Good but.... – Number Shield Review

I have ben using the app for a long while now. Recently the app has been unable to synchronize and throws errors. When you have a large number of blocked numbers the update can take 30min or longer. There is a limitation of 40 million numbers. Would like to have seen a block all except contacts. But when the app is throwing sync errors it does not work. Will be looking at other apps now...:(
Review by Jerry Griffin on Number Shield.