Be careful, there have been some pretty nasty 0-click exploits in the time Android 11 has been around, so I hope you have still been getting security updates.
In about 5 months, Android 11 will be end of life and won't get security updates anymore, so definitely keep an eye out for anything you may be vulnerable to.
I'm still on android 10 over here. I hadn't even looked until I saw this. Are you saying it's better to get a new phone, rather than just a new battery for my S9?
If you want to keep the phone, a custom rom will get you up to at least Android 13 : LineageOS for S9
If you haven't been getting security updates, I would definitely consider getting a new phone. Especially if you are not one that stays home a lot. The people who will try to exploit things like Bluetooth will be out and about, not walking up to your home.
Of course, Android 11 is still supported as of right now, so if you have been getting security updates when available, then you are good. I just know there are phones running 11 and below that don't even get security updates, so those are the people that need to watch out. You can check your Security Patch Level in settings to be sure.
Be careful, there have been some pretty nasty 0-click exploits in the time Android 11 has been around, so I hope you have still been getting security updates.
In about 5 months, Android 11 will be end of life and won't get security updates anymore, so definitely keep an eye out for anything you may be vulnerable to.
I'm still on android 10 over here. I hadn't even looked until I saw this. Are you saying it's better to get a new phone, rather than just a new battery for my S9?
If you want to keep the phone, a custom rom will get you up to at least Android 13 : LineageOS for S9
If you haven't been getting security updates, I would definitely consider getting a new phone. Especially if you are not one that stays home a lot. The people who will try to exploit things like Bluetooth will be out and about, not walking up to your home.
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There have been a few RCE's for Android 11 and up impacting both Bluetooth and the Baseband.
Bluetooth:
https://www.malwarebytes.com/blog/news/2022/12/update-now-google-patches-android-vulnerability-that-allows-remote-code-execution-over-bluetooth
Baseband:
https://www.malwarebytes.com/blog/news/2023/03/update-android-now-two-critical-vulnerabilities-patched
Of course, Android 11 is still supported as of right now, so if you have been getting security updates when available, then you are good. I just know there are phones running 11 and below that don't even get security updates, so those are the people that need to watch out. You can check your Security Patch Level in settings to be sure.