I sold it much quickly than I thought (sold right after I posted on Amazon on Nov. 18, 2013), and I did back up photos using 3 approaches.
2) Back up to PC using the backup utility on the Phone;
After using google+ backup on my Nexus 4 for a while, I liked it and decided to give it a try on my iPhone and iPad. I enabled the auto backup feature. There is a limit for each account, I believe. An interesting thing I found out about google+ in the new year, is it creates a slideshow (about one minute) using the photos in google+, for me it’s mostly about my daughter’s activities. This reminds me of Facebook year in review feature (kind like year book). One thing keep in mind is the privacy, if you decide to share it, the default setting it share to public, so use your judgement when you share.