A recent Engadget article clarifies the meaning of a triangle symbol that can appear on Samsung Galaxy phones. The broken triangle icon, featuring two small arrows pointing up and down, indicates that Data Saver is enabled. The article notes that this is a common but not universal symbol, as some icons vary by phone model and carrier, but the broken triangle is the median representation for Data Saver.
Data Saver restricts background internet access for all apps except the one currently in use, which helps preserve mobile data and can also extend battery life. The article describes the trade-offs: while active, apps cannot download updates, sync data, fetch new content, or receive alerts. Users can override this for specific apps by going to Settings > Connections > Data usage and tapping "Allowed to use data while Data Saver is on."
The article also distinguishes two other triangle symbols: a solid triangle with an exclamation mark warns of a charging fault or software glitch, and a plain triangle means cellular roaming is active. Since the source is a single article, there are no differing views to compare; the guidance is consistent throughout.