying to figure out what was wrong. I hadn''t deleted it, so where was it? Finally, out of sheer frustration, I kinda gave up when it hit me. I went into settings, down to apps, and searched for it and voila! There it was. I have no idea HOW or WHY, but it had been disabled. Don''t get that at all. I didn''t do it, but at least it was an easy fix to re-enable it. The gesture typing (as they are calling it) takes a bit to get used to since as you trace along the screen a little box follows you with the predictive text it THINKS you''re trying to write. It IS correct more often than not, but I have to say, it DOES take a bit to get used to that little thing following your finger around. You can turn it off, by the way, but once you get used to it, I found it actually kinda useful. Let me say this: if Swiftkey Flow was free, I''d keep it in a heartbeat. LOVE its layout and convenience. I dare say its the best Swype-like keyboard I''ve seen to date. Don''t be fooled, there are a bunch in the Google Play store to choose from, but while some spend a great time in making the keyboard LOOK good, they spend much less time making it accurate. I won''t name names because what I dislike, YOU might actually prefer. Everyone is different, and I recommend trying it yourself before making decision...don''t just take my word for it.***UPDATE #3***The longer I have this phone, the more I really like it. I cannot stress, however, how important it is to get a case to protect it. Being virtually all glass, it certainly FEELS like quality--unfortunately, it also feels rather slick. I''ve noticed it slipping on the counter when I placed it on top of a stack of items that was slightly at an angle. Slippage that wouldn''t have happened with any other phone I''ve personally owned, and definitely not with a decent case protecting it.Google Now is simply awesome. I''ve watched several video''s and read many articles comparing it with Siri, and almost all have them neck-and-neck except for a few which were ridiculously biased towards apple. They each have their own strengths over the other. If you like snarky responses, Siri is your gal. But if you want a service which will (over time, of course) recognize your schedule, commute time and other things you do regularly, and offer you with simple solutions, such as knowing that you have an appointment at 5, but the busses in your area are running slow, or traffic is backed up due to an accident, Google Now will send you a reminder to leave a little extra early. Siri not only doesn''t, but cannot pull this off. The honest truth is that the differences and preferences are pretty much personal, and in no way mean one is inherently better than the other. I found Siri to be a great novel idea which--after a couple months, very few people regularly used. However, Google Now (IMO) offers things to me as help even if I don''t ask it to. I can choose to ignore them or heed the advice. Its up to me. Just points to ponder.I have changed my opinion on the clarity and color saturation of the screen (for the most part). I simply wasn''t using a screen wallpaper which allowed the phones color to really shine. I also had the screen brightness as low as it would go. Turn it up and you''ll see a world of difference.Screen responsiveness remains very good and while I''ve personally used Verizon''s 4G LTE (as well as AT&T''s) and I am VERY impressed with T-Mobile''s HSPA+ speeds. I won''t place it up with LTE, but I must admit (when I actually HAVE the service) that its mighty quick. With a good signal, I''d say its 85% as fast as LTE. VERY impressive, T-Mobile. Now hurry up and get those two other towers in town so I''ll have a decent signal all over my small town. One other thing about T-Mobile''s service in my area, its either their 4G or Edge service, no 3G at all. Talk about a MAJOR differnce. Holy COW! I may end up moving to Vegas before too long and I know my service will work great with the coverage they have down there.Google went to work on Jelly Bean with Project Butter to help with how the screen fluidly switches from one to the next, and no matter how tiny that may seem to you, the end result is pure bliss. It works...really, REALLY well. Not only do I have no complaints, but supreme kudos to Google for pulling it off and in VERY nice style. No longer can my iOS friends claim better screen transitions. In truth, this is something that Android has had to play catch-up on for far too long. It SHOULD have been worked out back when Froyo came out several years back. But at least its here and works wonderfully.Google Now just keeps getting cooler to me. It "Learns" your life and reacts accordingly the more you use your phone and the longer you have it. I have added a Google Now widget to my homescreen, and it just popped up to tell me my commute home would take a bit longer than usual due to traffic issues on the route I normally take. A few minutes later, the time was changed again as the traffic became even worse. I didn''t ASK Google to give me that info, but since I allowed Google that ability in settings (you have to give it permission, otherwise Google Now is only a nifty tool, more like Siri) it just gave me that info right away. If I have appointments, it looks ahead to see if I need to leave sooner to make the appointment based on traffic, or if I take the bus it''ll remind me to leave sooner based on those perameters as well. It LEARNS...Siri does not. For that alone, GN beats apple. No doubt that will change with the newest iOS update scheduled for later this year. But having a Nexus phone assures me that no matter how much iOS improves, Google will, too and I''ll continue to receive the FIRST updates when they become available.Another cool feature of Jelly Bean is Smart App updates. In a nutshell, before when an app I downloaded received an update, I would have to re-download the entire app all over again from the Play Store, and within it would be the small update. Even IF the actual update was only 1mb in size, but the entire upate was 22mb''s...you''d seriously use up bandwidth as well as precious data (for those not on unlimited plans). With Android 4.2 when an app needs upating, you download ONLY that part of the app which is new, therefore saving a great deal of bandwidth AND data usage. This is not only smart, but freakin'' genius if you ask me. I''m kinda surprised that Google doesn''t shout this from the rooftops because its a pretty big deal for those who have data limits and no regular access to WiFi like some people are fortunate to have.I''ve tried several different Home Screen Launchers since I got the Nexus 4 and always seem to just go back to the stock Launcher. Don''t get me wrong, some of the newer apps are simply brilliant, and the 3D effects are just awesome. But truth be told, these days that just does''t cut it for me. I just want my phone to WORK. The less stuff I add to it, I find it just works better. Thats just me, though. I understand that may not be for everyone. To each his own, right?One more thing: I''ve recently discovered the Tasker App for Android. Holy freakin'' COW! The closest thing I''m aware of that is similar is something Motorola has started to add on their newer devices--but it can''t do a tenth of what Tasker can do. It is TOTALLY worth the cost (and so far, the ONLY app I''ve ever paid for). You can set your phone to turn up the brightness when opening up Google Chrome, and it''ll automatically dip down to whatever setting it was before (you have to NOT have it on Automatic Brightness for this to work, however). I''ve set my GPS to auto turn-on the moment I open the Maps app, and shut off as soon as I exit. It may sound less than interesting, but trust me, its amazing how helpful it can be. If I receive a phone call and I want to silence the call, I simply turn my phone face down, the ringer will automatically shut off. Now, keep in mind this app takes a bit to get used to and I doubt many will ever truly use it to its full potential (yes, it can do THAT much stuff), and I recommend looking at the YouTube instructions which will help immeasurably on how to set it up and give you an idea--it''ll help more than you know.***FINAL UPDATE***After a bit of a struggle, I received and downloaded update 4.4 Kit Kat a few days ago. First off, I gotta say I''m disappointed. Not with how the phone is operating, but with what we were TOLD to expect, and with what this update actually delivers. I''ve watched several YouTube videos with early versions on the N4 as well as Google''s official tour of what to not only expect from the N5 but the official reviews after it was initially released. A LOT was placed upon the new & improved Transparent home screen. Did that come to the N4? Nope. Also, the swipe to the left to get Google Now also wasn''t included. Now why wasn''t all that made clear from the absolute BEGINNING has been a real disappointment. At least we would''ve known instead of waiting this whole time only to find out AFTER the download instead of expecting it the way Google SHOULD have handled this debacle. And the fact that Verizon''s Moto X got the update BEFORE ANY Nexus device was not only an insult, but a slap in the face, too. Yes I understand that Motorola now being owned by Google makes their products kinda, sorta Nexus-like. Yes, I know. But regardless, that doesn''t make them Nexus devices. Period. Even if my phone had received it a day BEFORE they released it, I still would have been surprised, but a lot less perturbed. These are the reasons why people like me purchased the Nexus in the first place is because we were lead to believe that WE''D get those updates FIRST. Not so any longer. Also, after positioning 4.4 as for ALL--and bragging how it uses the least amount of RAM of most of the earlier versions of Android and yet NOT making it available for the Galaxy Nexus could be the biggest insult of all. It''ll run on as little as 512MB of RAM and yet you won''t allow the GNexus to update? WHY?? That alone makes it NOT the OS for everyone. Oh, I''m sure someone will make a modified version available for the GNexus probably soon, but the fact that it wasn''t issued by Google itself is an Epic FAIL in MY opinion. Just sayin''.The icons are bigger under 4.4. Quite a bit actually. And I''m NOT a fan of that. Sure my screen is decent sized, but even with such limited real estate, I hate for too much space to be used up by simple icons which CANNOT be re-sized or moved. Some may not be bothered by this at all, but I felt it was worth mentioning all the same.For those who have the N4 and STILL want the N5-like experience without actually having to buy one, go search for the ''Google Experience Launcher'' (as I write this, you cannot find it in the Play Store). It will in fact give you the transparancy home screen, the swipe to left Google Now as well as the ability to simply speak "OK Google" while on any home screen to launch Google Now. Keep in mind that by enabling this feature, because the N4 wasn''t designed for this function, it WILL use a bit more juice than usual (fairly noticeable if you ask me). You can turn the feature off and retain everything else, but its worth noting all the same.Google Now is more fluid and the speech recognition seems greatly improved. Sure, some words are problematic, but that''s life when using technology (and I might add aren''t any easier to speak using Siri, either). I''ve noticed a nice improvement overall with it. VERY happy with that aspect. For me, the new phone functions are simply awesome. MUCH better than before. I''m really liking that part of Kit Kat A LOT. Still a lot to like about the N4--but the battery life is still pretty miserable. I WAS considering getting the Nexus 5 seeing as it was supposed to essentially be the G2 without all the LG bloatware and UI crap. But the battery on the G2 is massive compared to the rather anemic one they put in the N5. Maybe that was for budgetary consideration seeing as they are selling it for about the cheapest price you can purchase a first class smartphone these days. Oh well. I just may go with the N5 after all...if not that then maybe the Note 3--which I really like. I just want to see Kit Kat made available to that before I take the plunge. I just loved my first Note. Size DOES matter, and for me, it was awesome. SO hard to go back to anything else without that large screen. I miss it big time.