Here is the detail information about Gevey :
official website : www.gevey.com/
Releaser : Gevey team
User Manual : How to use Gevey sim unlock your iphone4
iphone4 jailbreak Item Available : Gevey SIM/GEVEY PRO
Things you have to know about GEVEY before using
- It works if your network handles 112 calls properly according to the GSM standard. So before buying Gevey SIM, first step is to dial 112 from your phone and check the response.
- If your network validates your IMSI on every incoming call, do not think of buying Gevey SIM.
- Even if your network do not validates your IMSI on every incoming call, you still have to revalidate your IMSI if your iPhone loses power, loses the reception or move to another PLMN. In all of these cases, your TMSI expires and has to be obtained again.
- Not all 3G network will work, for example you will not see T-mobile with 3G service on the iPhone but you will see it working with edge.
- SIM interposer will not harm your iPhone hardware but it can get your account banned from your network provider if they knew that you have spoofed your IMSI and ICCID. Its only in China that GSM companies know this loophole but still don't bother to close it.
- The only way to permanently unlock your iPhone is through NCK.
Gevey sim /Gevey PRO FAQ
Q : Is it illegal to dial 112 to unlock my iPhone?
A : IT IS NOT ILLEGAL to dial 112. You're not suppose to connect the call nor wait long enough to let it ring! Q : Do I need to Jailbreak my iPhone?
A : No Jailbreak is require.
Note: if your iPhone is jailbroken and you are using GEVEY sim, do not do a reset to erase all data and settings.
Q : Will I need to cut my sim card?
A : Yes, you have to cut your simcard to fit the provided GEVEY sim tray.
Q : Is this unlock stable?
A : Yes, it is very stable.
Q : How easy is it to install and setup GEVEY sim?
A : GEVEY sim setup and installation is very simple. Instruction is included with every GEVEY sim purchases.
Q : Do I need leave the GEVEY sim in my iPhone4?
A : Yes, if you want to remain unlock and be able to use your iPhone4 with any carrier.
Q : If you turn off the phone, do I have to redo the procedure?
A : Yes
Q : If I go out of my coverage area and lose signal will I have to redo the procedure?
A : No, you phone is still unlock.
Q : Will this work for Boost Mobile?
A : No, it does not work on Boost Mobile, Metro PCS, nor Verizon
Q : Will GEVEY sim interfer with my iOS or application setting?
A : No
Q : Does 3G and GPRS work?
A : Yes, it can if you have a data plan ith your carrier. Not all carrier will work with 3G services, but all carrier will work with GPRS or EDGE.
A : IT IS NOT ILLEGAL to dial 112. You're not suppose to connect the call nor wait long enough to let it ring! Q : Do I need to Jailbreak my iPhone?
A : No Jailbreak is require.
Note: if your iPhone is jailbroken and you are using GEVEY sim, do not do a reset to erase all data and settings.
Q : Will I need to cut my sim card?
A : Yes, you have to cut your simcard to fit the provided GEVEY sim tray.
Q : Is this unlock stable?
A : Yes, it is very stable.
Q : How easy is it to install and setup GEVEY sim?
A : GEVEY sim setup and installation is very simple. Instruction is included with every GEVEY sim purchases.
Q : Do I need leave the GEVEY sim in my iPhone4?
A : Yes, if you want to remain unlock and be able to use your iPhone4 with any carrier.
Q : If you turn off the phone, do I have to redo the procedure?
A : Yes
Q : If I go out of my coverage area and lose signal will I have to redo the procedure?
A : No, you phone is still unlock.
Q : Will this work for Boost Mobile?
A : No, it does not work on Boost Mobile, Metro PCS, nor Verizon
Q : Will GEVEY sim interfer with my iOS or application setting?
A : No
Q : Does 3G and GPRS work?
A : Yes, it can if you have a data plan ith your carrier. Not all carrier will work with 3G services, but all carrier will work with GPRS or EDGE.
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