If I buy a new iphone or any type of smart phone, will my imessages still be sent to my old iphone?

Question

My sister had her iphone 3gs stolen, she went and got a new sim card and is not using a Samsung Flight II. The person who has the stolen phone is getting all of her imessages and has actually replied back to me. However, I am wondering if my sister goes and purchases a new iphone or some kind of smart phone will the messages continue to go to her iphone 3gs or would they go to her new phone? Thanks in advance!

Answer 1

In order to have a separate 5GB of storage he would need to have his own iCloud account with a separate ID.  You can still share the same ID for iTunes; it does not need to be the same as the ID used for iCloud.
In order to migrate his phone to a separate account, begin by saving any photo stream photos that he wants to keep on his phone to the camera roll by opening the photo stream album in the thumbnail view, tapping Edit, then tap all the photos he wants to save, tap Share and tap Save to Camera Roll. 
Once this is done, go to Settings>iCloud on his phone, scroll to the bottom and tap Delete Account.  (This will only delete the account from this phone, not from iCloud.  Other devices still using the account will not be effected by this.)  When prompted about what to do with the iCloud data, choose Keep On My iPhone.  Next, set up a new iCloud account using a different Apple ID (if you don't have one, tap Get a Free Apple ID at the bottom).  Then turn iCloud data syncing for contacts, etc. back to On, and when prompted about merging with iCloud, choose Merge.  This will upload the data to his new account.
Finally, if there is any merged data in the accounts you will then have to go to icloud.com on your computer and sign into each iCloud account separately and manually delete the data you don't want from each account.