raspiberry pi 成功连接联通4G

raspiberry pi 成功连接联通4G

用的是联通卡，百度了很多相关案例均不成功，最后去除INIT2, 加上Carrier Check = no 成功上网！

/f 有效配置内容如下：
[Dialer Defaults]
#Auto DNS = on
Init1 = ATZ
#Init2 = ATQ0 V1 E1 S0=0
Init3 = AT+CGDCONT=1,"IP","3GNET"
Carrier Check = no
ISDN = 0;
Modem Type = Analog Modem
New PPPD = yes
Phone = *99#
Modem = /dev/ttyUSB0
Username = card
Password = card
Baud = 9600