The last android device I used for any length of time was the Samsung galaxy tab pro 10.1. It had three major bugs:Three in a row... but I have yet to see anything like that on Android phones. I've just seen it happening on iOS phones. So the fix came where needed. Or not?
The tablet would crash when trying to cast movies and TV shows bought from google play via chrome cast to my TV.
When connected to a Bluetooth device such as headphones or a speaker you couldn't stream over wifi.
The screen would become distorted when watching a video and the only way to fix it was to reboot the tablet (there were debates on forums as to whether this was a software or hardware problem).
All were known bugs reported widely on various forums. I had the tablet for 6 months and in that time I did not receive one software update. These bugs were never acknowledged by Samsung and up until the time I sold it there was still no news on when there would be an update.
If you don't own a nexus device this situation is par for the course with android devices.
There will always be bugs with new software, however Apple are the only ones who acknowledge and respond swiftly to said bugs. Imagine in the space of less than two weeks they released two patches for two separate issues.