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LTE Upgrade cost has gone down :)

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When my MCU1 was replaced due to the eMMC design flaw, I got LTE. I don't notice any significant difference from 3G. Several years ago, when I was in for service, I got a loaner with LTE and didn't notice any significant difference then, either. Don't waste your money.

I'd like to disagree. I bought the parts and did the upgrade myself. There were a few spots where I didn't get any AT&T 3G network, but do get good LTE signal. Streaming stutters are almost gone. Also, maps loading and long navigation through supercharger calculations are a bit faster. While it may be attributed to better AT&T signal vs better 4G chip, isn't that what we are looking for in the upgrade?
 
It's now $200 to do the LTE upgrade, Update to 3G Services

Screen Shot 2021-07-18 at 11.56.42 AM.png
 
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Here's my estimate for my LTE replacement appointment a month or so from now. Is my service center trying to screw me or what?

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I would definitely ask them because their website says "‘LTE Upgrade.’ This LTE modem upgrade is available for $200 USD plus applicable taxes and includes installation."
What additional items are they referring too?