People told you what you needed to know but I’ll add this: the right plan with the right carrier will make cellular either free or $5 a month.

I’m on Verizon and my watch cellular plan is free.

I have those or something similar. I use the caseta lutron diva dimmers and it’s great!

Aqara U100! Has the most ways to open, takes normal AA batteries and I got about 6 months out of a set. Obviously depends on your door but mine didn’t require any drilling. Price is good and it’s actually easy to get, unlike the Schlage has been lately.