Related Videos: Lower Back Strain Video. Lower back strain is caused by damage to the muscles and ligaments of the back. Learn about muscle anatomy and the symptoms of lower back strain. Back Strains and Sprains Video. A muscle strain or a muscle sprain in the back is the most common cause of back pain. A muscle strain happens when the muscle is over-stretched or torn, resulting in damage to the muscle fibers (also called a pulled muscle). 2  A lumbar sprain happens when ligaments are stretched too far or torn. 3  Ligaments are very tough, fibrous connecting tissues that connect bones together.
The invalid SIM card error is typical of the type of error you get if your phone is locked to a different carrier than what you have. Many people offer unlocking service and typically charge between US $5 and $15 plus shipping to unlock your phone.he invalid SIM card error is typical of the type of error you get if your phone is locked to a different carrier than what you have. Many people offer unlocking service and typically charge between US $5 and $15 plus shipping to unlock your phone.
Sim cards are abour 25.00... Sometimes they will charge you sometimes they wont depends on the store. And yes your number will stay the same. Hint: Say that you were on the phone with cust service....and the codes they gave you were not working and thats why it burned out. locked(fried, burned, whatever you call it) my SIM Card because I entered the wrong PUK too many times. My SIM Card will not work on any mobile phone(I tried three other mobile phones). My provider is Cingular/AT&T.