Direct answer
For the Apple iPhone 11, one app/region, moisture, protector/case, charger interference and display hardware should be separated. First, remove charger/case/protector for a dry-room test.
What this covers
- Apple iPhone 11 (A2111/A2221/A2223)
- Apple iPhone family; connector, modem, camera, biometric and iOS eligibility vary by exact model.
- The specific fault this record addresses: screen or touch input is not working correctly
What it does not cover
- ×The same symptom on a different Apple product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
A screen protector or case interfering
What separates it Touch is unreliable at the edges, or a thick protector was fitted recently. Edge gestures are the first thing to suffer, and a lifted protector traps air that the digitiser reads through.
How to confirm Remove the protector and case and retest the same gestures. This is quick, free, and accounts for a lot of 'the edges stopped working'.
- 2
Moisture, grease or sweat on the glass
What separates it Touches register in the wrong place, or the screen behaves as though something is touching it. Water bridges the capacitive field and the digitiser reads it as a finger.
How to confirm Dry the screen and your hands thoroughly and retest. Phantom touches in a bathroom or in rain are usually this and nothing else.
- 3
The phone has been dropped
What separates it A dead strip, an area that does not respond, or touches landing offset — starting after an impact, with or without visible glass damage. A digitiser can separate from the display without the glass cracking.
How to confirm Map the unresponsive area by dragging a finger slowly across the whole screen. A consistent region is physical; a wandering one is not.
- 4
The phone is too hot or too cold
What separates it Touch degrades in a hot car or in a hard frost and recovers indoors. Both the display and the digitiser have an operating range.
How to confirm Bring it to room temperature and retest before concluding anything.
- 5
A software freeze rather than a touch fault
What separates it The screen is showing something and ignoring everything, including buttons. The phone has stopped responding, not stopped sensing.
How to confirm Force-restart. A phone that responds afterwards had a software freeze, which is a completely different problem from a digitiser fault.
- 6
One app rather than the whole phone
What separates it Touch fails inside a particular app and works everywhere else. An app can capture or mishandle input without the system being affected.
How to confirm Test the same gestures on the home screen and in settings. Working there exonerates the hardware entirely.
- 7
A charger injecting noise into the digitiser
What separates it Phantom touches or erratic behaviour only while charging, particularly on cheap or unearthed adapters. The digitiser is sensitive to electrical noise.
How to confirm Unplug and retest, then test on a different adapter. This is a real and frequently missed cause.
- 8
An accessibility or display setting changed
What separates it Touches need to be held longer than expected, or gestures behave differently, with no impact and no app pattern. Touch accommodations and gesture settings do exactly this.
How to confirm Review the accessibility touch settings. These get enabled accidentally and are hard to guess at.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Whether the image itself is wrong, or the image is perfect and touch is not. Display and digitiser are two different components and this question separates them.
- A map of where touch fails, made by dragging slowly across the whole screen — a consistent region means something different from scattered failures.
- Whether it fails everywhere or only inside one app.
- Whether it fails only while charging, and on which adapter.
- Whether the phone has been dropped, and whether there is any visible damage — including none.
- The temperature, and whether it recovers indoors.
- Whether a screen protector or case is fitted, and when it was fitted.
Separate the display from the digitiser
ReversibleWrong pixels, lines or dead areas in the image are a display fault. A perfect image that ignores or misplaces touches is a digitiser fault. They are two components stacked together, they fail independently, and every step below depends on knowing which one you have.
Force-restart before anything else
ReversibleA phone that has frozen shows a static image and ignores every input, which is indistinguishable from a dead touchscreen until you restart it. This is fast, safe, and it rules out the single most recoverable cause.
Remove the screen protector and case
ReversibleEdge gestures suffer first, and a lifted protector traps air that the digitiser reads through. This costs nothing and it accounts for a large share of complaints that the edges have stopped responding.
Dry the screen and your hands
ReversibleWater bridges the capacitive field and the digitiser reads it as a finger, which produces both missed touches and phantom ones. Erratic behaviour in a bathroom, in rain, or with damp hands is usually only this.
Map the failure by dragging slowly across the whole screen
ReversibleA consistently unresponsive band or region is physical damage — a digitiser can separate from the display without the glass cracking. Failures that wander are not physical, and that distinction decides whether this is a repair or a settings problem.
Test the same gestures in another app and on the home screen
ReversibleTouch failing inside one app and working elsewhere exonerates the hardware completely. An app can capture or mishandle input without any system-level fault, and no amount of hardware troubleshooting will help.
Unplug the charger and retest
ReversibleA cheap or unearthed adapter can inject enough electrical noise to produce phantom touches, and the symptom appears only while charging. This is real, frequently missed, and testing a different adapter settles it.
Review the accessibility touch settings
ReversibleTouch accommodations, hold durations and gesture settings do exactly what a failing digitiser appears to do, and they get enabled accidentally. They are impossible to guess at from the symptom, so they have to be checked deliberately.
Bring the phone to room temperature
ReversibleBoth the display and the digitiser have an operating range, and touch genuinely degrades in a hot car or a hard frost. Judging a screen while the phone is outside that range measures the temperature, not the screen.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- A2111/A2221/A2223. Apple iPhone family; connector, modem, camera, biometric and iOS eligibility vary by exact model.
- Display
- 6.1-inch all-screen LCD with IPS technology, 1792-by-828 at 326 ppi. Control positions, reachability and how much fits on screen all change with size, so a procedure written for another model in this line will not map one-to-one onto this one.
- Chip
- A13 Bionic. The chip generation governs how long this model keeps receiving iOS updates, and it is the underlying reason an app can stop working here while running normally on a newer iPhone — a support-window matter rather than a fault.
- Connector
- Lightning. Lightning cables and adapters are not interchangeable with the USB-C iPhones and a USB-C cable will not fit at all. Lightning cables also fail internally at the strain point near either connector, which is why a cable swap is the first test for slow or intermittent charging.
- Biometric
- Face ID — face recognition, not a fingerprint reader. It refuses whenever it is not confident, so darkness, strong backlight, unusual angles and lying down all reduce it, and a case lip or a screen protector over the sensor area disables it outright.
- Camera
- 12MP Wide and Ultra Wide. A 12-megapixel main sensor produces much smaller files than the 48-megapixel iPhones, so a storage complaint on this model is less likely to be photos than it would be on a newer one.
- Storage options
- Sold in 64GB/128GB/256GB. The 64GB entry tier is the single most common cause of storage trouble on this model — a current iOS install plus a photo library leaves very little margin, and an update needs room to unpack and stage as well as to store, so it can refuse with what looks like adequate free space.
- Wi-Fi
- Wi-Fi 6 with 2x2 MIMO. This matters directly to Wi-Fi troubleshooting on this model: the generation determines which bands and features it can use, and a router running a newer standard will fall back rather than refusing — so a phone underperforming a newer sibling on the same network is often specification rather than fault.
- Bluetooth
- Bluetooth 5.0. Version differences affect range, reconnection behaviour and which accessory features are available — a newer accessory paired to an older Bluetooth version simply operates at the older one's capabilities rather than failing, which is often mistaken for a pairing fault.
- Screen brightness
- 625 nits maximum brightness (typical). Brightness is one of the largest single consumers of battery on any phone, so a model rated at a higher figure will spend more when it is actually driven to that level — and outdoor readability complaints are usually this specification rather than a display fault.
- Water resistance
- Rated IP68 — Apple specifies a maximum depth of 6 metres for up to 30 minutes under IEC standard 60529. That is a laboratory figure for a new device in fresh water; it degrades with age, drops and seal disturbance, and Apple does not warrant liquid damage.
- SIM
- Supports eSIM alongside a physical nano-SIM. An eSIM does not travel with the handset the way a plastic SIM does — a phone swap, a reset or a repair can leave the profile behind, and restoring it is a carrier action rather than a phone setting.
- Wireless charging
- No MagSafe magnet array on this model. Where wireless charging is supported it relies on alignment alone, which makes placement fussier than on the MagSafe iPhones and makes a thick case far more likely to defeat it.
- Battery rating
- Apple rates this model at up to 17 hours of video playback. Compare your own runtime against that figure and against your own history — the rating varies widely across this line and a smaller iPhone is not faulty for lasting less than a Max.
- Video recording
- 4K video recording at 24, 25, 30 or 60 fps. Frame rate and resolution are the dominant factor in how quickly video fills storage, and they are also what pushes the phone hardest thermally — sustained high-frame-rate recording is the most common cause of a camera that stops mid-take.
- Weight
- 6.84 ounces (194 grams). Worth knowing where a mount is involved: the heavier models in this line stress adhesive mounts and magnetic car holders considerably more than the lighter ones.
- Panel type
- An LCD panel rather than OLED. Dark mode saves no meaningful power here — the backlight illuminates the whole panel regardless of content — and the per-pixel dimming and true blacks described for OLED iPhones do not apply.
- Apple's own specification
- Apple publishes the full technical specification for this model at support.apple.com/en-us/111865. Where any figure above matters to a decision, that page is the authority and this one is not.
- Charging
- Supports wireless charging. Coil alignment is tighter than it looks and a thick case, a metal plate or a card in the case defeats it entirely — so wireless charging failing while cable charging works is usually the case rather than the phone.
- Platform
- iOS. Settings paths, permission models and background-execution rules differ substantially from Android, so a procedure written for an Android phone will not map onto this one screen for screen.
- Panel
- An LCD panel rather than OLED. Dark mode saves no meaningful power here — the backlight illuminates the whole panel regardless of what is displayed — and the per-pixel dimming, true blacks and always-on behaviour described for OLED models do not apply.
- Storage headroom
- Sold with a small entry tier by current standards. This is the single most common cause of storage trouble on this model: a modern OS install and a photo library leave very little margin, and an update needs room to unpack and stage as well as to store, so it can refuse with what looks like adequate free space.
- Symptom boundary
- This record covers Apple iPhone 11 when it screen or touch input is not working correctly. A different symptom on the same hardware, or this symptom on a different Apple product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !There is a consistent dead region, an offset that does not move, or visible damage — the digitiser has failed and it is a repair.
- !The image itself is wrong: lines, discolouration, dead pixels or a spreading dark area. That is the display, and a spreading area gets worse.
- !Touch failed after liquid exposure, which frequently progresses even after the phone appears to dry out.
- !The screen is lifting at an edge, which is the battery swelling underneath it — a stop condition.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. Apple Support publishes this as "If the screen isn't working on your iPhone or iPad". Apple's unresponsive-display article. Probed 2026-08-23: title-verified. What that article does not carry is the model boundary — it is written for a product line, and A2111/A2221/A2223 is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
What size is the iPhone 11 screen?+
6.1-inch all-screen LCD with IPS technology, at 1792-by-828 at 326 ppi. That matters more than it sounds — a procedure written for a different size in the same line puts controls in different places, and gestures that depend on reach behave differently.
Does the iPhone 11 use USB-C or Lightning?+
Lightning. A USB-C cable will not fit at all, which is the usual explanation when a charger that works on a newer iPhone in the same household does nothing here. Lightning cables also fail internally at the strain point, so a cable swap is the first test for slow or intermittent charging.
Does the iPhone 11 have Face ID or Touch ID?+
Face ID. It is deliberately quick to refuse when not confident, which is why darkness, strong backlight, unusual angles and lying down all reduce it — and why a case lip or a screen protector over the sensor area disables it entirely.
What chip does the iPhone 11 have?+
The A13 Bionic. This determines how long the model keeps getting iOS updates, and it is the reason an app can drop support for this iPhone while running fine on a newer one — a support-window matter rather than a fault to troubleshoot.
How much storage does the iPhone 11 come with?+
64GB/128GB/256GB. The 64GB tier is the single most common cause of storage trouble on this model, and it is why an update can refuse with what looks like enough space free — installation needs room to unpack and stage as well as to store.
Is the iPhone 11 waterproof?+
No — water resistant, rated IP68, which Apple specifies as a maximum depth of 6 metres for up to 30 minutes under IEC standard 60529. That is a laboratory figure for a new device in fresh water; it degrades with age, drops and seal disturbance, and liquid damage is not warranted.
Does the iPhone 11 support eSIM?+
Yes, alongside a physical nano-SIM. Bear in mind that an eSIM does not move with the handset the way a plastic SIM does — a phone swap, a reset or a repair can leave the profile behind, and restoring it is a carrier action.
What Wi-Fi standard does the iPhone 11 support?+
Wi-Fi 6 with 2x2 MIMO. That is worth knowing before blaming the phone for slower Wi-Fi than a newer device on the same network — a router running a newer standard falls back to what the phone supports rather than refusing it, so the difference is specification rather than fault.
What Bluetooth version does the iPhone 11 have?+
Bluetooth 5.0. Version affects range, reconnection behaviour and which accessory features are available. A newer accessory paired here operates at this version's capabilities rather than failing, which is regularly mistaken for a pairing fault when the accessory simply cannot do everything it does on a newer phone.
How bright is the iPhone 11 screen?+
625 nits maximum brightness (typical). Brightness is among the largest single consumers of battery, so outdoor use at full brightness costs real runtime — and poor outdoor readability on this model is usually this figure rather than a display fault.
How long should the iPhone 11 battery last?+
Apple rates it at up to 17 hours of video playback. Judge your runtime against that figure and your own history rather than against a different iPhone — the rating varies widely across this line.
What video can the iPhone 11 record?+
4K video recording at 24, 25, 30 or 60 fps. Resolution and frame rate are the dominant factor in how fast video fills storage, and they push the phone hardest thermally — sustained high-frame-rate recording is the most common reason a camera stops mid-take.
Does dark mode save battery on the iPhone 11?+
Not meaningfully. This model uses an LCD panel, which backlights the whole screen regardless of what is displayed. Dark mode only saves real power on the OLED iPhones, where black pixels are switched off entirely.
The screen is frozen and nothing works.+
Force-restart it first. A frozen phone shows a static image and ignores every input, which is indistinguishable from a failed touchscreen until you restart. If it responds afterwards, you had a software freeze, which is an entirely different problem from a digitiser fault.
The edges of the screen stopped responding.+
Take the case and screen protector off and retest. Edge gestures are the first thing a thick protector or a case lip interferes with, and a protector that has lifted slightly traps air the digitiser has to read through. This is free to rule out.
It registers touches in the wrong place when my hands are wet.+
Water bridges the capacitive field and the digitiser reads it as a finger. That produces both phantom touches and missed ones, and it is not a fault — dry the screen and your hands and it goes away. Wet-hand behaviour in a bathroom is this almost every time.
Part of the screen does not respond at all.+
Drag a finger slowly across the whole screen and map exactly where it fails. A consistent band or region is physical damage — and a digitiser can separate from the display in a drop without the glass cracking, so no visible damage does not rule it out.
It only misbehaves while charging.+
Try a different adapter. A cheap or unearthed charger can inject enough electrical noise into the digitiser to cause phantom touches, and the symptom appears only while plugged in. It is a real cause and an easy one to miss.
Touch is fine everywhere except in one app.+
Then the hardware is fine. An app can capture or mishandle input without any system-level fault, so the investigation belongs with that app — update it, clear its data, or reinstall it. Nothing done to the screen will change it.
The screen went strange after I dropped it.+
Establish which layer. A wrong image is the display; a perfect image that ignores touch is the digitiser. Both can fail from an impact with no visible glass damage, and both are repairs rather than configuration.
I have to press harder than I used to.+
Check the accessibility touch settings before assuming hardware. Touch accommodations and hold durations produce exactly this and are enabled accidentally more often than people expect — they are impossible to infer from the symptom.
The screen is lifting at one corner.+
That is the battery swelling underneath it, not a screen problem. Stop charging the phone, do not press the screen back down, and treat it as a stop condition regardless of how well the touchscreen otherwise works.
Does this answer apply to every Apple model?+
No. It is scoped to A2111/A2221/A2223. Apple iPhone family; connector, modem, camera, biometric and iOS eligibility vary by exact model.
What should I record before troubleshooting touchscreen or screen not responding?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing touchscreen, screen not responding. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Stop for lifted display, swelling, cracks, heat or liquid exposure.
Answer for the exact device and software version shown above.