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Revision to iPhone Invalid or No SIM

Evan Gattuso

* Update your OS. You can check for new versions under ''Settings > General >Software Update.''
* Check for a carrier settings update. Occasionally your cell phone provider will push updates to the way your phone can connect to its network. To prompt a cellular update, be sure you're on WiFi and navigate to to ''Settings > General > About.'' If an update is available, it will initiate a pop up to install it.
+[comment]solutions[/comment]
== SIM Card ==
* If no other fixes have made a difference, the board is likely to be the issue. Replacement is the easiest solution in this case.
* It may be repairable on the board level, but microsoldering skills are necessary, seek a local repair shop with these skills if this is outside your skill set.
+[comment]conclusion[/comment]
-== Related Pages ==
+== Additional Resources ==
* [[iPhone Will Not Connect to WiFi|iPhone Won't Connect to WiFI|new_window=true]]
-* [link|https://www.youtube.com/watch?v=kHRfpHa4AZs&t=2606s|Video: iPhone 7 Signature Failures|new_window=true]
+* [link|https://www.youtube.com/watch?v=kHRfpHa4AZs&t=2606s|Video: iPhone 7 Signature Failures]
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