Hi, I have more than 25000 SMS messages at the moment. I don't delete them and backup/restore with SMS backup app each time I change phone or do a factory reset. Default Note 4 SMS app is very slow. I don't have idea is it slow because of the big amount of messages or is it lagging by design. I use Google SMS app from Google Play and it doesn't lag at all (all the actions I do goes lightning fast). But Samsung SMS app lags almost on every step I make (texting is extremely painful). Could anybody confirm that there's no lag with a small amount of messages (or 1000 messages - default setting for autodelete)? Does anybody have experience with huge number of messages? Thanks!