Open the iphone's "settings-general-about this machine-model", you can see the model, serial number, WiFi address, Bluetooth related digital display, this information represents a number of important related to the origin of information. Take "md299zp/a" as an example, here the "zp/a" means "Port version", the query to the iphone official inquiries.
Second Step
2. Version Identification method
For IPhone5 please look here:
First, the United States IPhone5
1, ATT no lock 2 net
(Note: Parts of the United States have locks, need to unlock their own, another warm tip: att unlock more than 10 pieces, the IPhone 5 is the same, do not be said)
Model Md634ll =16GB Black att
Model MD635LL =16GB White att
Model Md636ll =32GB Black att
Model MD637LL =32GB White att
Model Md644ll =64GB Black att
Model MD645LL =64GB White att
Model MD638LL =16GB Black att
Model MD639LL =16GB White att
2, v version of the three-net general
(Note: V edition is the only one price more than the port version of the U.S. version of the machine, the official said never locked)
Model MD654LL =16GB Black Verizon
Model MD655LL =16GB White Verizon
Model MD658LL =32GB Black Verizon
Model MD659LL =32GB White Verizon
Model MD664LL =64GB Black Verizon
Model MD665LL =64GB White Verizon
3, S version of the machine
(Note: 5 generation just released, s version of the test is not able to send text messages; but the iOS 6.1 Beta1 firmware update, can unlock the S version of the SMS problem)
Model MD656LL=16GB Black Sprint
Model MD657LL =16GB White sprint
Model MD660LL=32GB Black Sprint
Model MD661LL=32GB White Sprint
Model MD667LL =64GB Black Sprint
Model MD668LL =64GB White sprint
Second, Canadian IPhone5
Model MD293C =16GB Black Slate
Model MD294C =16GB White slate
Model md295c =32GB Black Slate
Model md296c =32GB White slate
Model md642c =64GB Black Slate
Model md643c =64GB White slate
Iii. IPhone5, Australia
Model md297x =16GB Black
Model md298x =16GB White
Model md299x =32GB Black
Model md300x =32GB White
Model MD662X =64GB Black
Model md663x =64GB White
Iv. New Wave IPhone5
Model Md297za =16GB Black
Model Md298za =16GB White
Model Md299za =32GB Black
Model Md300za =32GB White
Model Md662za =64GB Black
Model Md663za =64GB White
Five, English version iPhone5
Model md297b =16GB Black
Model md298b =16GB White
Model md299b =32GB Black
Model md300b =32GB White
Model MD662B =64GB Black
Model MD663B =64GB White
Vi. Hong Kong IPhone5
Model MD297ZP =16GB Black
Model MD298ZP =16GB White
Model MD299ZP =32GB Black
Model MD300ZP =32GB White
Model MD662ZP =64GB Black
Model MD663ZP =64GB White
VII, Germany
Model MD297DN =16GB Black
Model MD298DN =16GB White
Model MD299DN =32GB Black
Model MD300DN =32GB White
Model MD662DN =64GB Black
Model MD663DN =64GB White
VIII. Japan
(Note: Japanese version of the machine, tested with a lock.) Cards are said to be unlocked for use)
Model MD297J =16GB Black
Model md298j =16GB White
Model md299j =32GB Black
Model MD300J =32GB White
Model MD662J =64GB Black
Model MD663J =64GB White
Nine, Korean version
Model Md297kh =16GB Black
Model Md298kh =16GB White
Model Md299kh =32GB Black
Model Md300kh =32GB White
Model Md662kh =64GB Black
Model Md663kh =64GB White
X. China Unicom Contract Machine
Model MD297CH=16GB Black
Model MD298CH=16GB White
Model MD299CH=32GB Black
Model MD300CH=32GB White
Model MD662CH=64GB Black
Model MD663CH=64GB White
XI. Telecommunication Contract Machine
Model ME039CH=16GB Black
Model ME040CH=16GB White
Model ME041CH=32GB Black
Model ME042CH=32GB White
For iphone4s please look here:
In order to facilitate you to inquire about their own iphone4s is a lock or no lock machine, now part of the iphone 4s model announced as follows, for everyone to refer to:
iphone 4S all have slots, the merchant said "no lock U.S. version of the iphone 4S", this batch of machines because the price is low, compared to other versions of nearly thousand yuan, but there is no definitive lock on the issue, there are users of this batch of machines different carrier version of the test.
GSM card can be used to explain the use of mobile and Unicom SIM card, otherwise not.
Sprint Bare Metal: Can plug GSM network SIM card, CDMA can write number can not 3G (uncertain future whether or not to lock the GSM network, CDMA network without hindrance)
Sprint contract: Can plug GSM network SIM card, CDMA can write number can not 3G (not sure whether the future lock GSM network, CDMA network without hindrance)
Verzion bare Metal: Can plug GSM network SIM card, CDMA can write number 3G (not sure whether the future is locked GSM network, CDMA network without hindrance)
Verzion contract: Can not plug GSM network SIM card, CDMA can write number 3G (c net without hindrance)
Att bare metal: Can plug GSM card, can not write number (not sure whether the future lock GSM network)
ATT contract: Can not plug the GSM card, can not write the number (uncertain whether the future is to lock the GSM network, whether it can be stuck)
Britain, Canada, Australia, France, etc.: can plug GSM card use, can not write number.
America's three biggest carriers (mostly with locks)
At&t
MC918LL/A-16GB Black
MC919LL/A-32GB Black
MD269LL/A-64GB Black
MC920LL/A-16GB White
MC921LL/A-32GB White
MD271LL/A-64GB White
Sprint
MD377LL/A-16GB Black
MD379LL/A-32GB Black
MD381LL/A-64GB Black
MD378LL/A-16GB White
MD380LL/A-32GB White
MD382LL/A-64GB White
Verizon
MD276LL/A-16GB Black
MD278LL/A-32GB Black
MD280LL/A-64GB Black
MD277LL/A-16GB White
MD279LL/A-32GB White
MD281LL/A-64GB White
No lock version
United Kingdom
MD235B/A-16GB Black
MD242B/A-32GB Black
MD258B/A-64GB Black
MD239B/A-16GB White
MD245B/A-32GB White
MD261B/A-64GB White
Australia
MD234X/A-16GB Black
MD241X/A-32GB Black
MD257X/A-64GB Black
MD237X/A-16GB White
MD244X/A-32GB White
MD260X/A-64GB White
France
MD235F/A-16GB Black
MD242F/A-32GB Black
MD258F/A-64GB Black
MD239F/A-16GB White
MD245F/A-32GB White
MD261F/A-64GB White
Canada
MD234C/A-16GB Black
MD241C/A-32GB Black
MD257C/A-64GB Black
MD237C/A-16GB White
MD244C/A-32GB White
MD260C/A-64GB White