Hi everyone, I know this has been mentioned here numerous times, however no one seems to give a clear response. If I order the T-Mobile iPhone 5s from the Apple Online Store for full retail, then take it to Europe and to the following steps, respectively: 1) Open the box and take out the iPhone 2) Pop out the SIM tray 3) Throw the T-Mobile nanoSIM in the trash (or anywhere suitable) 4) Put in a nanoSIM of a local provider (Orange in my case) 5) Turn on the iPhone Will it work? Is it completely and definitely true that I do NOT have to activate it with T-Mobile in the U.S. beforehand? Has anyone had experience with this yet? Thank you so much for clear answers!