u/yadoga

Was quite happy using my TCL 60 Ultra, but two weeks ago the fingerprint sensor started having issues.

Ordered the Honor 600 Pro and was excited to see this particular model in person after good reviews about its display.

First day:

• slight eye strain. Nothing major, but noticeable
• the phone is otherwise of great build quality, feels like a flagship

Second day:

• eyestrain subsiding
• seems to be working alright for me
• 120 Hz setting with natural color profile and warm colours via scheduled eye-care setting from evening time on

I'll report back shortly with more findings. Feel free to ask your questions here.

The Tianma U9 Pro is one of the more interesting display developments of 2026 and the Find X9s Pro is the first phone to ship with it. I've collected some info that I think make this one interesting for us.

What "Tianma U9 Pro" actually refers to

It's the light-emitting substrate — the OLED emitter stack — not the backplane. Tianma (a Chinese display maker) developed it as the successor to their U9 substrate. So when you see "Tianma U9 Pro," it describes the emissive layer technology, while LTPS/LTPO refers separately to the underlying transistor backplane.

How it might fit our criteria for sensitive eyes

The backplane is LTPS. The launch coverage confirms a 6.32-inch 1.5K LTPS Tianma U9 Pro flat display with a 144Hz refresh rate. (One pre-launch GSMArena news piece said LTPO, but the official launch materials and multiple post-launch outlets all say LTPS. The fixed 144 Hz behavior rather than 1–120 Hz adaptive corroborates this.)

The screen supports 3840Hz high-frequency PWM dimming, which reduces flicker from low-frequency dimming and alleviates visual fatigue from prolonged use. So it matches the Honor 600 Pro and Find X9 base on PWM frequency.

Color depth is not explicitly stated as "true 10-bit" in the launch materials I could find. Oppo's marketing emphasizes Dolby Vision support and brightness adjustment accuracy as high as one-thousandth of 1 nit, with fine calibration and dynamic feedback for smoother grayscale transition, but doesn't make the "no FRC" claim that Honor explicitly makes for the 600 Pro. I'd hope for true 10-bit for the time being, but currently unverified whether native.

What's actually new about U9 Pro

1. Hardware-level blue light reduction. Most "eye protection" modes on phones are software filters that warm the color temperature. U9 Pro significantly reduces the proportion of harmful blue light in the intrinsic spectrum and precisely controls the peak wavelength of blue light through a nano-level evaporation process, reducing the output of harmful blue light from the hardware source. If accurate, this means less harmful blue energy without yellowing the picture in software. Could be a meaningfully different approach.

2. Dual-GP structure. Tianma's self-developed dual-GP structure is 30% better than the previous generation, and can match the sensitivity of the human eye according to different ambient light conditions. This relates to how the panel modulates output in response to ambient brightness.

3. 1-nit minimum with extreme precision. The thousandth-of-a-nit dimming step is the headline eye-comfort feature. Combined with 3,840 Hz PWM, very-low-brightness night viewing should be unusually smooth — no visible quantization stepping as you slide the brightness down, and no perceptible flicker at the bottom of the range.

Where it sits vs. the competition

Tianma is a newer entrant in flagship-tier panels. Samsung Display and BOE still dominate, and there's less independent oscilloscope testing of U9 Pro panels than there is for, say, the Honor's BOE display.

The 3,840 Hz figure is Oppo's spec; an independent measurement (Notebookcheck-style) hasn't crossed my radar yet. Worth waiting a few weeks for a teardown-grade review if PWM-sensitivity is the deciding factor.

This news from April is currently being discussed in the PWM sub..