This hidden iPhone 17 setting is destroying your eyes

Apple is type of infamous for hiding necessary options. On iPads, for instance, there are alternatives to shrink the dimensions of the interface to suit extra textual content and graphics onscreen, or change again to the sooner multitasking system if you happen to do not like Mac-style windows. The corporate does ship a couple of useful ideas by way of its Suggestions app, however in any other case, you are left to find a variety of customization choices by yourself.

iPhones aren’t any exception. In truth, if utilizing your iPhone 17 or iPhone Air in low mild is bothering you, there could also be only a single, considerably cryptic possibility it is advisable change, buried a few layers down within the iOS Settings app. Whereas I am at it, if you do not have a 17 or Air, I’ll contact on a couple of basic iPhone settings (and habits) that may make issues higher for delicate eyes. You may additionally profit if you happen to’re having bother with studying, or like me, attending to sleep on time may be an ordeal.

The ins and outs of pulse smoothing

What it is advisable know

Units primarily based on LED lighting do not essentially management brightness the way in which you’d anticipate. While you think about a light-weight brightening or dimming, you are in all probability picturing an incandescent bulb, which adjustments strictly primarily based on the quantity of energy flowing via it.

Definitely, energy ranges are nonetheless necessary on LED gadgets, however usually what is going on on is one thing referred to as pulse width modulation, or PWM for brief. It is a time period I am acquainted with from electric unicycles, consider it or not. Within the context of issues like smart bulbs or your telephone, although, it refers to LEDs turning on and off at totally different charges to trick your mind into pondering you are seeing a brighter or dimmer picture. This may really be important with smartphones, since OLED panels current visible issues if you happen to merely scale back energy circulate.

Most individuals will not discover PWM in any respect. At greater brightness ranges, your iPhone’s display screen is flickering so quick that the impact tends to be indiscernible. As brightness ramps down, although, you are an increasing number of prone to catch it, if not essentially consciously. There’s a much more critical danger, nevertheless. A minority of persons are bodily delicate to low PWM charges, which many gadgets have relied on for years. In case your iPhone typically triggers signs like complications or nausea, this can be why. In excessive circumstances, this sensitivity might result in crippling migraines.

Show adjustments on the iPhone 17 lineup and the iPhone Air imply that it is now doable to counteract the consequences of PWM. Particularly Apple has carried out an possibility referred to as Show Pulse Smoothing, which you’ll toggle on below Settings -> Accessibility -> Show & Textual content Dimension. To make issues further clear, you’ll solely discover this selection on the iPhone 17, 17 Professional, 17 Professional Max, and iPhone Air. It isn’t accessible on the iPhone 17e, presumably as a result of that mannequin makes use of older display screen tech. Apple’s price range gadgets usually reuse elements from outdated flagship merchandise.

Keep away from turning on Show Pulse Smoothing if it is not distracting you or inflicting among the signs I’ve talked about. Apple warns that disabling PWM can negatively have an effect on the low-brightness efficiency of an iPhone “below sure circumstances.” Moderately vaguely, the corporate does not clarify what these are. Presumably it is referring to the identical points that led to telephone makers adopting PWM within the first place.

What else are you able to do to make an iPhone simpler on the eyes?

Some fundamental suggestions

Maybe the only tactic is ensuring Auto-Brightness is on, below the identical menu as Pulse Smoothing. This adjusts brightness primarily based on ambient lighting circumstances, not solely serving to your eyes, however prolonging battery life. You may and will nonetheless modify basic brightness in Management Heart — Auto-Brightness will preserve ranges relative. My very own suggestion is to purpose for about 50%, which on an iPhone 16 or 17 will nonetheless be a lot readable below most circumstances.

Talking of studying, if you happen to’re scuffling with that, you could need to head over to Settings -> Accessibility -> Show & Textual content Dimension -> Bigger Textual content. Drag the slider to a dimension that is comfy with out going overboard. In the event you go too far, you will see little or no content material onscreen in apps and webpages. Worse, this may really intrude with buttons in apps, that are designed with Apple’s commonplace font dimension in thoughts.

Remember to set a Night time Shift schedule below Settings -> Show & Brightness. When it is energetic, this characteristic shifts your show in the direction of hotter tones, lowering the quantity of blue mild you are uncovered to. The consequences of blue mild are typically overstated — however, it is the worst type of mild on your sleep patterns, since it’s totally efficient at suppressing melatonin manufacturing. If you would like the total impact, schedule Night time Shift to begin a minimum of 3 hours earlier than you go to mattress, and set its tone to be as heat as doable. Schedule it to show off while you usually get up.

One final possibility I might suggest is Enhance Distinction, once more below Settings -> Accessibility -> Show & Textual content Dimension. This boosts the distinction between foreground and background colours in apps. This may probably be uncomfortable for some folks, however I really fairly prefer it — it makes textual content and pictures “pop” in a approach I might prefer to have commonplace on iPhones.

Anything I’d counsel boils all the way down to habits, quite than settings. It is best to, as an illustration, keep away from any brilliant show in a darkish room, as a result of that diploma of distinction may be painful. Even a dim lamp will assist ease issues. In the event you’re attempting to get to sleep, however want iPhone movies to wind down, you must a minimum of flip brightness down so far as you may tolerate, and contemplate closing your eyes and listening as a substitute. I am doing precisely that on many nights.

Realistically, one of the simplest ways to alleviate eye pressure is all too easy: taking a break. One commonplace method is the “20-20-20” rule, which includes observing one thing 20 ft away for 20 seconds each 20 minutes. The rationale you are observing one thing within the distance is to loosen up the muscular tissues wanted to focus. In any other case, although, one of many main advantages is permitting your self to blink extra usually, lowering dryness. And if you happen to’re coping with common complications, this may increasingly do the trick, as both tense muscular tissues or the consequences of PWM could possibly be accountable.

When you’ve got bother forcing your self to take a break, it might be time to activate Downtime and App Limits for your self below Settings -> Display Time. Just a few apps, like YouTube, will allow you to set their very own sleep timers, guaranteeing that you could’t preserve binging movies indefnitely — a minimum of with out noticing how lengthy it has been.