The only app that works between my Note4 and Tab S 8.4 is 'mysms' . The problem is that it's bland with really no customization options. Why dont the tablets have a better variety of texting apps like the phones do? Every one I've tried to download on my tablet either says "not compatible" or have to adjust "permission settings" to allow it access. I can't even access the permission settings on the Tab s. Any thoughts amigos?