Sierra 881u 3G failed

[firefly888]

I got a sierra881u already unlocked and voice enabled through dc-unlocker software, the problem is my 881u only connect to gprs/edge connection, i tried to set it to 3g all, it can detect the network and has a symbol 3G but the 3G symbol is not in circle, whats that mean ? the network only shows for couple minutes and then "searching"

please help, thanks in advanced

[Vincentas]

You should check the connection settings. Try other provider sim. Does it work on 3G?
Does other modem find 3G in your place?

[firefly888]

You should check the connection settings. Try other provider sim. Does it work on 3G?
Does other modem find 3G in your place?

yes i tried it with same modem, same simcard, same location, the other 881u works fine on 3G network.

[Vincentas]

It may be a modem problem, but it is not related to the unlock. Unlock is successfull, if modem accept other provider sim cards.

[firefly888]

It may be a modem problem, but it is not related to the unlock. Unlock is successfull, if modem accept other provider sim cards.

is there any way to fix it ? i tried different firmware but no luck, I also did dissamble the modem to see the antenna condition but everything seems in order, it's so weird that I can find the 3G network but can't connect to it.

[Vincentas]

Sorry, we do not know what may be wrong and how to fix it.

[firefly888]

Sorry, we do not know what may be wrong and how to fix it.

oh well, thanks for your help, I think it's the MC8781 module problem, the GPS works fine tho.