<div id="doc-original-text">HTC 911 Roaming Assistant.<p>Application will automatically switch the mobile to Flight mode when network becomes unavailable and back when it is available again.<p>As an option, this application is capable of switching off MMS and 3G/EDGE function.<p>Helpful for those people who travels in subway or in another remote areas out of phone networks coverage and wasting all the battery charge only for network registration attempts.<p>Note, you should turn PIN code off on your SIM card to make application function.</div>