Q: where can I find my pre order number for an ibook

There aren't pre-order numbers for purchases from the iBookstore (nor for items from the iTunes store), you will only get an order number when you book is released and you purchase it

I had the same problem, looked everywhere on my iBooks app on both laptop and iPad and eventually found the order number in my iTunes Store.

1) Sign up into your iTunes account (iTunes Store) on your MacBook.

2) Go to the tab "Store" on top of your screen.

3) Click "View Account".

4) The iTunes Store Tab will open.

5) Scroll down to "Purchase History".

6) It should view "Most Recent Purchase" and "View All".

7) Click "View All" and you'll see order numbers of the items you purchased.

Your Purchase History may be hidden in your iBooks tab so this is probably your best bet.  Also "See your purchase history in the iTunes Store - Apple Support" or "Hide and unhide purchases in the Mac App Store - Apple Support " for detailed steps with pictures.

*Not sure when they give the actual order number for pre-orders. For me it showed up 4 days in my Purchase History before the actual release day. It may vary for each order.

sim locked iphone5

Pre-orders don't have an order number, they only get a number when they are released and purchased

If your phone is locked to a carrier then contact the carrier, only they can unlock it