Thought I would provide another update. As far as A13 overall, I do like it. Phone has seemed faster and FP reader is better. I think I'm going to go back to A12 soon though. I have only had the exclamation point once for sure, but have had several times now where people try to call me and just goes to voicemail. Been very frustrating, especially when I check it, all seems normal. I am also going to get a new sim to try that, to check one more thing off the list since I haven't tried that yet.
Hate to say it but I'm tempted to go back to my pixel 4 XL here. I hate having to check my phone all the time and wonder if its even working.