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The LG UN9070 is a Costco-exclusive 4K Ultra High Definition (UHD) TV from LG’s 2020 UN series, and in 2026 it makes sense only as a cheap used big screen. Costco sold it from 2021 into 2022 in large sizes, including 75 and 86 inches, with a native 120Hz in-plane switching (IPS) panel, two High-Definition Multimedia Interface (HDMI) 2.1 ports, and LG’s webOS software. This LG UN9070 review explains what the TV does well, where it falls short, and which current big-screen TVs replace it.
Quick verdict: The UN9070 suits bright family rooms, sports, and casual console gaming, thanks to wide viewing angles, smooth 120Hz motion, and 4K at 120Hz on two ports. It has no local dimming, though, so contrast and high dynamic range (HDR) performance are weak, and owners report no variable refresh rate (VRR). Buy one only at a low used price. Check the LG UN9070 price on Amazon.
Key takeaways
- What it is: A Costco-only LG 4K TV from the 2020 UN series, sold in big sizes such as 75 and 86 inches from 2021 into 2022.
- Price: Costco listed the 86-inch at $1,499.99 and the 75-inch at $1,099.99, with deals as low as $1,199.97 and $899.99. Prices change often.
- Main strength: A native 120Hz IPS panel with wide viewing angles and two HDMI 2.1 ports for 4K at 120Hz.
- Main weaknesses: No local dimming, dim HDR, and no VRR, according to owners.
- Status: Discontinued; Costco’s TCL Q77K and LG’s 2026 Nano NU70 are the closest current options.
LG UN9070 at a glance
| Spec | LG UN9070 (Costco) |
|---|---|
| Model numbers | 75UN9070AUD and 86UN9070AUD, among others |
| Sold | Costco, 2021 to 2022 (2020 UN series design) |
| Costco prices | 86-inch $1,699.99 at launch, later $1,499.99 regular; 75-inch $1,099.99 regular |
| Panel | 4K IPS liquid crystal display (LCD), direct-lit light-emitting diode (LED) backlight, no local dimming |
| Refresh rate | 120Hz native |
| Processor | α7 Gen 3 Intelligent Processor 4K |
| HDMI | Four ports: two HDMI 2.1 (HDMI 3 and 4) with 4K at 120Hz and auto low latency mode (ALLM); one with enhanced Audio Return Channel (eARC) |
| HDR and audio | Dolby Vision IQ, HDR10, Hybrid Log-Gamma (HLG), and Dolby Atmos |
| Smart features | webOS with ThinQ artificial intelligence (AI), Magic Remote, Apple AirPlay 2 and HomeKit, Alexa and Google Assistant support |
| Other | Bluetooth 5.0, Ethernet, optical audio output, 600 x 400 VESA mount pattern on the 75-inch |
Specs come from Costco listings quoted in Slickdeals’ 75UN9070 thread, Slickdeals’ November 2021 86UN9070 thread, and Slickdeals’ May 2022 86UN9070 thread, plus Costco’s UN9070 support page. Major review labs didn’t test this Costco-only model, so this review relies on listing specs and owner reports.
What the UN9070 is (and isn’t)
LG’s model names can confuse shoppers. The UN prefix marks LG’s 2020 entry-level UHD series, which sits below the NanoCell and QNED lines. Costco’s UN9070 followed the UN8570, an earlier Costco model, and owners in an August 2021 Slickdeals thread noted that the two share the same remote and very similar specs. It isn’t a NanoCell TV, and it doesn’t have the full-array local dimming of LG’s higher-end sets, despite a few early retail listings that suggested otherwise.
Costco also sold it with strong extras. LG’s one-year warranty plus Costco Concierge coverage gave buyers two years, and several deals added a three-year Allstate plan and a $100 streaming credit. Costco’s 90-day return window applied as well.
Design and connectivity
The UN9070 has a slim, plain design with thin bezels and two feet near the edges, so the 86-inch needs very wide furniture or a wall mount. The 75-inch uses a 600 x 400 Video Electronics Standards Association (VESA) pattern, and our guide to the best TV wall mounts includes brackets for big sets.
Connections cover four HDMI ports, two or three Universal Serial Bus (USB) ports depending on the listing, Ethernet, an antenna input, and optical audio. Only HDMI 3 and HDMI 4 support HDMI 2.1, and one HDMI port handles eARC, which passes lossless audio to a soundbar. Owners noted that eARC doesn’t pass DTS audio.
webOS and smart features
LG’s webOS is one of the easiest smart platforms to use, and the Magic Remote works like a pointer, which makes typing and menu navigation quick. The UN9070 supports Apple AirPlay 2 and HomeKit, so you can cast from an iPhone, and it works with Alexa and Google Assistant. One owner of a 75-inch model reported frequent app crashes, so install the latest firmware first. If the apps feel slow, a streaming stick costs little and keeps everything current.
Picture quality
The UN9070’s picture depends on its IPS panel. IPS keeps color and brightness consistent from wide angles, which helps when your family spreads across a big sectional. The tradeoff is low native contrast, and with no local dimming to compensate, blacks look gray in a dark room. One buyer in Slickdeals’ 75UN9070 thread compared it with the Hisense U8G and found the LG’s contrast clearly weaker, though it won on viewing angles.
HDR is the weakest area. The UN9070 accepts Dolby Vision IQ and HDR10, but it can’t get bright enough to make highlights pop. The poster in Slickdeals’ May 2022 86UN9070 thread quoted Consumer Reports ratings for the closely related 65-inch UN9000 that scored HDR 2 out of 5 for limited peak brightness and motion 4 out of 5 thanks to the 120Hz panel. Owners also reported some uniformity problems, including backlight bleed and a stuck pixel on 65-inch units, so inspect a used set before you buy. Our explainer on how local dimming works shows what this TV is missing.
Motion and gaming
The native 120Hz panel makes sports and fast pans look smoother than a 60Hz TV, and our 60Hz vs. 120Hz TV explainer covers why. For gaming, two HDMI 2.1 ports handle 4K at 120Hz with HDR from a PlayStation 5 (PS5) or Xbox Series X, and ALLM switches to game mode automatically. Owners report that the TV lacks VRR, though, so you may see tearing or stutter when frame rates dip. Our guide to the best gaming TVs for PS5 and Xbox lists better options.
Sound
The UN9070 supports Dolby Atmos, but its small built-in speakers can’t fill a room that fits an 86-inch screen. A Dolby Atmos soundbar from Amazon connected through eARC makes a much bigger difference than any sound setting.
Pros and cons
Pros
- Native 120Hz panel for smooth sports and motion
- Two HDMI 2.1 ports with 4K at 120Hz and ALLM
- Dolby Vision IQ and Dolby Atmos support
- Wide viewing angles from the IPS panel
- LG’s Magic Remote and easy webOS software
Cons
- Low contrast and no local dimming
- Dim HDR highlights
- No VRR support, according to owners
- Sold only at Costco, and now discontinued
- Some owners reported uniformity problems and app crashes
What replaced the LG UN9070?
LG kept refreshing its entry UHD series: the UP series in 2021, the UQ9000 in 2022, then the UR, UT, and UA series, and the Nano NU70 in 2026. Most of those US models use 60Hz panels, so the UN9070’s 120Hz panel stood out. For the 2021 step down, see our LG UP7000 review.
If you shop at Costco, check Costco’s TV section for the TCL Q77K, which runs at a native 144Hz, comes in sizes up to 98 inches, and includes five years of total coverage. Our TCL Q77K review covers it in detail.
LG UN9070 vs. current big-screen TVs
Amazon is our main affiliate partner, and it carries LG’s current models plus strong 75- and 85-inch rivals. Prices change often, so check current listings.
Compare similar big-screen TVs on Amazon
| TV | Panel and backlight | Max refresh rate | Best for | Shop |
|---|---|---|---|---|
| LG UN9070 (2021) | IPS, no local dimming | 120Hz | Low-cost used big screens | Check price |
| LG Nano NU70 (2026) | LCD, α7 processor | Not listed | LG fans who want new software | Check price |
| LG QNED85 (2026) | Mini LED with local dimming | 144Hz in game mode | LG fans who want HDR and gaming | Check price |
| TCL Q77K (2025) | Vertical alignment (VA) panel with quantum dots (QLED), no local dimming | 144Hz | Costco-style value and gaming | Check price |
| TCL QM6K (2025) | Mini LED, quantum dots | 144Hz | Budget HDR in big sizes | Check price |
| Hisense U7SG (2026) | Mini LED, quantum dots | 165Hz | Multi-console gaming | Check price |
- LG Nano NU70: The simplest upgrade for LG fans who want webOS and the Magic Remote with a warranty. See the NU70 on Amazon.
- LG QNED85: European retailer listings show a Mini LED backlight, 144Hz gaming, and four HDMI 2.1 ports for the 2026 model, fixing nearly every UN9070 weakness. See the QNED85 on Amazon.
- TCL QM6K: Mini LED dimming gives it far deeper blacks and brighter HDR for a modest price. See the QM6K on Amazon.
Who should buy the LG UN9070?
Buy a UN9070 if you find one used for a few hundred dollars, you watch sports and daytime TV in a bright room, and your seating spreads wide. It also suits a single console gamer who doesn’t care about VRR. Skip it if you watch movies at night, want punchy HDR, or care about a warranty. Our roundup of the best smart TVs for the money lists newer options.
Frequently asked questions
Is the LG UN9070 a Costco model?
Yes, the LG UN9070 is a Costco model, sold with model numbers such as 75UN9070AUD and 86UN9070AUD. Costco bundled it with a second year of coverage through Costco Concierge, and some deals added a three-year Allstate plan.
Does the LG UN9070 have HDMI 2.1?
Yes, the LG UN9070 has two HDMI 2.1 ports, HDMI 3 and HDMI 4, according to owners and Costco’s later listings. They support 4K at 120Hz, ALLM, and eARC, but owners report no VRR.
Is the LG UN9070 the same as the UN8570?
The LG UN9070 is very close to the UN8570, the Costco model it followed, according to owners who compared them. Both use a 120Hz IPS panel with no local dimming, and they share the same remote.
Is the LG UN9070 worth buying in 2026?
The LG UN9070 is worth buying in 2026 only at a low used price. Its dim, low-contrast picture falls well behind new 75- and 85-inch TVs such as the TCL Q77K, which Costco sells with five years of coverage.
Final verdict
The LG UN9070 gave Costco shoppers a huge 120Hz screen with HDMI 2.1, Dolby Vision IQ, and LG’s excellent webOS and Magic Remote. Its IPS panel and lack of local dimming leave contrast and HDR weak, though, and today’s 144Hz TVs cost less and do more. Buy one only at a low used price. Check the current LG UN9070 price on Amazon.