pigulici: As a person who have to live with Win10 I can tell you that: as OS it is good, as privacy and update side, it is bad, what I did at me : installled with all off options(options about privacy), got to options and try to off what remain, installed O&O ShutUp and enabled all options, disabled Windows Update/Firewall from services.msc, instaled Comodo Firewall on Custom mode(so he ask me every time for allow/deny if anything try to get on internet), once a mont I activate/run Windows update and after, run O&O SU, half a year and still work good, so almost can close what M$ 'lesten' to me.
As a former Win7 user, I can tell Win 10 it is better (aside 1 game who was a pain to make it work in win 7 and no work in win10).
For now I have my laptop in dual boot win 10 with Linux Mageia , but most of time I stay in Win, linux it is more for sensitive work(like bank work)...
Btw, at least at win 10 you can easy shut down most of spy, but to my smartphone with android, I just give up...
Gnostic: On the Smartphone you can replace your smartphone OS with Cyanogen mod, MIUI, OxygenOS etc
(Make sure to BACKUP your current smartphone OS if things go wrong)
https://wiki.cyanogenmod.org/w/About http://oneplus.wonderhowto.com/how-to/dont-like-cyanogenmod-here-are-4-great-alternative-roms-for-your-oneplus-one-0163954/
I tested out with Cyanogenmod and MIUI. With great satisfaction, I can finally block Google Play and other apps permission to access my contact numbers, SMS, Storage, Location, Calender, Camera etc etc.
Even though these apps force me to accept giving it permission to things that does not make sense, I can disable the permission that does not make sense. (Why a app that help me read need my location, camera, contact and SMS?)
http://www.guidingtech.com/42045/cyanogenmod-privacy-guard/
Check if your current phone is support by Cyanogen mod as it may not support newer phone / less popular phone, that's the downside of a non profit community project. On the upside, the community will know if someone is baking in malicious spyware to the code because it is not lock out by proprietary software by for profit companies.
Yeah, I have a not so known Huawei, so no support, it is my first one (it have almost 2yrs), for the next one I will look to have more support on this side...