The unlocking process only takes a few minutes, there is no need to wait for the carrier to unlock, and there is no delay time. Just launch the program, follow the instructions in 3 steps to complete the unlocking.
Of course, it is totally legal to unlock any mobile phone or carrier network now.
Yes. After unlocking, you can use any SIM card from any carriers. Your iPhone is no longer restricted by the carrier.
No, your iPhone will be permanently unlocked.
No, you can use your iPhone as usual, restarting the iPhone will not have any effect.
No, the program will not delete any data. After unlocking, your iPhone will still be the same as the original one.