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Please help ! iPhone 4s gevey advice


iMore Question

Greetings !
I just finished up living in China.
I bought an iPhone 4s with China telecom company but my service was china mobile... I had no problems while there
Now, I am back in the USA and I am trying to get my phone unlocked.
I am not too sure if it is unlocked or locked or if it is GSM or CDMA.
I was told that my phone was locked CDMA and was using a gevey chip.
I am still confused because though I had bought my phone in China the carrier without the sim identifies as Verizon 16.0
I have updated my phone to iOS 7.1 and I really want to make my phone work here in the USA.
Is it still possible?
Can someone please recommend if I should use gevey Ultra S or R-sim?
Also if I use a gevey or r-sim do I need to get the one that is Sprint locked because I have not seen verizon version but they both use CDMA
Here is the info:
Model: MD277LL/A
my IMEI begins with: 99


Well-known member
Jan 14, 2011
You only needed to post once question. You have explained your situation quire well but I cannot help. Please be patient and i am sure someone will help you soon and again thank you.