To everyone in this thread,
I was caught out early with this and posted on here Febuary 28th wondering what had happened to my contacts.
I have carefully read through each reply as they came in listening to peoples frustrations & trying some of the sugggested actions, None of which really helped me but apprecaited the fact everyone was trying to help each other with what is a crazy problem !!
All the time I was still running the older 5.1.1 software, refusing to update due to changes that I didn't want enforced on me & partly down to the fact I dont like being told what to do.
The contacts wiped again during this period after the Apps kept crashing or the phone freezing a further 2 times which left me as frustrated as the 1st time it happened & Again having to key what I could back in was driving me mad but then towards the end of May it got really ridiculous, In the space of one week the phone either froze, rebooted itself or started crashing out of EVERYTHING including messages & call functions 4 TIMES !!! And each time Zero contacts were left once it restarted or I had restarted.
Enough was enough now, no matter how much I wanted to keep the old software or not be told what to do, it just wasnt worth it any longer as I was losing the basic funtions of any phone & on a regular basis, Just lost all faith in the device & couldnt bare the thought of keying the contacts back in again.
Upgraded to 6.1.3 a week ago now - Guess what.... No Problems! hasn't crashed out of one App, turned itself off or even Frozen once... Ive turned it off a few times myself to check & everytime the contact have remained. The changes although inforced on me which I hate are actually ok... the phone itself seems much quicker, the battery is lasting longer & even the Google Maps App that I downloaded is not much different from the in built one on 5.1.1
If you are still holding out on updating then Fairplay to you but for me it just became to much.... I needed the phone to work as it should. so If you do get to this point & worry about updating I promise you I have had NO Problems & now starting to wonder why I held out for so long....... Good Luck People!