Originally Posted by
Middle_Seat
I've read that 2g utilizess encryption that is easily broken. So, it is best to use a VPN when traveling internationally and using T-Mo's unlimited data?
Is a VPN of use when connected to a URL with https?
The T-Mobile Intl roaming is NOT 2G, It's using the roaming networks 3G/HSPA (or in some few networks LTE), what is 2G is speeds (you are throttled to 128Kb/sec unless you pay for a data pack). You are still on a 3G/HSPA (rare on LTE) NOT on 2G unless you manually choose to join a 2G network.
In regards to 2g crypto, all packets are tunnelled on the roaming network back to T-Mobile's APN (Access Point Network) in the US anyway. You have less of a chance of open snooping on 2G than on Public WiFi's. In any case if you want full security use a VPN but performance will be REALLY slow.
If on HTTPS likely VPN not needed as long as no "man in the middle" attacks on the HTTPS host.