Android / Samsung browsing issues on BR1 MK2 LTEA

Have several units that will connect easily. Any PC or Mac or Apple device will have no issue browsing. The Android / Samsung devices that connect, may or may not get one page up, the end with an err_connection_refused message. Have tried the gamut of all Firmwares 8.0.0 - 8.1.3, Wi-Fi Encryption levels, DNS caching, specified DNS settings via DHCP.

Any one else had something similiar?

One more thing to note. If you connect with a VPN on your Android device - you can browse seamlessly. The carrier we are using is providing a 10.x.x.x address to the router on connection

I have no issues here. Do you have any outbound rules or stock config simply connected WAN?

Stock config. Have tried with other manufactures routers - works fine. So bizarre.