LG Class B4 Series OLED 4K Smart TV Review 2026: Worth Buying?

The OLED TV market keeps growing, and LG sits at the top of it. The LG B4 Series OLED 4K Smart TV brings premium picture quality to a friendly price point. It targets buyers who want true OLED blacks without spending flagship money.

This review covers everything you need to know in 2026. We tested the picture, sound, gaming features, and smart platform. We also compared it against newer models and rival OLEDs. By the end, you will know if the B4 fits your living room or gaming setup.

LG launched the B4 in 2024, but it stays relevant in 2026. Prices have dropped, and it still beats most mid range LED TVs on contrast. Let us walk through every reason it earns a spot on your shortlist.

Key Takeaways

• True OLED contrast at a budget price: The B4 uses self lit pixels, so blacks look perfect and colors pop. You get the same panel technology found in TVs costing hundreds more.
• All four HDMI 2.1 ports support 48Gbps bandwidth: This is rare at this price. Gamers can plug in a PS5, Xbox Series X, and a gaming PC at the same time without losing features.
• 120Hz native refresh with VRR, ALLM, and G Sync: The B4 supports NVIDIA G Sync, AMD FreeSync Premium, and variable refresh rate. Motion stays smooth in fast paced games.
• Alpha 8 AI Processor handles upscaling well: Older 1080p shows and movies look sharper than on most LCD sets. The chip is a step below the C4, but still strong.
• webOS 24 with Alexa built in: You get every major streaming app, voice control, and the Magic Remote. The interface feels fast and modern.
• Best for dim to medium rooms: Peak brightness sits lower than QD OLED rivals. Bright sunny rooms may wash out HDR highlights a bit.

What is the LG B4 Series OLED 4K Smart TV?

The LG B4 is the entry level OLED in LG’s 2024 lineup. It sits below the C4, G4, and M4 models. The B in the name stands for the budget tier, but the panel quality stays premium.

You can buy it in 48, 55, 65, 77, and 83 inch sizes. Each size uses a WRGB OLED panel built by LG Display. The TV runs webOS 24, LG’s smart platform. It supports Dolby Vision, Dolby Atmos, and HDR10.

The B4 replaces the older B3 model. It brings a new processor, faster HDMI ports, and a refreshed remote. The design stays slim and minimal, with a thin metal stand.

LG aims this TV at first time OLED buyers and price savvy gamers. It fights against models like the Samsung S85D and Sony Bravia 7. The pitch is simple: real OLED contrast without the flagship cost.

Design and Build Quality

The B4 looks clean and modern. The bezel is almost invisible from the front, and the panel itself stays thin near the top. The bottom half thickens to hold the speakers and ports.

The stand is a simple wide pedestal in dark metal. It works but takes up a fair amount of TV stand space. You will need a surface as wide as the TV itself. Wall mounting solves this with a standard VESA pattern.

Build feels solid for the price. The plastic back panel does not creak, and the screen sits firmly on its stand. It weighs less than most LED TVs of the same size. The 65 inch model comes in at around 48 pounds without the stand.

Cable management is basic. There are no clips on the back, but ports face sideways and downward. This makes wall mounting much cleaner than older OLED models.

Picture Quality and OLED Performance

This is where the B4 earns its price. Self lit pixels deliver perfect blacks and infinite contrast. Each pixel can shut off completely, so dark scenes show real depth.

Color accuracy out of the box is strong. The Filmmaker Mode tracks close to industry standards. Reds, greens, and skin tones all look natural. You will not need to calibrate the TV unless you are picky.

Peak HDR brightness sits around 650 to 700 nits in a 10% window. This is lower than the C4, S90D, or Bravia 8. Highlights in HDR movies still pop, but bright sunny rooms reveal the limit. The TV shines in dim and dark rooms.

Viewing angles are excellent thanks to OLED tech. Colors stay accurate from any seat in the room. Sports and movies look great whether you sit center or off to the side.

Alpha 8 AI Processor and Upscaling

The B4 uses LG’s Alpha 8 AI Processor. This is a step below the Alpha 9 chip in the C4 and G4. Still, it handles most tasks with ease.

Upscaling is the big strength. Old DVDs, cable TV, and YouTube clips look sharper than on cheap LED sets. The processor cleans up noise and adds detail without making faces look plastic.

AI Picture Pro adjusts contrast and sharpness scene by scene. AI Sound Pro does the same for audio. Both work in the background and need no setup. You can turn them off if you want a pure signal.

Motion handling is smooth. The TruMotion setting reduces judder in 24p films. Sports look clean at 60Hz with light interpolation. Gamers should keep motion smoothing off to avoid input lag.

Top 3 Alternatives for LG B4 Series OLED 4K Smart TV

If the B4 does not fit your needs, these three OLED options deserve a look. Each one brings a different mix of price, brightness, and features.

The LG C4 sits one tier above the B4. It has a brighter Evo panel, the Alpha 9 processor, and a 144Hz refresh rate. It is the best step up if your budget allows.

The LG B4 55 inch is the smaller sibling for tight spaces. It uses the same panel and features, just in a more compact size. It often goes on sale below 1000 dollars.

The LG C4 65 inch with soundbar bundle packages the C4 with an LG sound system. This is a strong choice if you want better audio without shopping separately.

Gaming Features and Performance

The B4 is a serious gaming TV. All four HDMI 2.1 ports run at the full 48Gbps bandwidth. That means 4K at 120Hz with HDR on every input. Most TVs at this price limit you to two such ports.

Input lag measures around 9 to 10 milliseconds at 120Hz. This feels instant for shooters and fighting games. The B4 supports VRR, ALLM, NVIDIA G Sync, and AMD FreeSync Premium.

The Game Optimizer dashboard pops up when you press the green button on the remote. It shows frame rate, VRR status, and lets you tweak picture mode without leaving the game. Genre presets cover FPS, RPG, RTS, and sports.

Cloud gaming works through GeForce Now and Xbox Cloud Gaming apps. You can play AAA titles without a console plugged in. The B4 does cap at 120Hz, while the C4 reaches 144Hz for PC gamers who want every frame.

Sound Quality and Audio Features

The B4 has a 2.2 channel speaker system rated at 20 watts. Sound is clear for dialog and casual TV viewing. Bass stays light, and big action scenes lack punch.

Dolby Atmos passes through to the built in speakers, but the effect is mild. There is no upfiring driver. AI Sound Pro tries to fake a wider stage, and it works to a small degree.

Voice clarity is the highlight. News, podcasts, and shows with lots of dialog come through clean. You will rarely need subtitles on regular content.

Most buyers should pair the B4 with a soundbar. Even a budget bar like the LG S65Q or Sonos Beam transforms the experience. The TV supports eARC over HDMI, so audio passes through at full quality. Plan to spend extra on sound for the best home theater feel.

webOS 24 Smart Platform

The B4 runs webOS 24, LG’s latest smart platform. The home screen shows your apps, recent inputs, and recommendations in clean rows. It feels faster than older webOS versions.

Every major app is here. Netflix, Disney Plus, Max, Prime Video, Apple TV, YouTube, and Hulu all run natively. Sports fans get ESPN and dedicated free channels through LG Channels.

The Magic Remote uses motion control. Point it at the screen and a cursor appears. This makes typing search terms much faster than arrow buttons. Voice search works through Alexa or LG’s own assistant.

User profiles let each family member save their preferences. The TV will get free webOS updates for five years. That is a strong long term promise compared to most rivals.

Connectivity and Ports

The B4 covers every input you need. You get four HDMI 2.1 ports, three USB ports, an Ethernet jack, optical out, and an antenna input. All HDMI ports support eARC, but only one is labeled for it.

Wi Fi 5 is built in. The TV does not include Wi Fi 6, which is one place LG cut costs. Bluetooth 5.0 connects headphones and game controllers without trouble. You can pair two pairs of Bluetooth headphones at once for late night viewing.

AirPlay 2 and Miracast both work. iPhone and Android users can mirror or cast without extra hardware. The TV also acts as a HomeKit and SmartThings hub.

No tuner issues stand out. ATSC 1.0 brings free over the air channels in the US. There is no ATSC 3.0 support, so future broadcast features will not work. That is a fair tradeoff at this price.

LG B4 vs LG C4: The Big Comparison

Many buyers ask which one is worth the extra money. Here is the short answer. The C4 is brighter, faster, and uses a better processor. The B4 saves you 200 to 400 dollars depending on size.

The C4 uses the OLED Evo panel with MLA tech. It hits about 1000 nits in HDR, while the B4 caps near 700. In a bright room, this gap is visible. In a dim room, both look stunning.

Refresh rate is the other gap. The C4 runs at 144Hz native, the B4 at 120Hz. PC gamers with high end GPUs will notice. Console gamers will not, since PS5 and Xbox cap at 120Hz anyway.

The C4 has the Alpha 9 processor. It does smarter upscaling and better motion. Casual viewers may not see the difference, but enthusiasts will. Pick the B4 to save money. Pick the C4 if HDR and PC gaming matter to you.

LG B4 vs Samsung S90D and Sony A75L

The Samsung S90D uses a QD OLED panel. Quantum dots boost color volume and brightness above LG WOLED. Reds and greens look more saturated. The S90D also costs more and lacks Dolby Vision support.

The Sony A75L sits in similar territory. It uses an LG WOLED panel with Sony’s processing. Sony’s motion handling and color science are top tier. The smart platform is Google TV, which some users prefer over webOS.

Pricing is the deciding factor. The B4 usually undercuts both rivals by 300 to 600 dollars at 65 inches. Sound on the Sony beats the LG, but the B4 wins on gaming features.

If brightness matters most, pick the Samsung. If sound and color matter most, pick the Sony. If gaming and value matter most, the B4 wins. All three deliver real OLED quality, so you will not be disappointed by any.

Who Should Buy the LG B4 OLED?

The B4 fits several types of buyers well. First time OLED owners get the best value. You jump from LCD to true OLED contrast for a fair price.

Console gamers gain a lot. PS5 and Xbox Series X owners get four HDMI 2.1 ports, VRR, and 120Hz support. Few TVs in this range match that.

Movie fans with dim home theaters will love it. The infinite contrast makes dark films look like a cinema. Dolby Vision support covers all major streaming services.

Skip the B4 if your room gets lots of sunlight. The C4 or a QD OLED handles glare better. Also skip it if you need a strong built in speaker for daily use without a soundbar. For most other buyers, the B4 is one of the best OLED deals in 2026.

Pricing and Where to Buy in 2026

The LG B4 launched in 2024 with these prices: 1300 dollars for 55 inch, 1700 for 65 inch, and 2700 for 77 inch. In 2026, real world prices have dropped well below MSRP.

Expect to find the 65 inch B4 around 1100 to 1300 dollars during normal sales. Black Friday and Prime Day push it lower. The 55 inch often hits 800 dollars on deal days.

Amazon, Best Buy, and Costco all stock the B4. Amazon usually has the fastest delivery and easy returns. Costco offers extended warranty by default. Best Buy bundles sometimes throw in a soundbar.

LG also sells refurbished units through its outlet store. These come with a one year warranty and steeper discounts. Check for open box deals at Best Buy if you want a brand new unit at a lower price.

Pros and Cons of the LG B4 OLED

Here are the strengths and weaknesses in plain terms. The pros lean heavily on picture quality and gaming. The cons mostly involve brightness and sound.

Pros: Perfect blacks and infinite contrast from the OLED panel. Four HDMI 2.1 ports at full 48Gbps bandwidth. Dolby Vision and Dolby Atmos support. Strong webOS smart platform with five years of updates. Affordable price for a true OLED TV. Excellent input lag for gaming. Wide color accuracy out of the box.

Cons: Peak brightness lags behind C4 and QD OLED rivals. Built in speakers need a soundbar for big sound. No Wi Fi 6 or ATSC 3.0 support. Refresh rate caps at 120Hz, not 144Hz like the C4. Stand takes up the full width of the TV.

Overall the pros outweigh the cons by a clear margin. You give up brightness and a few minor features to save real money. That trade makes sense for most buyers in 2026.

Final Verdict: Is the LG B4 OLED Worth It in 2026?

The LG B4 earns a strong recommendation. It brings real OLED quality to a price most families can manage. Picture, gaming, and smart features all punch above the price.

The B4 is not the brightest or fastest OLED on the market. The C4 and QD OLED rivals beat it in those areas. But none of them match the B4’s value. For dim rooms, console gaming, and movie nights, the B4 is hard to beat.

We give the LG B4 OLED a score of 9 out of 10. It is the best entry level OLED you can buy in 2026. If your room stays dim and your budget is tight, this is the TV to get.

If you want more brightness or PC gaming at 144Hz, step up to the C4. Otherwise, click buy and enjoy years of beautiful viewing.

Frequently Asked Questions

Is the LG B4 OLED a good gaming TV?

Yes, the B4 is one of the best gaming TVs at its price. It has four HDMI 2.1 ports, 120Hz refresh, VRR, and a 9 to 10 millisecond input lag. It supports NVIDIA G Sync and AMD FreeSync Premium.

How long will the LG B4 OLED last?

LG rates the B4 panel for over 100,000 hours of use before brightness drops by half. Modern OLED burn in protections like pixel shifting and screen savers reduce risk a lot. Normal mixed use will give you many years of service.

Does the LG B4 support Dolby Vision?

Yes, the B4 supports Dolby Vision, Dolby Atmos, and HDR10. It does not support HDR10 Plus, which is a Samsung backed format. Most major streaming services use Dolby Vision.

What is the difference between the LG B4 and B3?

The B4 has a new Alpha 8 processor, faster HDMI 2.1 ports on all inputs, and webOS 24. The B3 used the older Alpha 7 chip and had only two full bandwidth HDMI 2.1 ports. The B4 is the better pick for gamers.

Can the LG B4 OLED get burn in?

OLED panels can show burn in after long static images. LG includes pixel shifting, logo dimming, and screen refresh tools to prevent it. Normal mixed viewing will not cause burn in for most users.

Is the LG B4 worth it over a QLED TV?

Yes, for most viewers. The B4 has perfect blacks, infinite contrast, and wider viewing angles than any QLED. QLEDs win in bright rooms with peak brightness, but OLEDs win on overall picture quality.

What sizes does the LG B4 come in?

The B4 comes in 48, 55, 65, 77, and 83 inch sizes. The 65 inch is the most popular and offers the best price per inch. The 48 inch works well as a gaming monitor.

Does the LG B4 work with Alexa and Google Assistant?

Yes, the B4 has Alexa built in. It also works with Google Assistant and Apple HomeKit through external devices. You can use voice commands for playback, search, and smart home control.

Last update on 2026-05-06 / Affiliate links / Images from Amazon Product Advertising API