Just share the information, this day my brother give me his freind handphone with model Nokia 6630, and the handphone cannot sign in properly the screen message only show "Phone Start-up Failed Contact The Retailer" then i search to google...i found the forum to discus this topic and i try the step..until 3 times and its work thanks to all member at that forum (http://forum.gsmhosting.com) and below the step to solve the problem ay\t your nokia phone 6630:
1.turn phone off
2.press Green+3+*+power on
3.still hold them to see "formating"
4.try aboe step 2 or 3 times
5.if not formated use JAF or PBB for format user area
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