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If the wrong PIN is entered three times in a row, your SIM is blocked. To unblock your SIM, you need to key in the PUK. Follow these instructions to unblock your SIM.
1. Turn on your router
2. Connect to Wi-Fi hotspot
Click the Wi-Fi icon.
A connection to the internet is established.
3. Connect to the router configuration page
Key in 192.168.0.1 in the address bar and press Enter.
Highlight the field next to Password and key in admin
4. Unblock SIM
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