How to Clean Your Phone Without Damaging It

Your phone goes everywhere you do, so it gets grubby quickly. Cleaning it is easy, but the wrong product or tool can strip the screen's coating, push dirt deeper into the ports or let moisture in where it does not belong. Here is how to clean every part of a phone safely, and what to keep well away from it.

Before you start

Power the phone off and unplug any cable. Take off the case, and the screen protector too if it is already cracked or lifting. That way you will not trigger apps while wiping, and stray moisture is less of a risk.

You need very little kit:

• Two clean, lint-free microfibre cloths – one slightly damp, one dry.
• A soft, dry brush, such as a clean soft toothbrush or a small make-up or paint brush.
• A wooden or plastic toothpick for ports.
• Isopropyl alcohol wipes at around 70%, if you want to disinfect.

Cleaning the screen

Phone screens have an oleophobic coating – a thin oil-repelling layer that helps fingerprints wipe away easily. It wears off naturally over time, but harsh cleaners speed that up dramatically. Once it is gone, the screen feels draggy and smudges more.

For everyday grime, a dry microfibre cloth is usually enough. For stubborn marks, dampen a corner of the cloth with a little water, wring it out until it is barely moist, and wipe gently. Never spray anything directly onto the phone; apply liquid to the cloth instead so it cannot run into the earpiece or edges.

Can you use alcohol wipes?

Yes, in moderation. Apple, for example, says a 70% isopropyl alcohol wipe can be used gently on the hard, non-porous exterior surfaces of an iPhone, and Samsung gives similar advice for Galaxy phones. Wipe lightly, avoid getting moisture into openings, and do not use them every day if a dry cloth will do – frequent use still contributes to coating wear.

What never to use

• Window or kitchen cleaners – many contain ammonia or other solvents that attack screen coatings.
• Bleach and hydrogen peroxide – too harsh for coatings, seals and finishes.
• Abrasives – scouring pads, toothpaste "scratch removers" and baking soda pastes can leave permanent haze.
• Kitchen roll and tissues – they shed fibres and can be surprisingly scratchy on glossy backs.
• Neat alcohol or nail varnish remover – acetone in particular can damage plastics and adhesives.
• Running water – even if your phone is water-resistant.

Charging ports

A blocked charging port is one of the most common reasons a phone suddenly charges slowly or only works with the cable held at an angle. Pocket lint builds up at the back of the port and gets compressed every time you plug in, until the connector cannot seat fully.

1. Shine a torch into the port to see what you are dealing with.
2. Use a wooden or plastic toothpick to loosen packed lint gently, working along the sides and back wall.
3. Tip the phone port-down and tap it lightly, or brush the debris out with a soft dry brush.

Never use metal objects such as pins, paper clips or SIM tools, which can scratch the contacts or short them. Avoid blasting compressed air straight into the port as well; it can drive debris deeper and some manufacturers advise against it. If charging is still unreliable after cleaning, check the cable before blaming the phone – our USB-C charger guide explains why worn cables are a common culprit.

Speaker grilles and microphones

Speaker and earpiece grilles collect a mix of dust, make-up and skin oils that can muffle calls. Brush them with a soft, dry brush, working across the holes rather than pressing into them. For stubborn build-up, press a piece of low-tack tape or a little blue reusable putty against the grille and lift it away; the grime comes with it. Do not poke anything sharp through the mesh, as there is often a delicate membrane behind it.

Camera lenses and the back of the phone

Camera lenses smudge easily, which often explains hazy photos or flare around lights. A quick wipe with a clean, dry microfibre cloth usually fixes it. Glass and metal backs clean the same way as the screen. Textured or matte backs hide grime, so use a slightly damp cloth there.

Cleaning the case

Dirt trapped between the case and the phone acts like fine sandpaper, so clean both regularly. How you do it depends on the material:

• Silicone and TPU: wash in warm water with a drop of washing-up liquid, scrub gently with a soft brush and let it dry completely before refitting.
• Hard plastic: wipe with a damp cloth and a little mild soap.
• Leather: wipe with a barely damp cloth only and follow the maker's care advice; soaking or alcohol will mark it.
• Fabric: spot-clean with a damp cloth and mild soap, then air-dry.

If a clear case has turned yellow, cleaning will not reverse it. The discolouration is in the plastic itself, which is a sign it may be time for a replacement – see our guide to phone cases for options that age better.

How often should you clean your phone?

A quick dry wipe of the screen every day or two keeps smudges down. Give the whole phone, case off, a proper clean every couple of weeks, and check the charging port every few months or whenever charging becomes unreliable. If you have been ill, or the phone has been somewhere grubby such as a hospital or public transport at peak time, an alcohol wipe over the exterior is sensible.

If liquid gets inside

Should a phone get wet while cleaning, switch it off, wipe it dry, and leave it to air-dry with the ports facing down. Do not use a hairdryer, which can overheat the battery – heat is something we cover in our battery health guide – and skip the bag of rice, which does little and can leave dust and starch in the ports. Many phones warn you if they detect moisture in the charging port; wait for the warning to clear before plugging in.

Gentle tools, a damp rather than wet cloth and a little patience are all it takes to keep a phone looking and working like new.