Network check
ping google.com
ping 8.8.8.8Speed check
When you are using OpenVPN official iOS App, OpenVPN Connect, you may seen this error massage
PolarSSL: error parsing config private key : PKCS5 - Requested encryption or digest alg not available
cd /etc/openvpn/easy-rsa
sudo ./easyrsa set-rsa-pass opvnuser