I found a replacement polarizer on AliExpress for my Vankyo v630w, specifically for my model. Perhaps they also have the Leisure model as well.

Amazon has one for 54.00 USD but the AliExpress listing was only 16.00 USD plus shipping and a bit of wait time

For me, the battery removal was probably as difficult. maybe more so than removing the back or mid-frame. The adhesive on the left side woudn’t let go and the plastic pick couldn’t reach the left-side adhesive to release it. I finally got it through perseverance though.

Coincidence. Batteries ship without a full charge.

If you’re really slow and careful (or really lucky like I was), the entire adhesive strip will stay with the glass and none of it stays on the mid-frame. I didn’t have to replace the adhesive because there was only one tiny lifted area on the glass that I was able to put back into the correct position using tweezers.

I did apply more heat around the mid-frame as well as the back-glass though. Since the mid-frame is metal, it sinks heat and the adhesive doesn’t melt until the frame gets hot enough.

When I did my battery, the adhesive stayed almost 100% on the back glass and was still in good shape. What didn’t remain attached only lifted slightly and I was able to coax it back to its original location with tweezers. I didn’t bother to remove and replace the adhesive layer because mine was still good. I set the glass out of the way where it wouldn’t get dirt on the adhesive while I finished the battery swap. I added some additional heat (hair dryer) after reattaching the glass to make sure the adhesive made the best seal.