The below wvdial script is faster than Network Manager which takes several seconds to get ready

[Dialer Smart]

Init1 = ATZ

Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0

Stupid Mode = 1

Modem = /dev/ttyUSB0

Phone = #777

Idle Seconds = 900

Password = your card pin

Modem Type = USB Modem

Compuserve = 0

Baud = 921600

Auto DNS = 0

DNS Test1= 8.8.8.8

DNS Test2= 8.8.4.4

Dial Command = ATDT

Ask Password = 0

ISDN = 0

Auto Reconnect= 1

Username = Your Orange Phone number