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Wormydog1724

2021 AT4 Apple CarPlay & WiFi connection issue?

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I have a 2021 Sierra AT4 with Apple CarPlay (iPhone 11 Pro Max)

 

I purchased the GMC/AT&T WiFi data package once my trial ended.

 

On a trip this past weekend the Apple CarPlay worked great, wirelessly which I guess is a new feature for the 2021 Sierra.


The WiFi also worked great as my kid's iPad and my wife's computer both did fine on the 5 hour trip through New Mexico without ever losing connection.

 

The issue I think I'm having is my phone being connected to the truck via Apple CarPlay, then it isn't connected to the WiFi.


I know this because I like to listen to Pandora stations and there are plenty of deadspots on the drive where I lose cell service and the Pandora quits, but the iPad and computer still had plenty of service when connected to the truck's WiFi.

 

Also the little WiFi symbol wasn't showing a connection on the phone or on the CarPlay screen.


My phone is Verizon and the truck is AT&T, maybe not important other than Verizon losing service in rural NE NM and evidently the AT&T service is better through the truck.

 

On the way home I screwed around with disconnecting my phone from the truck, disabling CarPlay, forgetting the WiFi on my phone and trying different orders of reconnection.


I finally achieved connection with CarPlay AND my truck's WiFi with my phone, confirmed from NOT losing Pandora through the same deadspots and on the CarPlay screen it showed the little WiFi connection symbol.


However this morning when i get back in my truck I'm connected only to the CarPlay, not the WiFi.


Having to disconnect and forget every time is going to be a major PIA. 

 

Has anyone else experienced this or have a solution?

 

Tonight I will mess with it some more and figure out exactly what I have to do get both connections, maybe there's a shortcut I can figure out.

 

Edited by Wormydog1724

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I don’t think the 2020 versions allow for WiFi CarPlay so consider yourself lucky!

I bet the issue is your phone is connected to Verizon when you hop into the truck. Does it find and connect to the WiFi OK? I’d fully expect if the phone is on the internal WiFi it should connect. The only gotcha is if you plugged in the phone to charge. I believe CarPlay will always default to a cable connection. See if there are any CarPlay options to select order of connectivity.

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The 2020 has Wi-Fi but not wireless Carplay. I opted not to pay for Wi-Fi and use my cell phone hot spot if I want Wi-Fi in the truck. I have Verizon and find it's coverage has been very good. You may wish to contact Verizon to check your phone for the latest tower and firmware updates. I suspect that since you are using two cell carriers (cell phone and truck each have their own cell carrier per your note) that both will experience dropouts separate of each other. I bet that Verizon will , at times, work where AT&T drops out.

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So here's how wireless CarPlay works.  TL/DR: It operates via a discrete wifi; your phone cannot be connected to two different wifi networks simultaneously.

  • Turn truck on
  • Phone pairs to truck via bluetooth
  • Truck sends bluetooth signal to phone saying, "Bro, why don't you go over here and join my discrete wifi.  Don't tell your friends tho."
  • Phone connects to truck's discrete wifi; Apple CarPlay operates over this discrete wifi
    • Phone does not display a wifi signal at all
    • Discrete wifi (i.e. CarPlay wifi) and the truck's 4G LTE WiFi are two separate networks
  • Phone displays the cellular data network to which it is connected.  Your cellular data network is how your phone gets data, and in turn, how any services work (i.e. streaming content, such as Pandora) on CarPlay.
  • You can't connect to your truck's wifi and run wireless CarPlay simultaneously because your phone can only be connected to one wifi network at a time.

Some thoughts.  First, your truck's wifi is basically a cell phone data plan turned into a hotspot.  So, it'd be like using your cell phone to create a hotspot, then connecting all your family's devices to that hotspot.  Know what'll happen?  All your devices will have slow data, because they're going through only a single hotspot which has limited bandwidth.  If your devices have their own cellular data plan, they'll be much faster using that versus all connecting to the truck wifi.  You should really only use the truck's wifi for devices that don't have cellular data.  Second, even if you could connect your phone to your truck's wifi AND run CarPlay simultaneously, you wouldn't want to due to limited bandwidth (see first thought).  

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First, my truck is 2021 and has wireless CarPlay.

 

I screwed around with the connection orders and now it has solid connection using Apple CarPlay while also being connected to my truck's AT&T WiFi.

 

It's not about having fast or slow internet, it's about having internet at all. I live in BFE and drive 5 hours through even worse BFE. My phone loses connection maybe for an hour all together where my truck's WiFi doesn't.

 

Thanks for the "help", I think, but I got it figured out.

 

 

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For those wondering,

 

I disabled CarPlay through the truck settings, forgot the trucks WiFi on my phone, restarted my phone, connected to the truck WiFi, connected to Apple CarPlay, restarted the truck.

 

I'm not sure if all of that was necessary but the phone now automatically connects to the truck's wifi and apple carplay every time.

 

I think I may have connected to carplay before setting up my wifi and maybe that was causing the issue from the start, I really don't know though.

 

Again this is a 2021 Sierra 1500 AT4

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For those wondering,
 
I disabled CarPlay through the truck settings, forgot the trucks WiFi on my phone, restarted my phone, connected to the truck WiFi, connected to Apple CarPlay, restarted the truck.
 
I'm not sure if all of that was necessary but the phone now automatically connects to the truck's wifi and apple carplay every time.
 
I think I may have connected to carplay before setting up my wifi and maybe that was causing the issue from the start, I really don't know though.
 
Again this is a 2021 Sierra 1500 AT4

I’ll try this today and see if it works for me.


Sent from my iPhone using Tapatalk

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