3G usb modem

Gabriel

Hello,

Is it possible to use a HSDPA/HSUPA USB modem to connect to the internet? As I said in another discussion, I am using a ZTE model K3571-Z USB modem. I connected the modem to USB, but I did not see any means to configure or control the modem in settings.

Thank you.
Gabriel

Gabriel

So, does Emteria support USB HSDPA/HSUPA modems?

IKS

We did not test it yet. Maybe with an appropriate driver module? You have to check the kernel log after connecting.

roxette

@IKS said:
We did not test it yet. Maybe with an appropriate driver module? You have to check the kernel log after connecting.

I think the problem isn't the driver module, my Vodafone USB stick is working just fine.
It's the appropriate application you should use to establish the connection.
I tried that app in the below video, it works fine and i can establish a connection but no data coming through
Perhaps it's related to the VPN problem?

https://youtu.be/q1q5RgaAMfI

Gabriel

I searched the log file but I did not find any entry related to the USB modem detection. Does emteria.OS have drivers for some other USB modems? I am planning to use it in a remote location with no available WIFI network.

roxette

@Gabriel said:
I searched the log file but I did not find any entry related to the USB modem detection. Does emteria.OS have drivers for some other USB modems? I am planning to use it in a remote location with no available WIFI network.

Oh, my bad ... i didn't read that you are using a ZTE model as my Huawei USB stick is working without any additional driver.
Nevertheless, even if you found the appropriate driver, how you gonna make it work?
Which application you wil use to establish the connection?

Gabriel

What Huawei model do you have?

Normally if you have access to a ttyUSB, you can send AT commands to connect to the mobile service provider, and after that you have to start a pppd over another ttyUSB. At least that is what happens on linux.

roxette

It's K3765
The above app sends AT commands to establish a connection but i still can't browse the internet.
I think @IKS doesn't have any broadband USB stick to test ... that's the problem.

roxette

@Gabriel said:
What Huawei model do you have?

Normally if you have access to a ttyUSB, you can send AT commands to connect to the mobile service provider, and after that you have to start a pppd over another ttyUSB. At least that is what happens on linux.

Here is to prove that my Huawei K3765 modem is working on raspbian stretch.
My question, how you will make it on android without installing usb-modeswitch or wvdial?

Bus 001 Device 013: ID 12d1:1465 Huawei Technologies Co., Ltd. K3765 HSPA

--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT99#
--> Waiting for carrier.
ATDT99#
CONNECT
--> Carrier detected. Starting PPP immediately.
--> Starting pppd at Sat Dec 23 19:10:49 2017
--> Pid of pppd: 4443
--> Using interface ppp0
--> pppd: �
--> pppd: �
--> pppd: �
--> pppd: �
--> pppd: �
--> pppd: �
--> local IP address
--> pppd: �
--> remote IP address
--> pppd: �
--> primary DNS address
--> pppd: �
--> secondary DNS address
--> pppd: �

roxette

@IKS, is it possible to compile sakis3g?
I compiled it on raspbian stretch & it works fine.

roxette

Here is sakis3g source code link, usb-modeswitch is included
https://github.com/Trixarian/sakis3g-source

Gabriel

Usually you can simulate usb modeswitch by ejecting the drive created by the modem when you plug it in. After ejecting that drive, it switches to modem mode and creates several ttyUSB devices. One of them is for AT commands, and another is for data.

I have no idea how the rest can be done, but since Android is running on phones, there must be a way to make it work on Emteria also. I would do it myself, but the problem is I have no idea how Android is built or works. I am pretty good at Linux, but not in Android 🙂.

The only reason I need a usb modem is that I want to is it in my car, and integrate it to the CAN bus, and steering wheel buttons. But that is another story, about how to acces the GPIO in Emteria... 🙂

roxette

I was able to make it work on linux, raspbian stretch and even windows (using the latter OS i was able to make and receive sms/voice calls)
I want to use it in my car as well, because the portable wifi hotspot created by my old phone is an ad-hoc connection and it seems that Android doesn't like it :smile:
Will wait till Igor verifies whether it is possible to compile sakis3g or not.

roxette

I want to mention that i tried ppp widget 3 however it just shows checking access as in screenshot.
I think the following drivers/files are needed to make it work which are missing from Emteria OS
ppp_async.ko
usb_wwan.ko
option.ko
cdc-acm.ko

Bdw: you can try that widget even though you don't own a 3G USB stick because it can connect to phones bluetooth modem.

roxette

On the other hand, i read some tutorial about how to manually get the 3G USB modem recognized.
The following command is needed
echo "USB\VID PID" > /sys/bus/usb-serial/drivers/option1/new_id
However, option1 folder doesn't even exist :neutral:

schake

The problem with sakis3g is that it is essentially just a bash script. Android doesn't come with a fully-featured and compatible bash shell, it just has the minimalistic toybox.

roxette

Thanks for replying @stefan,
What about that path : /sys/bus/usb-serial/drivers/option1/new_id
option driver and new_id aren't there, Were they deleted from the kernel?
I believe they contain something related to GSM modems.

albdom

Someone is working in this feature?

SanderK

Any updates regarding this feature? I'm interested in using 4G USB-modems as well.

roxette

I followed the below tutorial but ended up with the following error
https://forum.xda-developers.com/showthread.php?t=2172914
Is there anyway to add PPP kernel support?