A:AnswerYou will have to pay an upcharge with your carrier because of upgrading your device. No, you can't just change the SIM card. Buy this at Best Buy and it will be cheaper than buying at your carrier.
A:AnswerDownload for free app Open Office. Open Office is voluntary donation funded. It works fine for most users. Microsoft no longer bundles a free copy of MS Office with any device, preferring to charge you a subscription fee to use their product.