Can my iPhone 6 Plus be updated to Ver 13.2?

No. You can’t as the last update fir this device is 12.5.5

No. 12.5.5 is the end of the line for that phone.

The iPhone 5S/6/6plus cannot update further then iOS 12.5.5 due to hardware limitations

If you're trying to get an application on it, download it to a newer unit on the same Apple ID first. Otherwise, no.

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