How to disable android system updates?

Anyone know how to disable Android system updates on a Galaxy S5? My phone works great when it is running KitKat, but when it updates to Lollipop, it overheats and the battery life is HORRIBLE. The only solution I've found so far is to hard reset my phone back to factory settings, which is a huge pain, but it's even worse when the phone automatically updates to Lollipop again without asking. I've had to reset my phone 4 times within the last 2 months, and I'm beginning to hate an otherwise great phone. Please help!

Accepted answers

Snn5

It could be the configuration of the app, could be that it doesn't check for an update until a certain time. It could be a number of things. I would start with the apps I had to have, that I needed first. Then install in order of priority. Might help narrow it down if an app is the issue. App developers are updating their apps to work on LP, some more quickly than others and it might just be a matter of time until the right update for the problem app is installed. Then, the problem would be solved.

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Snn5

If your phone has already updated to Lollipop, even a factory reset won't erase the update. Once updated you cannot revert to Kit Kat. I'm wondering why the phone, after FDR, asks to update again.

Verizon_Support

I appreciate all the troubleshooting you have done so far termitedew! Software is suppose to improve your phone functions not make it worse. I will make sure we get your phone running like it used to. When you did the master reset did reinstall all your applications again?
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termitedew

Yes, I reinstalled all my applications. The phone works great for about a week or two, then the Android system updates again and it's all downhill from there.

Snn5

When you say that the Android system updates again, do you mean the operating system updates again or apps on the phone update again? I can't see why the OS would update again but I can see where a particular app update might render a few issues.

termitedew

The OS updates. The phone came preinstalled with KitKat, so when I restore it to factory settings, the phone works fine. But at some point it's upgrading itself back to Lollipop, which kills my battery life and makes the phone overheat.