- A characteristic that allows a gadget to operate in two separate frequency bands is known as dual band. In the context of mobile phone networks, a dual band device provides users with more roaming options.
- Signals on specified frequency bands are used by mobile phone networks, and a phone must support those bands in order to work with the network. The ability of a phone to work with two separate bands is referred to as dual-band. It's crucial to be specific about the bands you're talking about.
- GSM networks in the Americas use the 850 MHz and 1900 MHz bands, whereas GSM networks in Europe, Brazil, Asia, and Africa use the 900/1800 MHz bands.
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