I just get sciphone i68, and i inserted the sim card [virgin mobile precisely] and the network bar shows 5 bar, which suppose to indicate that the network is ok, but if i try to call, it always indicated network failure.

Hi,the problem is obviously from the network settings on the sciphone,here is a solution,

1,Try to re-insert the sim card in the phone.

2,Go to the mobile connections on your sciphone and ensure the radio(service) connection is switched on.

3.If after these steps,the problem persists,then it seems your sciphone has a network problem which can only be fixed by a mobile phone engineer.

Take care

Hmm it seems that it doesn't support your country signal Mhz,go to the page you bought the phone and check this

example
Operating Frequency: GSM
Network Frequency: 850/900/1800/1900MHz

after google what frequency your country supports

You need to get a non-3g sim card, or get a 3g phone. Only the very latest Chinese mobile phones are 3g compliant, as China (apparently) does not have a 3g network as yet. Unfortunatley you can't modify the sim card or the phone to fix this problem.

We had the same problem on both of our new sciphones. After long hours of research we finally found an easy solution to it so hope this helps.

1) Shut down your phone completely (you will know because a red sign will come up on your phone and you have to confirm that you are shutting it down).

2) Take our your battery and then your sim card

3) Make sure that your sim card is in the right way. (It has to be on the highest slot, not the one closest to the bottomof the phone, and the metal plates have to be facing down, or towards the phone).

4) Reinsert your battery and then start your phone up again

5) Go to restore factory settings and plug in the code 1122 when it asks for one. NOTE: Your phone will reboot, and when it turns on it should be okay.

We tried everything and this is the only thing that worked. We had t-mobile sim cards for both phones and it worked fine. Good luck!

-twins-

flip the sim card over and cutoff the other sim slot example"if chip is face down make it face up" if that doesnt work switch to other sim slot and repeat the steps above if that doesnt work you can go to this link for more help

http://www.freewebs.com/sciphone/index.htm

Ask chinamanuals.com

the i68 is a dual sim phone, try inserting your sim in the other sim card spot. the default password is 1122

http://www.i9forum.co.uk/phpBB3/viewtopic.php?f=6&t=512&st=0&sk=t&sd=a&#p2103

Try this link maybe they can help.
or

mysciphoneshop.com

i m using sciphone i68 in india
here new rules coming for china mobile registration so how i register my mobile

Slide the sim card back and forth slowly in the correct slot oriented correctly make sure you're in the correct slot, there are two. Mine did the same thing and it fixed it.