I am in need of a separate degoogled phone for some things that require high level of privacy (nothing illegal).

I have 2 phones that I can use. One of them is my business phone (it has my business number, apps, data and that sort of stuff) which is now running an OS with all the Google spyware because it’s necessary for the apps to work. I can reinstall everything on the second phone and use the first one as the secure device since it supports everything I need. The problem is that it has some issues on vanilla ROMs that I don’t really want to deal with and the reinstalling will take a lot of time.

The issue with the second phone is that it is rocking an old MTK chip and rooting instructions are let’s say a bit beyond my ability to understand. I still want to use it without Google if possible though. So can I degoogle its stock ROM with ADB or something? And is it worth trying or there will still be some vulnerabilities?

EDIT: to clear some possible misunderstandings, the reason of why I need a separate secure phone is that I am forced to use a very invasive proprietary app that I’d prefer just keeping on a separate device instead of trying to limit its spyware abilities with firewalls and that kind of stuff. I don’t trust the last solution much. Also I can’t use it in a VM because I need it to always be accessible wherever I am and yk carrying a PC is not an option

    • GolfNovemberUniformOP
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      7 months ago

      I wasn’t begging for money. I said that as a joke. You are being rude now though

      • InputZero
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        7 months ago

        So I’ve read a lot of this thread and I felt I needed to say one thing to you. I don’t know why you need such extensive data security but that’s none of my business.

        What I wanted to say is that if you need this much protection for a business, ie you’re protecting many other people’s sensitive data, hire a professional to do it right the first time. Doing a half assed job then paying someone else to fix it is twice as expensive.

        If you’re doing this to protect your own personal data then the best way to do it right eventually is through trying and learning from your mistakes. Obviously try to avoid them but it’s impossible to not make any.

        • GolfNovemberUniformOP
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          7 months ago

          My business phone doesn’t need special security. I only need it for one specific app

          • InputZero
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            7 months ago

            I saw you said as much in your post but I felt it was important to double check. Good luck with your endeavor.

            • GolfNovemberUniformOP
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              7 months ago

              Thank you. I’ll just switch all the business stuff to that second phone. Its old security patch may be an issue but well I don’t have many other options