I am using Micromax Yu Yureka. I'm unable to connect with PC using USB connection after recently upgrading my device to Lollipop 5.0.2. But it was working in Kitkat perfectly.
1 Answer
go to settings>developers options>and check the USB debugging option.(it should be on).This might help or try hard factory reset.
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Please back your claim, why USB debugging needs to be on for a simple USB connection? It seems you understood OP's question about "USB connection" as USB debugging and not data-transfer, which makes this answer useful. However, OP didn't say that, so please fill the details by yourself.– Firelord ♦Commented Jun 9, 2015 at 19:43