I've got an iPhone 5 running the latest iOS 7 version. (I don't feel like testing the first pre-released iOS 8).
The iPhone randomly displays me "No sim card installed" in a pop-up and I have no provider in the left-top of the menu.
What have I tried:
- Toggling AirPlane mode (this does not work)
- Hard reset (this works)
- Removing the sim card using a paperclip and placing it back (this also works)
What I didn't try:
- Restoring the device I don't see why restoring my iPhone would solve this problem.
What can cause this issue?
I'm still under warranty by the European law (which is 24 months for an iPhone)