Hi All, I updated my Samsung Galaxy S6 to Version 6.0.1 a couple weeks ago, ever since a number of things have started to go wrong with my galaxy S6. Mainly.... Today I used 'Ultra Power-Saving Mode' for the first time. After setting the phone back to regular mode, all my contacts (except for the few stored to my sim card) have disappeared. I have cleared the cache, spent a long time on the phone with T-Mobile (who had no solutions), but can't seem figure out how to get them back. I do not have gmail to back them up from; I do have a google account under my outlook address. The odd thing is, even the facebook contacts I had synced with my contacts won't reappear - and I have tried to re-sync everything. Any solutions or suggestions would be greatly appreciated? Also - on a side note - ever since doing the update to 6.0.1 my phone has been using quadruple the amount of data and the battery life only lasts a couple hours, when it used to last all day. Any help would be fantastic - thanks in advance!