a software issue with the NFC component that is a requirement for a mobile device running Google Wallet. Conspiracy theorists saw the problem as Google getting back at Sprint for creating its own Google Wallet competitor called Sprint Touch. A few days ago, when Google said that it had restored Google Wallet functionality to the HTC EVO 4G LTE, it seemed that this story was over. But after Google pushed out an update to Google Wallet for "Support for new device form factors," "prepaid top-up improvements" and "security enhancements," a number of HTC EVO 4G LTE users were still complaining that it was out of commission on the Google Wallet Google Play Store site.
This is rapidly turning into a PR problem for both Google and Sprint with both sides being blamed for the problem. Again, some question whether or not this is a payback by Google, aimed at Sprint Touch while others place the blame on Sprint in an attempt to force users of the phone to use Sprint Touch once that mobile payment system is up and running. Whatever the truth is, the main objective should be to restore the feature on the HTC EVO 4G LTE.
source: GooglePlayStore via AndroidCentral