The Verge – [instructions cover both iPhone and Android] “No strategy is 100 percent effective, but you can stop much of it. Spam texts can be incredibly irritating — you get a notification and stop what you’re doing to check your phone, only to find somebody is trying to sell you something you don’t want. How can you prevent it? Unfortunately, there are no absolutes in preventing text spam. But there are some ways you can at least minimize the number of spam texts that get through. Here are some strategies to try…”