http://www.techradar.com/news/your-samsung-galaxy-s8-might-not-be-receiving-every-text

If you’ve noticed that not every text message sent to you on your Samsung Galaxy S8 is getting through, you’re not alone. Numerous other users are reporting the same issue.

In threads on Reddit, users across Verizon, AT&T, T-Mobile, and Sprint are all reporting that some messages people have sent to them aren’t being received, or that there’s a delay in getting them. This seems to happen regardless of which SMS app is used.