Hi there,

I purchased a HTC phone which has a China Mobile sticker on it, the model is called 'M9et' on the packing, but the setting of the phone shown "HTC Me", and it looks and works exactly the same as a Me, it came with Lollipop but missing the update option on the settings. I thought the phone is locked to the carrier but it works with any SIM, is there any way to upgrade it to Marshmallow ?