iPhone 4s had the ios 5 both the ios 5.0 and 5.0.1 both use activation directly from the cellular data .
First use the original sim of iphone and then make a call and end as thus the iphone gets the tmsi from the network and also it gets the use the carrier setting which it gets from its server or it had itself such as apn etc accordingly to the imsi .
When the airplane mode toggled (airplane mode is used otherwise baseband gets reset)with the replaced sim it does not use that tmsi to get the signals (the tmsi is issued by the network at the time of emergency call is dumped on the instance it is ended otherwise it would just die by the simple gevey) and get the imsi from the sim
Accordingly from the imsi it sets the apn number for that and tries to get signal from that sim although it is blocked (use the locked phone and insert other carrier sim and call on it you will hear the ring but phone will not tell you) as the iphone knows that it had the net connectivity of net and can activate the phone via cellular data network (your bad luck if your imsi does not have the apn).
When we click "use cellular data" thebaseband got crashed
the baseband only accept the tmsi(still waiting for @musclenerd confirmation )which comes in the menu activation connect to wifi networks or itunes or on cellular data network and show the signal of the carrier but the activation screen still comes up and show the activation menu again as baseband and activation are different from each other
but after some of the tries the activation screen too also does not come up you have successfully unlocked iphone 4s
And thus when the sim is put back it gets unlocked automatically.....
Hence at last and least the trick is that "you need to create condition such as activation screen and same time the cellular connection option with no valid connectivity when we tap it it tries and than it crashes and signal comes up"
@ raikikon
First use the original sim of iphone and then make a call and end as thus the iphone gets the tmsi from the network and also it gets the use the carrier setting which it gets from its server or it had itself such as apn etc accordingly to the imsi .
When the airplane mode toggled (airplane mode is used otherwise baseband gets reset)with the replaced sim it does not use that tmsi to get the signals (the tmsi is issued by the network at the time of emergency call is dumped on the instance it is ended otherwise it would just die by the simple gevey) and get the imsi from the sim
Accordingly from the imsi it sets the apn number for that and tries to get signal from that sim although it is blocked (use the locked phone and insert other carrier sim and call on it you will hear the ring but phone will not tell you) as the iphone knows that it had the net connectivity of net and can activate the phone via cellular data network (your bad luck if your imsi does not have the apn).
When we click "use cellular data" the
the baseband only accept the tmsi(still waiting for @musclenerd confirmation )which comes in the menu activation connect to wifi networks or itunes or on cellular data network and show the signal of the carrier but the activation screen still comes up and show the activation menu again as baseband and activation are different from each other
but after some of the tries the activation screen too also does not come up you have successfully unlocked iphone 4s
And thus when the sim is put back it gets unlocked automatically.....
Hence at last and least the trick is that "you need to create condition such as activation screen and same time the cellular connection option with no valid connectivity when we tap it it tries and than it crashes and signal comes up"
@ raikikon
