• 2.0 out of 5 stars


    Paired with MacBook 12" 2016 m5. First unit had faulty usb-c cable (not a standard cable, took ages to get replacement, finally swapped out unit). Both first and second unit have flickering issue (intermittent flash to black) -- wifi interference does seem the likely culprit as it improves when moved further away (NOT JUST AN ISSUE WITH 5k Display). Repositioned the unit but it's not where I want it...Will likely return. Too bad because it's a nice looking screen and when used as second display gives me enough room (thought I'd be disappointed with the size). The mid-level 2016 MacBook can just about keep up with the display in terms of lag.

    9 of 11 people found this useful

  • 1.0 out of 5 stars

    Intermittent Blank Screen

    This Monitor + New Macook over USB-C, Intermittent Blank Screen throughout the working day. Would not recommend, Apple in denial about the problem. Only settles down on the rate of interference from a few times an hour to once/twice an hour after a reboot.

    2 of 3 people found this useful

  • 5.0 out of 5 stars

    Tried both 5k and 4k. Kept the 4k

    I actually purchased both to try them out side-by-side in my home office. The 5k had issues. Flickering, on off at will..on and on. The 4k just worked as advertised...smaller footprint, lighter and "cooler" as well. NOTE: (I will add this important fact) Frustrated, I went to Apple and purchased a Belkin cable (green and white box) and re-installed the 5k monitor with the Belkin branded cable. The replacement cable fixed all the issues I was having with my 5k monitor! Go figure.

    In the end with the new cable, the 5k functioned as great as the 4k. It was the weight and footprint (and money) that caused me to keep the 4k.

    14 of 15 people found this useful

  • 5.0 out of 5 stars

    Very pleased based on first three days in service

    Paired one LG 4K UltraFine with a 15" late 2016 MacBook Pro 2.7GHz i7 Radeon Pro 455 with Touch Bar (standard configuration machine) running Sierra 10.12.3. Except for when booting the Mac, I always keep the lid closed during use. Haven't connected any peripherals to this monitor's USB ports as yet.

    For my purposes, this monitor is great. Beautiful "retina" image quality. Attractive flat black finish on the minimalist bezel and stand. Stand is rock solid, absolutely no monitor wobble sitting on my stable desk top, and allows easy height and tilt adjustments.

    Have not experienced any wake from sleep issues, nor screen brightness adjustment issues. Brightness adjustment buttons on my previous generation Apple bluetooth keyboard work fine with this monitor. My 15" MBP has maintained a constant 100% battery charge during use through the single USB-C cable connected to this monitor. As other reviews have noted, volume of the built-in speakers does go abruptly from low to high at the low end of the volume adjustment range unless option-shift is used to make fine adjustments.

    The LG Screen Manager app, downloaded from the LG web site, is useful for quickly tiling up to 4 open windows in a variety of layouts, and also allows the monitor to receive automatic updates from LG.

    7 of 8 people found this useful

  • 2.0 out of 5 stars

    Bad shielding

    While the 4K has not been in the news much, like its bigger 5K sibling, it has bad shielding. I use a standup treadmill desk. While I am on the treadmill, I can build up static electricity. This causes the the display to randomly blackout for a fraction of a second. When I step off the treadmill it has no issues. If I ground myself while on the treadmill, the display works as expected. This was not a problem with my old trusty 30" Cinema display.

    10 of 18 people found this useful

  • 1.0 out of 5 stars

    The biggest disappointment ever!

    I bought a couple of LG UltraFine 4K Displays.
    One of them was broken. Very frustrated because of zero quality control.
    Today I had got replacement. And do you know what? The new monitor has totally different color temperature! Color profile exactly the same, but one monitor has "white" shade of white color and another one has "yellow" shade of white color.
    Have you promised P3 99%? You even can't provide the same color temperature.
    Totally disappointed, have to return.

    26 of 30 people found this useful

  • 2.0 out of 5 stars

    Great Display But Faulty

    Visually, the display is excellent and a one-cable-does-it-all (USB-C) makes for limited clutter and a nice minimalistic work space, however I experienced several other issues which resulted in me exchanging and then ultimately returning the monitor all together.

    The first issue I had was intermittent connectivity with the built in speakers. Sometimes they would work fine, other times the speakers could not be recognized by my MBP. After hours with customer service (both LG and Apple), no resolution was reached. I exchanged the monitor for another and with the second monitor the speaker issue was fixed. Unfortunately, with the second monitor I experienced issues with a non-responsive computer after waking it from sleep mode that required unplugging then reconnection of the USB-C cable from the monitor to the computer.

    Overall, I was dissatisfied with this monitor and would not recommend it. Save yourself the time and frustration and look for another 4K display.

    16 of 20 people found this useful

  • 1.0 out of 5 stars

    Jumped the Shark

    I bought the new MacBook and bought two of these monitors. They're terrible. Most of the time they don't connect properly when you plu them in .

    24 of 36 people found this useful

  • 4.0 out of 5 stars

    Almost a perfect match for MacBook 12" 2015

    I purchased the LG UltrFine as soon as it was announced based on Apple working with LG to produce a display matched to the performance of the MacBook 12". I boot my MacBook, wait for it to complete, enter my password, close the lid and go to work. I use the Magic Keyboard and Mouse working mostly in Adobe Illustrator in conjunction with the LG Ultrafine 4k display set at about 75% screen brightness setting. I have experienced all the positives listed in this forum.

    Everything functions fine. Most times I Shut Down the MacBook completely. Always restarts fine after a complete shutdown.

    However, when I put the MacBook to sleep and awaken it some time later, the LG display brightness is almost black intermittently. The display brightness slider is almost at the minimum setting. I have to do in to the Preferences and manually move the brightness slider back to the 75% position.

    I have referred this issue to an Apple advanced support person. I received an Image Capture app to capture files and forwarded them to Apple for evaluation when the display was in this dar mode. So far, there has been so solution.

    I just update macOS from 10.12.2 to 10.12.3. Problem still exists. I also reported this issue to LG. They were no help.

    With others experiencing similar issues, I think it is about time that Apple finds a fix.

    6 of 6 people found this useful

  • 3.0 out of 5 stars

    Display quality is great, software running it needs major work

    The display quality is wonderful, but the software running it has two major bugs that need sorting out. The first bug is unexpected shutoffs. While exiting full-screened apps or videos, sometimes the display goes black and I have to unplug it and plug it back in to get it to turn back on. The second bug is the volume control. The display's speakers jump up to about 40% total volume within the first two volume increments of the Mac's total volume capacity (16 increments). This makes fine-tuning the volume extremely frustrating as it jumps between "Barely Audible," and, "Everyone Within 50 Feet Can Hear," between the first and second volume increments. Turning it up past the 4th increment blows the audio out. As a temporary solution, I've resorted to holding Option and Shift while adjusting the volume to reach increments in-between steps. I hope a software update is pushed to either the display or Mac OS to fix this issue; it's very annoying.

    10 of 12 people found this useful

  • 4.0 out of 5 stars

    Stunning Display

    I spent ages trying to decide in advance if this monitor would be too small. I took the plunge and I am glad i did. The image and text clarity is as good as on the 13 inch MacBook Pro it is attached to. Being older I had worried that the default scaled resolution might make text appear too small but it did not at all. The text is so pin sharp I can work comfortably for extended periods.

    Brightness is just right and colours are rich and sumptuous. YouTube 4K content looks amazing as does HD. For the first time I have been able to edit 4K images shot on the phone.

    Physically the monitor is sturdy with good adjustment. The USBC connectors could fit better perhaps and the limitations of usb2 speeds is well documented. I have limited peripherals to a lightning to usbc cable.

    I have experienced a wake from sleep issue on occasion though. I have not found a pattern to it. For me it's not a deal breaker but a fix would be nice.

    3 of 3 people found this useful

  • 1.0 out of 5 stars

    Useless with a Macbook Pro with touchbar

    The failing to wake from sleep issue has made this useless. The entire reasons i bought it was for the convenience of being able to leave my MacBook plugged in and charging via the single cable but every time i open the MacBook I have to unplug and plug the monitor back in, sometimes 5-6 times before it wakes up.

    Lately its also been making my macbook crash and re-start if I leave my computer open instead of closing it and putting it in clamshell mode. When i come back to wake it back it up, itll crash. Does not happen when not plugged into the monitor.

    36 of 42 people found this useful

  • 5.0 out of 5 stars

    Is Working Fine

    I bought the LG UltraFine 4K Display over a month ago. It has been working great and the sound quality is very good. I use it with a 2015 MacBook and have not had any problems.

    7 of 9 people found this useful

  • 4.0 out of 5 stars

    4K and 5K Ultrafine Display Cables are different

    I purchased a 4K ultra fine in December for my 2015 MacBook 12" which I use now at home and ordered a 5K for my office where I use a 2016 15" MBP. I had been testing the MBP with the 4K and after disconnecting simply plugged the cable from 4K to 5K. All worked well.
    Took my 4K home and plugged into the MacBook 12 using what looked to be an identical cable.
    I was getting charge from the screen, however the 4K screen appeared completely dead.
    Swapped the cables over and all good.
    Disappointing however that there was no instruction manual suppled in either package and finding the manuals was like a needle in a haystack.

  • 2.0 out of 5 stars

    Not ready for primetime

    These displays are gorgeous, but they are so frustrating to use with the new MacBook Pro 15-inch with TouchBar that I wish I had waited until the issues were sorted out before buying them.

    As mentioned in numerous other reviews, one of the two consistently fails to wake up from sleep. The one that does wake up has such poor performance (skipped frames) that it's not usable. You have to unplug and re-plug the displays from the MacBook each time it goes to sleep. If that weren't enough, in the latest macOS beta the brightness of both displays is reset to the lowest level whenever the MacBook goes to sleep. The keyboard brightness button only effects one display, so you have to open Display Preferences in order to restore the right brightness levels. The whole thing is kind of a mess.

    17 of 19 people found this useful

  • 4.0 out of 5 stars

    Beautiful display. Sound control needs improvement.

    Setup: 4k monitor with a late-2016 MBP (non-touchbar).

    Fortunately, in 3 weeks of daily use, I haven't experienced any of the sleep/wake issues others have reported. (I do need to remember to put the laptop to sleep before cutting AC power to the monitor, else it's video chaos upon powerup/wakeup.)

    What most needs improvement is the scale on the audio volume control. At the lower end, there's way too little resolution. Often, the level I'd like is more than one dot and less than two dots, so the sound is almost always a little too soft or a little too loud. At the upper end of the volume control, there's needless resolution, i.e., going up or down one dot makes little perceived difference. Apple, surely you know that hearing is [approx] logarithmic, not linear!

    Another audio issue: At the uppermost volume levels, the sound distorts, i.e., is unusable, so why bother allowing it to go that high? Even at mid-levels, music with bass makes the display's case rattle (intolerable to anyone sensitive to such things). Once this display is on display in the Apple store, I'll find out if the rattle is a sample defect and, if so, ask for an exchange.

    In the big picture, it's the small picture that's so great. I'm not aware of another 4K monitor this pleasingly compact. On my tiny desk, it's a notably more comfortable fit than was the 24" display it replaced.

    8 of 8 people found this useful

  • 4.0 out of 5 stars


    Works well with 2015 12 inch Macbook. However, although there are three USB-C ports it can only handle having one external HD; not enough juice to drive two simultaneously. Another small but annoying problem: when put to sleep, it will often wake spontaneously.

    Otherwise it is a solid match for the Macbook.

    2 of 2 people found this useful

  • 4.0 out of 5 stars

    The perfect match to the 13" Pro w/ TouchBar

    I was hesitant to purchase after reading all of the negative reviews here on Apple's site, but I absolutely love this monitor. I'm using it with my MacBook Pro 13" with TouchBar and it works like a charm. Plug in the laptop using the included USB-C cable (not the thunderbolt charging cable that came with your computer) and it works exactly as advertised.

    The pixel quality is nice, but the convenience is what makes this baby rock! One cable to my computer. That's it.

    I'm using a Belkin USB-C to Ethernet adaptor also so I can have wired internet when at my desk. That plugs right into the back of the monitor and I never have to think about it. Just plug in the single cable from the monitor to my MacBook and it all works.

    The only real time you'd have to be concerned with the USB 2.0 transfer speeds of the extra 3 ports is if you're connecting external hard drives or flash drives to the monitor. (Which I'm not)

    This is a really beautiful monitor at a pretty perfect price. Highly recommend.

    7 of 7 people found this useful

  • 4.0 out of 5 stars

    Fantastic monitor for new MacBook Pros

    With one minor glitch, this monitor has worked flawlessly since it was first connected to my MacBook Pro (late 2016, touch bar). There have been no issues whatsoever in waking from sleep when I touch a key on my Apple Bluetooth keyboard. It has never *not* woken. It's a beautiful, crisp, high resolution monitor.

    The only downside is that the 3 open ports on the backside are only USB-C, not Thunderbolt 3. I had planned to connect the system to our 10 Gb/s network using those ports, but they're only capable of 480 Mb/s.

    The glitch: when I connected it the first time, I went into System Preferences -> Displays -> Scaled -> More Room. After using it a while it seemed not much better resolution than my Apple Display. Sure enough, hovering over "More Room" showed a resolution of 2560x1400, and that was the highest resolution available. I called LG for help, and they didn't understand macOS well enough to provide a solution. Eventually, though a number of different keyword guesses on search engines, I found an Apple page that said to hold down Option while clicking on the Scaled radio button. Then you see all possible monitor resolutions.

    4 of 4 people found this useful

  • 5.0 out of 5 stars

    Pleased with the Display

    I do not use this display for intensive graphics, however, I do use it quite a bit for an extended desktop, and for proofing my FCP and Photoshop output. I have had zero negative issues with this display, and am quite pleased by its clarity.

    The speakers sound good, the USB hub that also charges my MacBook is outstanding. If you are someone who uses their MacBook in multiple locations and purchases extra chargers for convenience, you know that the fact that the display charges is a $100 feature (the cost of the new chargers and cable). Although it only charges at 60W, that is plenty to keep my MacBook going.

    I use it with a 15" MacBook Pro with touch bar (2.9 GHz i7), and the Radeon Pro 560.

    6 of 6 people found this useful