My device is not detecting the SIM card after upgrade to Windows 10 Technical Preview phone build 10.0.12534.56
I installed the newest build of Windows Technical Preview onto my device. After the installation completed, my device no longer recognizes my SIM card and I see “No SIM”.
This is a known issue that occurs for a small portion of users who upgrade to the current Windows 10 Technical Preview build (10.0.12534.56).
To resolve the issue, unfortunately you’ll have to complete a reset on your device. Before doing so, please ensure you have backed up any important content such as your photos, videos, contacts, etc.
The device reset can be started here:
Settings> System> About> (Reset your device)
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