For Iphone 4 turbo sim
perfect version for iphone 4
Works for V4.2, V4.1

Gevey Unlock Turbo Sim Firmware 4.1 4.2.1 for iPhone 4

Unlock sim card for iphone 4 4.1/4.2.1
NEW GEVEY SIM - UNLOCKS PHONE VERSION 4.1 & 4.2

As we know , Phone 4 (2.10.4 and 3.10.01 can not  unlocked by software .

Gevey have release one Turbo sim .it can unlock 4.1(baseband
02.10.04) and 4.2.1 (baseband 03.10.01), with Gevey Turbo sim
Your AT&T Locked phone is free to use .Also it can support 3G
network .Internet and Mail.

Like Before firmware Gevey .easy Used . No Jailbreak needed! No
software unlock! Not breaking your warranty!

A new method to unlock Phone 4 running iOS 4.1 or iOS 4.2.1 on baseband 2.10.04 or 3.10.01. 

Gevey team succeeded in unlocking the device using a Gevey SIM.

This is done with the help of a device called SIM interposer, which is placed between the SIM and the baseband hardware.

UNLOCK solution for Iphone 4 4.1/4.2.1
INSTRUCTIONS INCLUDED THIS IS Made in China Item

How to use the Gevey phone 4 unlock sim card?
1.Close your phone ,Put the unlock with your sim card into the sim
solt .then put inside phone
2.Open the phone ,Click accept when the SIM welcome Menu
display on the phone
3.Do  not do anything until get one signal.when start will display "no
server"
4.call Emergencynumber"112" .then hung up after 2 second.
5.Open the FLy model .and close agian .Then will display "sim card
activation failed",After a while then displays "no sim card
6.The "no sim card" after the flight mode and then immediately turn
off. Sim card activation fails there will be a few seconds and then
have the signal it!