I work on a construction site and while drilling on the concrete floor my cell phone was in my pocket. The whole dirt went straight into the speaker.
If I call now and have speakers on, or listen to music, there's such a broken or annoying sound - especially when talking on the phone. You can hear something in there.
I blew several times, did not help; Vacuum cleaner also not. Do I have to disassemble the phone completely or are there extra shops that specifically clean; or do you have other tips?
"Special shops…" I can't say, since the place is dependent.
We have a rep shop here that does something like that, they gave me compressed air spray, with which you can blow out the membrane "with feeling".
Is it possible to buy this spray on the internet?
Yes, either you ask in the "hardware store" or resident electronics shop or https://www.voelkner.de/products/1370291/LogiLink-RP0001-Druckluftspray-inkl.-Spruehschlauch-brennbar-400ml.html?ref=19
