I can't anymore use the 3G

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Hi there all,
is a lot of time that i didn't write a post.

Now that i have a N1 ... i have a problem with the H3G Italy... that use a 3G network.
Every time i try to make available the 3G network i can't
... i can use only TIM Italy in roaming... this because TIM have also 2G network.

Is there anythink i can try please ?
i have CyanogenMod 5.0.4.1 for Nexus One... i also root my N1.

Thanks in advance.
Denis

Nobody can help me please ?
Thanks again

Check what frequency your carrier uses. Then compare it to the hardware specs for the N1.

If 3G has never worked on your N1 then it is most likely a hardware issue. If it only happened after you flashed Cyanogen then try wiping and re-flashing.

Hi there,
and thanks for the answer,
...the 3G was working for about 2 weeks, and it was great.On my carrier.

Now i don't understand why i get always:
"Your SIM card does not allow a connection to this network"

I so some thread with this error, but i still can't find how to solve it

Thanks again
Denis

Press *#4636#*#* and check wcdma preferred. If not working check in settings, mobile networks and try to check your mobile
Provider.