Nokia 6303c mobile phone First problem is that Sent text messages sometimes appear in my Inbox. When I delete them another one appears. When I delete they are deleting from the Sent items as well as the Inbox. Also, when the phone is on Silent the text message alert still sounds.

I think there's a spam message from ur friends or service provider. Whenever a spam appears, the phone behaves the same way. So, better keep ur services messages blocked.
Clear ur phone memory so that all the messages get deleted.
Njoy......:)

Your system in phone memory is overload. To make more space you can delete all history in your browser or saved message from your inbox or outbox if you save message in your phone memory or uninstall unusable applications or games from your phone.

Hope this help.

go to messages/inbox & press options & click "Select all" then press option again & select "Delete" do the same with sent messages.

you need to delete some of your texts also go to your setting and click auto delete on it will delete the last one everytime you fill up your box so you will never run out of space.

you are getting this message when you are starting your mobile right? and it will continue for long time ... So leae wait upto it gets ready and once it is ready delete all messagesin your inbox,sent items,outbox and all..and restart your mobile. This wont appear...This problem becoz of shortage of memory....You arre stores more messages in your boxes.That message will appear in several minute. Once you ded this in the sense this problem will get over.Hope trhis will help you...Thank you...

i have the same problem with my nokia n70.
i think its because of a visrus, cause im on inthernet downloading stuff 24-7.
when ive reseted it via *#7370# it worked. you should try it.
but be sure to back up your files via pc, because it erases all of ur content..
good luck

Hi, did you checked your MMS or email? it looks like unread MMS.
Rate me if it helped. Thanks.

Check your message's memory

it is becoz it was mms massage or some file it dosen't support by mobile so u must reset ur mobile ans delete that file

they won't if you want to find them look in your sent messaes.