Wi-Fi Router Issue Fix Coming For LG's UltraFine 27-inch 5K Display - MacRumors
Skip to Content

Wi-Fi Router Issue Fix Coming For LG's UltraFine 27-inch 5K Display

A recurring issue with the LG UltraFine 27-inch 5K display that causes glitches whenever the monitor is placed close to a router will be fixed, LG has announced.

Recently, reports began circulating online that LG's 5K monitor – created in partnership with Apple – suffers from flickering and freezing when placed close to a wireless router, with this behavior sometimes causing connected Macs to also freeze and require a restart.

lg ultrafine 5k
On Wednesday, an LG support person confirmed to ArsTechnica that the issue had been reported by a number of users and that it only seemed to occur with the company's Apple-approved 5K monitors. LG has now publicly apologized for the glitch and says all new models made after February will not be susceptible to the problem.

Speaking today to Recode, an LG spokesperson said that the company will resolve the problem by inserting additional shielding into newly manufactured models, which should protect against the electromagnetic radiation from routers that is likely causing the issues.

"LG apologizes for this inconvenience and is committed to delivering the best quality products possible so all LG UltraFine 27-inch 5K displays manufactured after February 2017 will be fitted with enhanced shielding," the company said in an e-mail.

According to LG, existing models will be able to be retrofitted with the same enhanced shielding, allowing the monitors to be placed near routers without playing up. Owners affected by the issue are advised to get in touch with LG support using the number (800) 243-0000, or to visit their local LG seller to arrange for a repair.

Apple teamed up with LG to create both the 4K and 5K UltraFine Displays, specifically designed to work with the new 13-inch and 15-inch MacBook Pro. The displays are a successor to Apple's own Thunderbolt Display, which it discontinued earlier this year amid its departure from the standalone display business.

The 5K Display is currently available for purchase at the sale price of $974 until March 31, 2017, when the price will return to $1,299.95. Apple was recently falsely accused of hiding negative feedback about the new display on its web store, when the truth was that reviews had not yet been activated for the product page.

Whatever the reason for the initial delay, posting to the product page has been possible since January 25 and reviews have so far been mixed. LG's display currently has a 3 out of 5 star rating based on 115 reviews, but it's not entirely clear how many of them are solely affected by the router glitch.

Related Roundup: Studio Display
Tag: LG
Buyer's Guide: Displays (Buy Now)
Related Forum: Mac Accessories

Popular Stories

Apple Event Logo

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...
iOS 26

Apple Says iOS 26.5 Adds Three New Features to Your iPhone

Tuesday May 5, 2026 7:36 am PDT by
iOS 26.5 includes three new features for iPhones, according to Apple's release notes for the update, which is expected to be released next week. As discovered during beta testing, iOS 26.5 enables end-to-end encryption for RCS messaging between iOS and Android devices. Apple says this security upgrade is limited to supported carriers around the world and will continue to roll out....
Instagram Feature 2

PSA: Instagram Encrypted Messaging Ends on Friday, May 8

Tuesday May 5, 2026 8:24 am PDT by
Instagram will remove end-to-end encryption for direct messages between users from May 8, 2026. When the date comes around, Meta will potentially be able to see the contents of all messages between users on the social media platform. Encrypting messages has been an optional feature in Instagram since 2023, but in March of this year the social media platform quietly updated a help page to say ...

Top Rated Comments

JosephAW Avatar
121 months ago
A display with no sheilding? I suppose they were trying provide a low cost monitor to the consumer by cutting back on expensive materials like tin.
Score: 28 Votes (Like | Disagree)
PatriotInvasion Avatar
121 months ago
Ahhh...$1,000 for a display that took 5-6 weeks to ship and they expect people to ship it somewhere for repair. Yea right. This should result in an extended return window at any Apple Store. Essentially a recall. And, hopefully this triggers Apple to make their own display and stop suscepting Mac users to the black plastic world of PC users.
Score: 25 Votes (Like | Disagree)
Steve121178 Avatar
121 months ago
Nothing like testing a product before release is there!
Score: 23 Votes (Like | Disagree)
meaning-matters Avatar
121 months ago
Current owners are advised to wrap the backside in aluminum/aluminium foil.
Score: 18 Votes (Like | Disagree)
121 months ago
Low quality strikes back...
Score: 16 Votes (Like | Disagree)
PBG4 Dude Avatar
121 months ago
how do you get in touch with LG and get them fixed??? I have two and UK based...
Can you not bring them to an Apple Store? This is probably why people want an Apple branded monitor. They know where to bring it for service.
Score: 15 Votes (Like | Disagree)