What Do Symbols On Samsung Galaxy S3 Mean

What does the symbol x mean by my text messages on my, My samsung galaxy ace will not accept incoming text messages, it keeps saying message memory full, i have cleared my phone, deleted all my messages?. What does the h symbol on samsung galaxy s mean ? - there, There is a h symbol in top right hand corner of my android phone, beside the signal bars. what does this mean -read more: what does the h sym?.