Why my iPhone always no service

Sovannating Said:

"Why my iPhone always no service"

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Troubleshooting SOS and "No Service":

What may have Happened:

• Find Out here: If you See No Service, Searching, or SOS on your iPhone or iPad - Apple Support
• As it reads: "If you see No Service or Searching in the status bar on your iPhone or iPad (Wi-Fi + Cellular), your device isn't connected to a cellular network."