All the major carriers have smartphone apps for managing your account, and they're generally boring but useful tools for checking your balance or paying your bill. However, a recent update to the T-Mobile My Account app for Android has added advertisements into Android notification area. A number of users have taken to T-Mobile's forums and the app's page in the Google Play store to complain about these ads, though its worth noting that they appear to be for T-Mobile promotions only — there's no evidence yet that T-Mobile is selling out the space in your notification bar to third-party companies. Of course, T-Mobile is far from the first to do this — plenty of game publishers (like EA) sneak ads into the iOS Notification Center if users allow notifications for that app. Nonetheless, this sounds like a great annoyance — the notification bar can get cluttered enough with legit alerts without having T-Mobile dropping in unnecessary ads.