Before I run out and buy the Motorola Droid, I would like to have a few concerns addressed first. I have been using the Omnia, which has been a decent phone, but with its limitations. For instance, the Omnia has 8gb onboard storage memory in addition to my 8gb micro sd card; however, I keep getting a "Storage Memory Critical" error message. Does the Droid have any issues similar to this? On the topic of memory, can the Droid's memory be upgraded? I know it comes with a 16gb card, but is that the largest capacity micro sd compatible with the Droid? Last but not least, I keep my Omnia in my pants pocket all the time and when I have an incoming phone call, the slightest touch on the screen will answer the call. Does the Droid's screen remain locked even during an incoming call, and the screen requires to be unlocked before the call can be answered?