I just got my Maxis iPhone 4. Last unit of the day. But when I check the phone rite, the home button a bit recessed and wobbly. The Power and volume buttons also wobbly. They shake about a bit when u push on it. Is it possible to ask Maxis to change the phone for me? And must it only be done at the Maxis centre where i bought the phone or any Maxis centre also can?