Hi desire35,
It seems you're having trouble connecting to your cellular connection, and we can help.
Let's try searching for a carrier settings update:
Update your carrier settings on your iPhone or iPad - Apple Support
Does your iPhone give you any messages or errors when you restart it? Does it show searching or no service?
If yes, try these steps:
If you see No Service or Searching on your iPhone or iPad - Apple Support
You may have to contact your carrier for further assistance. Let us know if this helps and we'll work together with you.
Thanks for using the Apple Support Communities.