When I connect to my work vpn from my android phone while on verizon 4G, after 10 seconds, the data service on the phone will turn off (4G symbol turns darkgrey) and disconnects the vpn connection. 10 seconds later, the 4G data connection will come back (4G symbol turns white). the vpn application successfully reconnects, and the cycle repeats. This is consistent (happens every time) and it does not matter which tower (location) I'm connected too. My signal is always 3 bars or more and data without the vpn works great. If I use my home or starbucks wifi, the problem goes away. I can duplicate this problem on my work cell phone (which is also verizon) which rules out the specific phone. I can also duplicate the problem by tethering the phone's 4G connection to a laptop and use the laptop vpn application which rules out the specific phone application. I've confirmed with the IT administrator of the VPN that the problem is on my end, the phone is losing the data connection.
It appears that the verizon network is detecting my vpn connection and turning off data. Neither phone plan is unlimited data so I'm paying for data usage. The vpn uses UDP on port 1194. I have tried TCP with the same results. Any advice would be appreciated.
-Kevin