I have service through AT&T, and I was able to just pop my sim card in everything worked fine without having to adjust any settings. Für Kinder mit etwas breiterem Fuß sind die Schuhe von Keen super. The cord is way, way too long and gets tangled and caught on everything. Im sure I have them on the correct way. I was surprised because the price is so reasonable. These were a gift for my hubs who stated his legs and feet feel wonderful after a full day. Length is good, too. The world didnt go dark when I started playing music, but soft sounds are gone. ,Note lace is Orange (it does look brownish on the web) there is no way this thing worked this quickly.