I've been doing some research into Lithium Ion Polymer (Pouch) batteries which are the type in our RAZR and RAZR MAXX phones, as well as most other flat-pack type batteries in various other newest generation smart phones. There have been many threads about these phones getting cracked screens for no apparent reason, especially most recently with the Droid RAZR and RAZR MAXX. Sometimes it's fine sitting it down at night before going to bed, placing it on a charge, and then waking up the next morning to find it cracked. Other times people claim no abuse such as dropping, bending, etc., and yet they too seem to have gotten cracked screens with no apparent cause. I ran across a short commentary regarding these battery packs expanding during charging and thought I'd mention it here. From Battery University (Pouch Cell - Small but not Trouble Free – Battery University)Pouch packs are normally Li-polymer. The energy density can be lower and be less durable than Li-ion in the cylindrical package. Swelling as a result of gas generation during charge and discharge is a concern. Battery manufacturers insist that Li-ion batteries do not generate excess gases that can lead to swelling when properly used. Nevertheless, some swelling can occur and most is due to faulty manufacturing. The pressure from swelling can crack a battery cover open and in some cases break the display or electronic circuit. :blink: This may explain at least a small number of those screens that cracked when not even being touched such as those on charge during time when the owner is sleeping. It may not be the cause for any of those cases, but it's certainly worth consideration.