when sending a recieving texts, my message tone only alerts me intermitently and sometime with just a simple click. i thought it could have a connection with the message conversation being open but saw no change and whether the slide was open or closed?

in addition i have a problem with my contact? i have around 100 contacts which have all been saved to the sim and i have selected the option so my contact come from the sim. This is fine as i can find them in contact when phoning someone or texting. however i have a problem when calling someone or texting if say i called my friend matt i would select the contact and call but only the number would appear and vice versa for calling and when recieving texts? can anyone help?