Second day with a stock EU (unlocked) Galaxy S5.
Device is working fine (prompted to update to 4.4.2, G900FXXU1ANCE, Kernel 3.4.0-1181732) and all seemed fine...
EXCEPT a critical (for me) issue in that although PPTP VPN connects fine to the VPN server (confirmed server side), the device seems to loose all its routing and in effect loses internet connectivity (can't connect to anything, websites, Google Play, I can't even get to local addresses on either side of the tunnel).
I am confident that the settings are correct (I have 4 Galaxy devices all working just fine), I have tried adding (in "VPN" -> "advanced options") the DNS server manually without success. For completion, this is unrelated to connection used (i.e. 3G or WiFi) - behaviour is the same for both.
While I am aware of the pitfalls of PPTP, it is what I have to work with at the moment and this issue is critical for me. If it helps, the device reports VPN "software version v1.4 Release 1".
Any clues or help would be most welcome. Alternatively, it goes back ASAP (though I suspect this is a software issue so not sure if replcing the device will solve it).