Blackberry 9720

Hi Cell C,<br> <br> I have upgraded my phone to a blackberry 9720, in February 2015 - so this phone has not been in my possession for more than 6 months yet, and the phone continuously reboots itself, the phone dies while having a full charge, and then when it decides to eventually join me in the connected world, guess what? Well, the batter is then depleted, and it reboots again.<br> <br> Or on a charged battery, it keeps turning off cellular data, saying something in this line \Battery drained