Ec25 wvdial doesn't exceed 3MB connection speed

IoT Modules LTE Standard Module
1

Hi, I’m using an EC25 with wvdial to access the Internet from an embedded system. However, the connection is very slow. The modem always logs into the network within 10 seconds, but the connection speed isn’t what I expected. I’m using USB v2.0.

WV Dial
Init1 = ATZ
; Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CGDCONT=1,“IP”,“internet.xxxx.xxx”
Stupid Mode = 1
Modem Type = Analog Modem
ISDN = 0
Phone = *99#
Modem = /dev/ttyUSB2
Username = { }
Password = { }
Baud = 460800
New PPPD = yes
Auto DNS = 1
Stupid Mode = 1

This setting can be improved. Is there any recommended software for this connection?

2

Performance is influenced by many things.
Have you checked the signal strength?
I would recommend you to test the usbnet with the qmi driver first.
PPP is worse than qmi.