Earlier this spring, I took the back off my phone only to find that the battery had swelled up and was bulging to the extent that it was difficult to close the back cover. I called the local Microsoft Store from where I originally bought the phone in November of 2015 and they told me that they were no longer selling Microsoft phones or accessories since December of 2016. I explained my problem and that I was scared of buying a third-party battery, given the Samsung Galaxy Note fiasco. The young lady I spoke with said that if I still had the receipt, I should bring back the phone and she would refund what I paid in full. That is what I did, bought a new Samsung Galaxy S7 on sale and pocketed the difference. I really do miss my Windows Phone (I've owned a Lumia 920 as well), but it's apparent that MS has abandoned them.