My phone has started having serious issues with sending all texts whether they include images or not. I am consistently getting a failed symbol and having to re-send. Many times, when I can finally get passed the failed symbol, the message continues to try and send for indefinite periods of time. My phone, in many cases, is showing full bars from my celllular service provider and the Wifi signal in ALL cases is super strong.
In addition, notification sounds that I have applied to texting change on their own. Sometimes it is the sound I have set, other times it's another notification sound. Other times, there is NO sound so I don't know when someone has texted me.