Ive had my Bionic since the 18th of Oct. Received the extended battery on the 20th. Installed and charged that night. Ran the phone on the 21st most of the day no problems. That night while using my blue tooth with moto speak and text readout, it locked up on me 3 times. Had to pull battery each time. Since then I have had it lock up once on the 22nd and once today the 23rd. Not sure if it is the extended battery causing the problem or the moto speak. If anyone has had teh same problem or know how to fix it please let me know. I think im going to keep the extended battery in for 1 full week. If it continues, I will switch back to the standard battery and see what happens. I never had this problem with my X and moto speak. Still love the phone just wnat to solve this problem.