Originally Posted by FatalSaviour
Try pushing the phone case above the battery door down a bit first. Then try pushing down on the battery cover and sliding it free. That's how I had to do it anyway.
Dude i have tried on numerous attempts and even took it local mobile phone shop who couldn't make it budge. They had a w810i in stock and took lid off with ease. He told me mine is stuck and that I need a replacement handset.
Could it be the battery? Taking it off was easy.. only happened once I placed battery inside and put lid over it for charging.