TL;DR
Yes, with care. A small amount of 70% isopropyl alcohol on a cloth is fine for most phone screens; just avoid ports, speakers, and soaking the device.
Phone makers used to warn against any alcohol near screens, but that guidance has shifted as oleophobic coatings and sealed designs improved. Several manufacturers now explicitly approve disinfecting wipes.
The risk was never really the alcohol itself, it's liquid getting into the charging port, speaker grille, or SIM tray, or the coating wearing down from repeated harsh scrubbing.
What Concentration to Use
A 70% isopropyl alcohol wipe or solution is the commonly recommended concentration for disinfecting phone screens, strong enough to disinfect, dilute enough to avoid damaging the oleophobic coating as quickly as a higher concentration would.
How to Clean a Screen Safely
- Turn the phone off and unplug it from any charger
- Dampen a microfiber cloth lightly, never spray liquid directly onto the phone
- Wipe in gentle, straight strokes rather than scrubbing in circles
- Avoid the charging port, speaker grille, camera lens edges, and buttons
What Alcohol Cleaning Can Wear Down Over Time
Frequent, harsh cleaning can gradually wear the fingerprint-resistant oleophobic coating on the screen, making it smudge more easily. Occasional cleaning, weekly or after illness, is unlikely to cause noticeable wear; daily aggressive scrubbing is where it adds up.
What to Avoid
Skip bleach, hydrogen peroxide, and household glass cleaners with ammonia, these aren't formulated for phone coatings and can degrade them faster than isopropyl alcohol. Never submerge the phone or pour liquid directly onto it.
A Simpler Everyday Option
For daily smudges without disinfecting, a dry or slightly water-dampened microfiber cloth handles most fingerprint and dust buildup without any chemical exposure at all.
A lightly dampened cloth with 70% isopropyl alcohol is safe for occasional phone cleaning. Keep it away from ports and speakers, and skip anything stronger than that.