Usually, it’s the flagship devices that receive monthly security updates and the mid-range and budget ones that get quarterly updates, but it’s not always that clear-cut. Some devices may get monthly updates for the first year or two after they hit the market and then be moved to the quarterly schedule, while some may be relegated to quarterly updates from day one. Some devices, especially those that went on sale more than three years ago, only get security updates when a critical vulnerability is discovered or an old vulnerability gets fixed. credit- sammobile
