Haven't specified the part. If it is upper sliding part, might be because of strip complaints and changing the strip will do.... If its lower panel, changing the key pad may be necessary......
mission
September 2008
You need to bring it to a cell phone repair shop and get it cleaned out. it should cost about $15.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix mobile phones.