This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
To my knowledge, there is no way to get the details of the device except those exposed by the CLDC and MIDP specs. and they do not have any provision to give the phone number of the device. It's all a part of the J2ME sandbox restriction!! You definitely don't want the application you install on your phone to read your number and then bombard you with telemarketing calls, do you?