It wouldn’t be a mobile OS update without a few unexpected bugs, and Windows Phone 7.8 is no exception. With WP7.5 users all over making the switch to this WP8-lite, we’re already hearing reports of a couple problems users are running into, including volume problems for Nokia owners, and some big data consumption issues with certain apps.

Oddly enough, both these issues sound like re-hashes of old problems. Last year, we saw Nokia deliver updates to its Lumia models to fix issues with volume control, and now we’re hearing more volume-related complaints from users who have just installed WP7.8. They’re saying that their phones are just being too darn quiet overall, and they need to seriously dial-up volume levels to hear things at the same levels they used to. We realize, that’s not quite the same as the old volume problems on these models, but audio in general seems to be a recurring source of glitches for Nokia handsets.

The data issue crops up when an app you’ve pinned as a live tile tries to fetch an icon from a remote server unsuccessfully. While WP7.5 was smart enough to recognize when a link didn’t exist or a server was down, and it would limit further attempts to retrieve the tile, WP7.8 appears to no longer have that safety net active. As a result, apps in this boat can eat up your mobile data to the tune of 1MB per minute, trying to download something that’s not there over, and over again.

While that problem can be solved by un-pinning the app or notifying the developer about the server issue, there’s currently no easy fix for the Nokia issue.

Source: Nokia Discussions, WP7 Root Tools
Via: phoneArena, My Nokia Blog