is this type of hacking possible?

when i was snap chatting my gf i was also texting her at the same time so i would close the app and switch text to snap chat multiple times. My text finally froze up and it wouldn't send messages. so id have to continuously close the iMessage app and reopen it and the message would vanish because it didn't fully send. so sending didn't work. then i went back to snap chat and I clicked on her name in snap chat and a phone number appeared above where it said snap chat at the top in the green bar it was a bunch of numbers. almost like a phone number. now I'm worried. did someone hack my snap chat or my phone? because then i went on safari looking for answers on hacking snap chat and it kept closing on me and wouldn't let me on safari even when i closed safari. is this a glitch? or a virus? is my phone remotely hacked? every time i go to safari it closes ONLY on yahoo answers. and my messages will say sending 1 of 2 forever. and when i close the app it just vanishes to the last message me or her sent. its really weird. if it is a remote hack could the hacker damage my phone internally somehow or what could he do?