1. Edge Finance app doesn't work. When you try to add the stocks it shows 'Server error'. Anybody experience the same?
2. Dial keypad lags. I got over 1000 contacts, but I did not expect that from this phone. Any solutions?
I do not have that many contacts @nerikaci but the ones I do have stored in my Samsung Stock contacts app do not lag.
Try a soft reboot by turning the phone Off and On.
In regards to the Stock App do you experience the same on Wifi and Mobile Data connection ?
You could try clearing the phones system files cache which does not delete your saved info.
Current Phone ~
Samsung Note 20 Ultra 5G SM-9820 _256Gb SnapDragon 865+
Samsung One Ui 2.5/ Android 10.