Not always.. Once I decided not to upgrade. But it used to pop up every now and then and I used to cancel the notification. Once by mistake, I pressed ok and t

Not always.. Once I decided not to upgrade. But it used to pop up every now and then and I used to cancel the notification. Once by mistake, I pressed ok and there was no way to cancel the update. Then it bloated my phone(Samsung S4) like anything and phone keeps complaining out of disk space and I have to keep deleting my photos(and also uninstall apps) for getting more and more space for the stupid android it's own junk