What sim card do i need to use i have the latest sciphone form hongkong and i cant use my 3g sim card from optus and the guy at the shop couldnt help me so what sim do i need to use living in australia using sciphone on optus? Thanks.

take the phone into an optus shop , buy a new sim card and have them set it up to the optus service provider

yes - optus uses a different frequency range for 3g data than what Telstra uses.
The phone you have a ZTE T303 works on 3G UMTS 850
optus 3g runs on 3g umts 700

http://www.ztemobiles.com.au/T303.htm

http://www.optus.com.au/shop/support/answer/3g-or-4g-mobile-network-sim-card-compatibility?requestType=NormalRequest&id=1644&typeId=5

To Unlock Nokia E63 from 3 Network AUSTRALIA,Use Unlock code...Visit the site Prounlocking.com/nokia/rs8wp8/ get code and Unlock it..Then use with Optus network sim card.

call to costomercaer now your id proof give an any mobil shop

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.

I see that this had been a while. The reason that your Sim cad doesn't work could be various: 1. Make sure that your phone is quad band, if it's a tri band then make sure that ATT works in 1900mhz. If it works only in 850 and your i68+ is a tri band, (which is not suppose to) then it will never work. As far as I know all i68+ original are quad band, some fakes i68+ are sold as quad band but are actually tri-band. 2. If you ATT sim card is a 3g card, it won't work either. These phones are not yet equip to work with 3g. I hope this clear up at least a little of your doubt with the Sciphone.

Is Optus an 3G network? Some USIM cards doesn't work with non 3G devices.

Ask chinamanuals.com

i have a ph-hb758 phone bought from hongkong via ebay.com ..When i put in the sim card i see the message "No Service". I cant call and sms anyone..Pliz can u help me.

I've setup Nokia phones with 2G SIM's and I've had it running under GSM frequencies using a Optus 2G GSM SIM card; works fine. I've also put 3G SIM's in 2G Unlocked Phones and haven't had any issues before.

Have you tried putting in a 3G SIM and had problems?

Is your phone locked or unlocked?

Be careful of the terminology, some people get "3G" mixed up with the company "3" which is owned by Hutchison.

For example, if the phone is locked to 3, and you try and put an Optus/Voda/Telstra/AT&T SIM inside it will not work.

If it's just a Generic Branded 3G phone you should be fine.

Make sure your phone is unlocked, then purchase a SIM online or back at the AT&T store.

You should be able to take your phone back to the "stupid people" at the AT&T store and have them register a 3G SIM and you shouldn't have any problems; just tell them it's a unlocked phone.

Here are some helpful links:

http://www.planetomni.com/FAQ_sim.shtml