Turbo VPN provides more than one protocol for our users in iOS and Android.
If you are using Automatic / Open VPN (which we generally recommend), you could try connecting over IPSec / ikev2 when you have difficulty keeping a strong connection. However, we recommend sticking with Automatic/OpenVPN whenever you can for the best experience.
UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) have some technical differences. UDP supports faster connections, it is used when speed is desirable and error correction is not necessary. For example, UDP is frequently used for live broadcasts and online games.
On the other hand, TCP supports more stable connections and is harder for network administrators to block.
For iOS devices
For Android Devices