Ask Tii - How to test iPhone to see if properly unlocked for T-mobile before selling

Hi Rob,

I just finished listening to episode 136 and I want to try and sell my iPhone 3G. Thanks for the great tip of installing iOS 3.1.3 and unlocking the iPhone in order to get top dollar for it. I followed the link titled "Unlock iPhone 3.1.3 05.11.07 Baseband with Blacksn0w | Redmond Pie". Any idea how I can test to see if I successfully unlocked my iPhone if I don't have a T-mobile sim card? I successfully get to the end of Step 7 and then don't know how to proceed when it gets to the following section "Make sure you get signals with your T-Mobile SIM card". I wouldn't feel right about posting the iPhone for sale online if I'm not able to verify that I successfully unlocked it. Any ideas or tips you may have would be most greatly appreciated.

Regards,

Mr. Ed

 

Hi Mr. Ed,

Two choices.

1. Find a friend that is on T-mobile and ask them to borrow their sim card from their phone to test it out.

2. Be creative and go to your local T-mobile store and tell them you mother (or some make believe relative live out of town) is on t-mobile and you want to give her your iPhone and you just unlocked it - but need to test it before you mail her the iPhone.  And ask if you can test with one of their sim cards.

Good luck

Rob W