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Originally Posted by Dexteryout
I know it's an old thread, but anyone aware, if the 3G sim can be updated to 4g, as it's not an actual sim, and just a bit of software?
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It's nothing to do with the SIM. It's the radio hardware that would need to be upgraded. Audi are certainly now fitting 4G radio hardware into all their new models so one would assume BMW will also be following suit however I can't see any reason for a retro fit.