ayid I don't know anything about the phone, I'd just like to make one point. You mentioned that it runs on KaiOS, and that you're therefore assuming that it may lag.
I'm not convinced that KaiOS itself is the issue, but rather it's alcatel that makes junky phones, and that gives KaiOS a bad rap.
And since Nokia generally makes good products, I don't think this phone should be written off just bec it runs on KaiOS.