I think it's a bad idea to mix the two tbh.
Your preinstalled SMS app is usually the best way to receive SMS, I wouldn't give and unnecessary app permissions to access them!
But it's not E2E encrypted
That's because SMS isn't end to end encrypted in general, you need a encryption client on both sides to achive E2E encryprion aka Singal to Signal or something comparable.
I've never heard of anything that offers secure messaging like Signal, and insecure SMS.
But there are lots of SMS apps that can be used along with Signal. No need for them to be the same app.
It was really convenient when you could just use one app.
That's my current setup, but Signal gets no use because I can't convince anyone to switch
When they dropped SMS support I went to qksms and SimpleX chat. I don't even have Signal anymore.
Sure was nice to have only one app.
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