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Thanks very much guys. I'll try the safemode first, let it run under 20% and see if it enteres STAMINA mode still. If it doesn't then ill try the restore and delete some unneeded apps.
So I ran my phone from 30% down to 10% while in safemode (took a fair bit of work chewing all that battery with nothing running!) and it did not turn on STAMINA mode. Didnt adjust my volume, disable auto-sync, change my brightness or disable my WIFI. So I've just now wiped my phone and am in the process of making it usable again with just using the bare essentials, although google is not making it easy as it's reinstalling all the old apps again. Just uninstalling as fast as I can
Hopefully this pans out!
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