Edit Intune QR Code to include wifi and Cellular Data

So, you are not talking about an Intune QR but a Zero-Touch QR.
If i compare your Wifi settings etc. it looks fine but i have never seen a expiration data after the QR code and also different data arrangement (different from what i successfully generate with my own tool for differnt MDM).
Are you sure it shouldn't be something like this:

 {
"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "XXXXX",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://play.google.com/managed/downloadManagingApp?identifier=setup",
"android.app.extra.PROVISIONING_WIFI_PASSWORD": "XXX",
"android.app.extra.PROVISIONING_WIFI_SECURITY_TYPE": "WPA",
"android.app.extra.PROVISIONING_WIFI_SSID": "FlatNetwork",
"android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE": {
"com.google.android.apps.work.clouddpc.EXTRA_ENROLLMENT_TOKEN": "XXXXX",
"expirationDate": "2025-12-31T18:29:59.920206Z"}
}

Your QR code is invalid due to the "qrCodeContent", and the expiration line. Here's a version which should work for you - 

{
"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "XXXXX",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://play.google.com/managed/downloadManagingApp?identifier=setup",
"android.app.extra.PROVISIONING_WIFI_PASSWORD": "XXX",
"android.app.extra.PROVISIONING_WIFI_SECURITY_TYPE": "WPA",
"android.app.extra.PROVISIONING_WIFI_SSID": "FlatNetwork",
"android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE": {
"com.google.android.apps.work.clouddpc.EXTRA_ENROLLMENT_TOKEN": "XXXXX"
}
}

NB, I haven't tested it since it's full of dummy data 🙂

Moombas there's no such thing as a zero-touch QR. Same payload, different format. ZT only needs the DPC Extras and not the rest of the above 🙂

In intune it allows to enroll the device as Kiosk device , setup only has one option which allows to set an expiration date of the token and this is what we see in the json. Below is the code that gets generated and it does work , but when i edit it to include wifi details it doesnt work.

{
"qrCodeContent": {
"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "XXXX",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://play.google.com/managed/downloadManagingApp?identifier=setup",
"android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE": {
"com.google.android.apps.work.clouddpc.EXTRA_ENROLLMENT_TOKEN": "XXXX"
}
},
"expirationDate": "2025-12-31T18:29:59.920206Z"
}

I used your code but that doesnt work either.

asif before i wrote my own ZT-QR-code generator for our company i used this to create those QR codes: https://barcode.tec-it.com/de/MobileQRCode?data=This%20is%20a%20QR%20Code%20by%20TEC-IT%20for%20mobile%20applications

But same as jasonbayton wrote: I have never seen that "qrCodeContent" and "expirationDate" but this could be because we don't use Intune currently. But i took a look into the past where we tested Intune (using Zero-Touch Portal but the data there is the same as you provide in the QR-Code) and even there i see those things.
Please test without those things again.

Also look at this video: https://www.youtube.com/watch?v=4cejyznoN5Q
At 01:01:02 you could scan that QR with a reader (just to get the data) and even an epiration date is there, there's nothing like this in the QR data. Only Intune does need to know that this token expires at some time so a QR code using an expired token just won't work.