The screen is smart about it, dropping to 10Hz when you're reading, jumping to 120Hz when you need it.
In the quiet hum of manufacturing lines, Samsung has begun producing the LTPO OLED displays destined for Apple's iPhone 13 Pro — a convergence of two rivals that marks a turning point in mobile display technology. The panels, capable of dynamically shifting between 10Hz and 120Hz, solve a problem that kept Apple from offering this feature in 2020: the tension between visual fluency and battery endurance. That this production began a month ahead of last year's pandemic-delayed schedule suggests the industry has found its footing again, and that the rhythms of technological progress, briefly disrupted, are reasserting themselves.
- Apple's long-delayed 120Hz ambition is finally moving from drawing board to factory floor, with Samsung producing 80 million LTPO panels for the iPhone 13 Pro and Pro Max.
- The core tension — high refresh rates devouring battery life — is resolved by LTPO's intelligence: the screen breathes with the content, dropping to 10Hz at rest and surging to 120Hz in motion, cutting power use by up to 20%.
- A clear divide is forming in the iPhone 13 lineup, with Pro models leaping to 120Hz while base models hold at 60Hz, sharpening the premium tier's identity.
- Production starting a month earlier than last year signals supply chain recovery and Apple's confidence in returning to its traditional September launch window.
- LTPO's efficiency opens a door long shut to iPhone users — an Always-On Display showing time and notifications without draining the battery, a feature Android flagships have offered for years.
Samsung has begun manufacturing the LTPO OLED display panels set to power the iPhone 13 Pro and Pro Max — and with them comes a feature Apple has been circling for years: a 120Hz screen that doesn't punish the battery.
The technology behind this is LTPO, a thin-film transistor approach that allows the display to dynamically adjust its refresh rate. Reading static text might drop it to 10Hz; a fast-moving game pushes it to 120Hz. The result is up to 20% better energy efficiency compared to the iPhone 12's display. Apple had considered 120Hz for the iPhone 12, but the combination of 5G power demands and a fixed high refresh rate made the battery math unworkable. LTPO changes that calculation.
Samsung will supply 80 million of these panels for the Pro models, while LG handles the standard iPhone 13 and mini with conventional 60Hz OLED screens. The production timeline carries its own message: panels are rolling out a month earlier than last year, when the pandemic forced a delayed launch. An earlier start suggests the supply chain has stabilized and Apple is on course for its traditional fall announcement.
The LTPO technology also unlocks something iPhone users have long watched Android owners enjoy: an Always-On Display. By keeping the refresh rate extremely low, the lock screen can show the time, battery, and notifications without meaningfully draining the battery. Beyond the display, the broader iPhone 13 lineup is expected to bring larger batteries, the A15 Bionic chip, improved cameras with bigger sensors, a smaller notch, and storage up to 1TB. The Pro models, however, will be defined by their screens — and those screens are already being made.
Samsung has begun manufacturing the display panels that will power the iPhone 13 Pro and Pro Max, and they're bringing a technology that Apple held back from last year's flagship: a 120Hz screen that won't drain the battery dry.
The panels in question use something called LTPO—low-temperature polycrystalline oxide—a thin-film transistor technology that Samsung has been refining since the Galaxy Note 20 Ultra. The key innovation is simple but elegant: instead of running at a fixed refresh rate, the screen dynamically adjusts. When you're reading a static article, it might drop to 10Hz. When you're playing a game, it jumps to 120Hz. The result is a display that's up to 20 percent more energy efficient than what's in the iPhone 12, all while offering that buttery-smooth 120Hz experience that Android flagship users have enjoyed for years.
Apple had considered putting a 120Hz screen in the iPhone 12, but the company worried that pairing a high refresh rate with the power demands of 5G connectivity would be a battery disaster. The math didn't work. With LTPO technology handling the refresh rate intelligently, that calculation changes. The efficiency gains are real enough that Apple apparently decided to move forward with the Pro models.
Samsung will supply 80 million of these panels, while LG handles the base iPhone 13 and iPhone 13 mini with conventional 60Hz OLED screens—a more straightforward technology that doesn't require the dynamic refresh rate capability. The production timeline itself carries a signal: these panels started rolling off the line a month earlier than last year's iPhone 12 displays. That's meaningful. Last year, the pandemic forced Apple to delay the entire iPhone 12 launch by a month, scrambling supply chains and throwing off the usual September schedule. An earlier start this year suggests the industry has stabilized and Apple is confident enough to return to its traditional fall announcement window.
Beyond the refresh rate, the LTPO technology opens a door that's been closed to iPhone users: an Always-On Display. Android phones have had this for years—your lock screen showing the time, battery level, and notifications without waking the full display. Apple is expected to finally bring this to iPhones, using the same approach. The dynamic refresh rate means the screen can stay on without becoming a battery vampire.
The broader iPhone 13 lineup is shaping up with other upgrades too. All four models are rumored to get larger batteries. The A15 Bionic chip powering them is already in production and will be slightly more efficient than the A14 in the iPhone 12. The cameras are getting bigger sensors and new lenses, including sensor-shift optical image stabilization. The notch is shrinking. Storage goes up to 1TB. The design is refined but familiar.
What matters most is that Samsung's LTPO production starting now means the pieces are in place for Apple to finally match what Android flagships have been doing for years—and to do it without the battery penalty that made it impossible before. The September launch is coming, and the Pro models will have the screens to prove it.
Notable Quotes
Apple had considered putting a 120Hz screen in the iPhone 12, but worried that pairing it with 5G would drain the battery too quickly— industry reports
LTPO enables a screen to dynamically change its refresh rate according to content being displayed, optimizing power consumption— technology analysts
The Hearth Conversation Another angle on the story
Why did Apple skip 120Hz on the iPhone 12 if Samsung already had the technology working?
The problem wasn't the technology—it was the battery math. A 120Hz screen running all the time is a power hog. Add 5G on top of that, and you're looking at a phone that dies by dinner. Apple decided it wasn't worth the tradeoff.
But LTPO solves that?
Exactly. LTPO doesn't run at 120Hz all the time. It drops to 10Hz when you're just reading text, jumps to 120Hz when you need it. The screen is smart about it. That 20 percent efficiency gain is real.
So this is just Samsung catching up to what Android already does?
Not quite. Samsung's been using LTPO since the Note 20 Ultra. Apple is the one catching up. But Apple's version will probably be more refined—they tend to polish these things until they feel invisible.
What about the Always-On Display rumor?
That's the real unlock. With LTPO, you can leave the lock screen on without destroying your battery. Android phones have had this forever. iPhone users have been waiting.
Does the earlier production start mean anything?
It means the supply chain is healing. Last year was chaos—pandemic delays, the whole iPhone 12 launch pushed back a month. This year, Samsung and LG are starting a month earlier than they did last year. Apple's probably confident enough to stick with September.
Will the base iPhone 13 feel like it's missing something without 120Hz?
Maybe. But LG's 60Hz panels are fine for most people. The Pro is where you pay for the smoothness. That's always been Apple's playbook.