5G, just like all previous generations of mobile systems, operates on the RF spectrum, which is a broad range of EMF frequencies starting from a few kHz to 300 GHz. For the non-RF and non-technical readers, RF
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If you have an iPhone 12, there's little reason to upgrade right now. That's because the iPhone 12 has a lot in common with the iPhone 13. They both have 5G support, a vibrant OLED 6.1-inch screen, a fast processor,
1) Set up a PIN in a SIM cardThe PIN number is a password that permits access to calls and mobile data use. You can set up a PIN using between four and eight digits (the latter
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