I’m currently using the Samsung Galaxy S7, and every now and again, I’ll send an MMS (usually a screenshot less than 1 MB in size,) and the message will get hung up in the “Sending” status. The recipient never gets it and I’m unable to delete it (message options are just “Message info.”) Restarting my phone doesn’t work, switching on and off of Wi-Fi networks doesn’t work, nothing works; I’m just stuck re-sending the same message until one finally goes through or, worst case, I don’t notice when this happens and something I thought I sent to someone hours ago never actually left my phone. A little help??