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How to Fix ‘Invalid SIM UICC Not Working’ Error

Encountering the dreaded “Invalid SIM UICC Not Working” error can be frustrating, especially when you’re trying to use your phone for calls, texts, or data. This issue typically arises when there’s a problem with your SIM card or its connection to your device, but don’t worry—there are several steps you can take to resolve it. […]...