- All photos blurry = dirty lens (wipe with a soft cloth first)
- Blurry only on one camera = lens glass cracked or camera module fault
- Blurry after a drop = cracked lens glass or dislodged OIS module
- App freezes mid-focus = force close the camera app and restart
- Blurry since water exposure = camera sensor affected, needs a look
Start here: wipe the lens
The single most common cause of a blurry phone camera is a dirty or smudged lens. Phones spend a lot of time in pockets, bags and hands — and natural oils transfer onto the camera glass constantly without you noticing.
Use a clean microfibre cloth — the type that comes with glasses or sunglasses — and wipe the rear camera lenses gently. A dry corner of a clean t-shirt also works. Do not use your finger (that just moves oil around), and avoid paper towels which can scratch.
If that clears it up, you’re done. If not, read on.
Other causes to check before assuming it’s broken
Phone cases — especially cheaper ones — sometimes have camera cutouts that are slightly misaligned. They can partially cover the edge of a wide-angle lens or apply a very slight pressure that causes blur. Remove the case entirely, take a photo, and see if it changes. If it does, the case is the problem, not the phone.
The camera app can get stuck in a bad state, particularly after an OS update. If photos are blurry but the preview looks fine, or if autofocus seems to lag and never lock, force close the camera app completely. On iPhone: swipe up and swipe the app away. On Android: square button → swipe the camera app off. Then reopen it. A full phone restart often fixes persistent app-level issues.
If only your front camera is blurry, a screen protector that doesn’t cut out cleanly around the selfie lens is often the cause. Lift the corner of the protector near the front camera and take a photo — if the blur disappears, the protector is the issue. Replace it with one that has a proper cutout for your model.
When it’s actually a hardware fault
Once you’ve ruled out a dirty lens, case, and app glitch, there are a few hardware causes that need a repair.
Modern phones have a thin protective glass disc over each camera lens. If your phone has been dropped, this glass can crack — sometimes in a hairline crack you have to look closely to see. A cracked lens scatters light as it enters the camera, causing a foggy or blurry look on every photo. This is a straightforward repair — we replace the lens glass without touching the actual camera module underneath.
Most modern phone cameras use Optical Image Stabilisation (OIS) — a tiny floating element inside the camera module that counteracts hand movement. If the phone has taken a hard knock, this component can get dislodged. The symptom is a wobbly or shaky preview, photos that are blurry with no obvious pattern, or a faint rattling sound when you shake the phone near your ear. This needs a camera module replacement.
Even water-resistant phones aren’t waterproof forever — the seals degrade over time. Moisture inside the camera housing causes a persistent fogginess or condensation effect that wipes and restarts won’t fix. You might see it appear and disappear depending on temperature (moisture condenses in cold, clears in warmth). Bring it in so we can check the seal and dry out any internal moisture.
Hold your phone up near your ear and shake it gently side to side. A very faint rattle is normal — that’s the OIS magnet floating freely as designed. A louder clunk or loose rattle means something has shifted internally. If the rattle appeared after a drop and your photos went blurry at the same time, the camera module needs checking.
Front vs rear camera — which lens is affected?
Testing both cameras separately narrows down the fault considerably. Open the camera app and switch between front and rear. If only one camera is blurry, the fault is isolated to that module — ruling out app or settings issues which would affect both. If both are blurry, start with the wipe-the-lens check and go from there.
On phones with multiple rear cameras (wide, ultrawide, telephoto), test each by switching between them in the camera app. A fault often shows up only on one. This tells us exactly which lens glass or module needs attention — which keeps the repair straightforward.
Camera still blurry after trying all of that? Come in.
We’ll check the lens glass, the camera module and the seal in a few minutes — free diagnosis, no obligation. Clapham Junction, open 7 days, walk-ins welcome.