Both my tabs broke immediately with the gentlest tug, as if they were dry and ready to come off. So I heated the back of the phone with warm heat from a hair dryer and was able to push a thin flexible plastic piece (thinner than a credit card but strong enough to be pushed in) under the corner of the battery near its connector. It would go in only so far, so I kept reheating and pushing it in more, moving up the long side of the battery. This works because you’re pushing toward / against the frame side so you can exert enough pressure. You don’t need to pry or lift the battery up (and you shouldn’t anyway because you may damage the components along the side of the battery and/or the battery itself) until it’s mostly loose.