IPhone only receiving half of long text message?

My iPhone 4s is only getting half of long messages that are sent to me. How can I fix this problem? People will resend the message as many as three times and it still doesn't go through to me! This message is important too. How long will I have to wait to receive the second part? Or get this problem to stop? It's really frustrating!

I think its a problem with the sender phone or service

  • Will my message be delivered if sent as text message on iphone? My friend said that she was having phone problems earlier today. My message was being sent as an imessage, but I guess she wasn't receiving everyone of them, just getting the notifications that they were sent to her but she couldn't read them. I then responded to her, but it was sent as a text message this time and i have gotten no response. I'm not as much concerned about her responding or not, I just want to know if she will receive the message.
  • Why won't my 5c send a message as MMS when it's a long message to a non iPhone user? Whenever I type a LONG message to an SMS user (says Text Message in the messaging "box") my 5c won't convert to MMS and the recipient gets the message in dozens of out of order messages instead of the whole fluid message. I have MMS on in Settings. What can I do and why is it doing this?
  • Why did my Iphone 4s only sync half the songs? I had an itunes in which I had a bunch of songs in it. However when I got my Iphone I couldn't sync any of the songs. Finally I plugged it into Itunes, pressed sync download some songs but at least half or less than half were only synced. Why>
  • Only half of my contacts transferred from my iPhone to my Mac? I just got a new mac and plugged it up to my phone. A majority of my contacts transferred from my icloud/ iphone but not all of them did. Contacts is checked in my icloud and the contacts even update when I change them on my phone. Why won't a few of my contacts transfer?