When you look at the lock screen it is not blinking,but when you unlock the phone it starts to blinking until reaching 100%.
Sent from my Nokia Lumia 925 using Tapatalk
If the blinking of charging icon is normal then why does my phone keep on disconnecting after every few seconds from PC? I'm using the same cable which I use for charging. After drivers installation, I restarted my PC too and changed the USB ports but still it keeps on disconnecting.