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CarPlay, OnStar 4G LTE, WiFi and Signal Strength

3395 Views 6 Replies 4 Participants Last post by  Wrover
In my Gen1 volt I had a dashboard mount for my iPhone, and I plugged it into power only, not into the USB connector (I put my music on a USB Flash drive and left that in the car, so my music was always there). With my iPhone mounted up on the dash, signal strength was good.

I'm now driving a Gen2 volt and using Apple CarPlay (which I like) but now the phone is sitting down low in the console and I think it gets worse signal strength.

The Gen2 comes with 4G/LTE WiFi and boasts better signal strength - this makes sense as the antenna is on the roof and cars can use higher transmit power than handhelds.

So my question is: if I'm going to use CarPlay and put my iPhone in the console, would it be smart to set my iPhone to use the Volt's WiFi? In other words, rather than going iPhone LTE->USB->Volt, the data pathway would be Volt LTE->WiF->iPhone->USB->Volt.

The OnStar data is normally pretty expensive, but since the Volt and my iPhone both use ATT, apparently I can add the Volt to my ATT MobileShare plan for $10/month.

An alternative would be to keep using CarPlay, but to mount the volt up higher on the dashboard for better signal strength.

Fellow Apple and Gen2 Volt cult members - what's the best answer?
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Further thought - does CarPlay actually work the way I say? If the Volt has its own data service, can it provide that over USB to the iPhone? Or must it go over WiFi?
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