Install Olicard 600 modem usb 3g/4g OpenWrt 18.06.4

After installing the modules and creating the interface the connection not stabilizes. need help

In the log:

Mon Sep 2 17:55:49 2019 daemon.notice netifd: Interface 'wwan2' is now down
Mon Sep 2 17:55:49 2019 daemon.notice netifd: Interface 'wwan2' is setting up now
Mon Sep 2 17:55:50 2019 daemon.notice netifd: wwan2 (4621): Waiting for SIM initialization
Mon Sep 2 17:55:50 2019 daemon.notice netifd: wwan2 (4621): PIN verification is disabled
Mon Sep 2 17:55:50 2019 daemon.notice netifd: wwan2 (4621): Waiting for network registration
Mon Sep 2 17:55:51 2019 daemon.notice netifd: wwan2 (4621): Starting network wwan2
Mon Sep 2 17:55:55 2019 daemon.notice netifd: wwan2 (4621): Unable to connect IPv4
Mon Sep 2 17:55:56 2019 daemon.notice netifd: wwan2 (4690): Stopping network wwan2
Mon Sep 2 17:55:56 2019 daemon.notice netifd: wwan2 (4690): Command failed: Permission denied
Mon Sep 2 17:55:56 2019 daemon.notice netifd: Interface 'wwan2' is now down
Mon Sep 2 17:55:56 2019 daemon.notice netifd: Interface 'wwan2' is setting up now

/ etc / config / network

config interface 'wwan2'
option proto 'qmi'
option device '/ dev / cdc-wdm3'
option apn 'Claro.com.br'
option username 'sure'
option password 'of course
root@OpenWrt:~# uqmi -d /dev/cdc-wdm3 --get-versions
{
	"service_0": "1,5",
	"service_1": "1,36",
	"service_2": "1,14",
	"service_3": "1,25",
	"service_4": "1,3",
	"service_5": "1,10",
	"service_7": "1,2",
	"service_8": "1,2",
	"service_9": "2,1",
	"service_10": "2,16",
	"service_11": "1,25",
	"service_12": "1,4",
	"service_15": "1,0",
	"service_16": "2,0",
	"service_17": "1,0",
	"service_18": "1,0",
	"service_20": "1,0",
	"service_23": "1,0",
	"service_24": "1,0",
	"service_26": "1,10",
	"service_29": "1,0",
	"service_30": "1,0",
	"service_31": "1,0",
	"service_32": "1,0",
	"service_34": "1,0",
	"service_41": "1,0"
}
root@OpenWrt:~# ps
12974 root      1368 S    /bin/sh ./qmi.sh qmi setup wwan2 {"proto":"qmi","device":"\/dev\/cdc-wdm3","apn":"claro.com.br","username":"claro","password":"claro"}
13001 root      1224 S    uqmi -s -d /dev/cdc-wdm3 --set-client-id wds 6 --start-network --apn claro.com.br --username claro --password claro --autoconnect
13644 root      1200 R    ps

Don't use autoconnect as suggested here: LTE O2 and T-D1 work, but Vodafone D2 does not
Not sure you really need username and password.