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.
I got the same question, how can I have my prepaid sim card reactivated. I haven't used or recharged this sim card for about more than six months. I just bought a new mobile phone and when I turned it on it said the sim card needs to be activated.I hope I can use this sim card again. Thank you.essage 9 of 17 (3,580 Views). DiB wrote: My sim card has been deactivated despite me recharging it in February and March. I have just been on the phone to customer help and they say that it was because these recharges were only for add on.