I was texting and suddenly my cellphone crashed and stopped! I had to remove the battery, but after removing the battery my cell phone started to reboot automatically continually!
If your phone been rooted, then that could be some of the issues. If you're not rooted, then I would suggest trying to enter recovery mode, and wiping the cache partition, see if that might jar it out of boot loop. If not, you may have to do a factory reset from recover, assuming you can get into recovery.