My Nexus 6p battery had died on me some time ago while on a 2yr assignment, and while in Thailand I bought a Hauwei Nova 2i as areplacement, which worked fine for Google Fi for the rest of my assignement in India. However, once I returned Home back to USA the Google FI SIM would not work. I bought a Battery for the old Nexus 6p and replaced it today, no problems. I used a portable oven to heat up the glass and the plastic piece enough to gently pry the Glass and the plastic cover off. The battery came off pretty easily by using a plastic pry bar and pushing a guitar pick under the battery at different points while continuing with even pressure of the pry bar. it does help to heat up the whole phone a little to remove the battery.