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Unless stated otherwise, backwards compatibility is always allowed, although most cellular service providers have eliminated these slower, older services.In fact, you will find that your service provider will throttle you back to 4G, 3G and/or even 2G speeds (even if those networks no longer exist in your area) when you use more than your "unlimited" connectivity (the FCC continues to allow use of this term, despite its confusion).
Sorry, there was a problem. Please try again later.I only say 2g 4g & 5g as options
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