My mobile phone is Philips c700. The bell is always short, but it can't exceed 5 seconds. The problem is that the bell is gone before I finish speaking. Please help me.

If your ringtone is a song set by yourself, only the content before the song will be played when you send a text message. If it is the default music that comes with your mobile phone, you should modify the settings again in Profile Mode in System Settings. If not, then there may be something wrong with your mobile phone and you need to go after sales.