You can follow the SIM eject method for Lightning ports above to clean your Android’s microUSB ports as well, but I don’t recommend that as your first option. Why? Because the internals of a microUSB port has more delicate connectors that can easily bend or snap off under too much pressure. So it’s best to try the most non-invasive approach first.
My favorite non-invasive approach is the trusty can of compressed air. You can pick up a can of compressed air at any hardware store. Now before you go all gung-ho and shoot 40 PSI’s of pressure into your micro USB port, make sure you give the can of compressed air a quick release–blow some out into the space around you. This will knock off any condensation that has built up in the nozzle. Condensations, of course, is water–and you don’t want that anywhere near your microUSB ports.
Next, start with short bursts of compressed air into the port. These should be 1-2 second bursts. Do them at an angle so the lint has room to move around and fall out. After 5-6 bursts all the lint should be free. Shine a flashlight in to make sure and plug in your microUSB cable to test to see if you’ve got a firm connection again.
If the compressed air doesn’t get all the lint out, the try the SIM eject tool or toothpick trick above. That will do it for sure–just remember, be very very gentle poking around a microUSB port so you don’t damage the fragile connectors inside.
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