Huawei E220 Modem "hang" frequently

I have exactly the same problem -- sometimes it will work fine for hours, and sometimes it will "unexpectedly hang up" every couple of minutes. I wish I could find a solution...

I use the same modem with t-mobile and I do not experience drop outs or the modem hanging.

It may be loss of signal that could be causing your problem.

I would suggest you install cheetahwatch as this will show you the signal strength your modem is receiving.

No problems here with the E220 on T-Mobile UK. I just let the installer run from the USB stick, and it's fine. Really easy to use, either with the 'Web N Walk Stick Manager' or just by dialling from the menu bar in the top right of the screen.

The Mac driver installer found on the stick (and possibly the stick's own firmware) appear to be upgradeable over the web. Mine seemed to be running the latest already, so perhaps that would be worth a try in your case? Of course, that might void your warranty, so you might want to ask Vodafone first.

Hi, i have the same problem too!

In Tiger it was absolutely OK and in Leopard it happens very often.

After 30 minutes or sometimes a little hours, the *connection still remains* but you just can't use the internet anymore. I'm using Launch2Net to connect.

Very strange, it's very very unstable in Leopard!!

Btw, forgotten to say, under windows it works just wonderful...

Hi !

I have the same problem here in Luxembourg with Tele2Tango. It looks like the duration between hangs depends a lot on the bandwidth you use. When I come home in the evening and I start iTunes, it will download tens of megabytes of podcasts. This will result in several hangups every time, while I can be online for hours while I'm not downloading intensively.

You could try to restrict the bandwidth of your system locally and see if it helps... This is done using the terminal and entering these commands:

sudo ipfw pipe 1 config bw 64kbyte/s
sudo ipfw add 1 pipe 1 ip from any to any

These settings will be lost when you reboot. It could help, but I guess that the only real solution would be a new driver from huawei.

Same problem here.

Transmission is known to trigger the hang. See http://forum.transmissionbt.com/viewtopic.php?p=24639

When the connection goes stall, I get the following when trying a ping from the terminal:

ping: sendto: No buffer space available

I get this frequently and I'm on the Vodafone Network in Ireland.
I called & emailed Vodafone about this on a number of occasions - the operator I got on the phone in Data Support gave me an excuse about being in a area that has weak 3G signal.

I tried in Dublin, Cork, Bray and Kilkenny all with similar results in either strong 3G signals or weak.

IMHO (after testing for months) there is a problem with the drivers on mac.

Of course they are happy to take my 45 euro every month though but not inclined to give me the level of service that extortionate price demands.

It is a very strange answer to tour questions (sorry for a so late answeing). Re-run the installer. Dezinstall. Reboot and re-install. It's strange but it works.

It seems to be working. Thanks very much!

I'm using Launch2Net to connect.

I stopped using that app as it caused me connectivity problems in leopard. Just using the standard network system preference pane in leopard I get a very stable connection.