Hi,
After restoring my iPhone using iTunes, then when I insert simcard, then a message of "SIM not valid" is popping out. Plus, I have also contacted Telstra (carrier) to unlock my iPhone, but then they told me that my iPhone is already unlocked. And now I don't know what I'm supposed to do
iPhone 5s, iOS 9.0.1
From where did you buy the phone originally?
With which carrier are you currently using it?
~Lyssa
A phone that locks after being updated or restored was hacked to unlock it at some time in the past. Once it has been hacked and restored there is no reliable way to unlock it legitimately. You can try a DFU restore, but that isn't a guarantee.
I bought it from Apple Store in Melbourne Australia. I was using vodafone when I was in Melbourne. But when I called Apple Support Service, the advisor told me that the iPhone is locked to Telstra. I had called both Vodafone and Telstra. Both of them told me that the iPhone is already unlocked. But the problem still haven't solved yet.
What is DFU restore? How can I do that? Now, I can't even connect my iPhone with iTunes. A "SIM not valid" is popping on my laptop when I connect my iPhone with iTunes.
i've tried to do the DFU restore. But it does not solve the problem. The "SIM not valid" message still appear. What should I do now?
Contact your carrier and request that they unlock the phone for you.
Nothing more to do unless you get the phone legitimately unlocked.
Only the carrier that the phone is locked to can unlock the phone for you and if you do a restore and then get a sim error message, then this means that the phone has been hacked to unlock it sometime in the past.
Contact the carrier and get them to unlock it.
SIM not valid after restore
