How can I upgrade the firmware on an unlocked iPhone 3GS?

Q. I have an unlocked iPhone 3GS that I am currently running on TMobile service. It is running the 3.0 firmware and I would like to upgrade it to at least 3.1.2 in order to run certain apps. I bought the phone unlocked and am unfamiliar with the process. Is there any tutorial available that can explain what I need to do to upgrade?

A. to unlock the iphone 3.1.2 There are many guides explaining the procedure

What is the difference between an unlocked iphone and a "high quality" copy iphone from China?

Q. What is the difference between an unlocked iphone and a "high quality" copy iphone from China? I can't understand why they are so expensive on eBay and other sites offer them for less.
What about those copies that actually look like iPhones with Apple logos all over them. They are indistinguishable in the pictures but how do they work? How do you go online with them?

A. most copy iphone like sciphone i68, hiphone,p168,i9,mini apple,ect..they do not have smart operater system (they all use MTK solution)at all.and so does other feature like 3g, wifi,gps,and no 16GB.but they do have bluetooth,shave change music function,slide screem.But i heard now the ciphone company are developing newest ciphone 6 generation,it will have smart system of 450mhz CPU,128 mb ram+256rom,windows CE 6.1 system,gps,wifi,bluetooth,3.5 inch screen. the price of copy on ebay are really a bit high. the normal price in shenzhen i can told you, for i68 is about 100-110USD.the ciphone 6 will charge 180USD as well.

i am a china buy agent freelancer and business assistant/guide at china mobile area,i located at shenzhen, help people to get mobiles directly from shenzhen wholesale market or the factories. if any demanded you can contact:raymondpy35@hotmail.com

Can an unlocked iPhone be compatible with Sprint service?

Q. A friend of my dad has a nice mint black iphone (the old one) and my dad told me that its unlocked and im thinking about buying it. But i have sprint service. So is an unlocked iPhone compatible with sprint service?

A. it should be compatible.....the other person who just answered you is NOT right. I know for a fact that unlocked iPhones are compatiable with tmobile. i can't say yes for sure for sprint, but ask your friends dad if you could slip in your sim card to check then buy it...

i'm confident it should work. sim cards should work in any unlocked phone.

Powered by Yahoo! Answers