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.
Into your e66 to check if the problem is your phone or the sim. 2. 1. If your Nokia E66 is prompting on the screen to Insert SIM, and you are in Offline Mode, you have to switch your device off. Remove the SIM card.Wipe the metal portion of the SIM and then put it back.If it is still not working, you have to pull it out again then get another phone.nsert your SIM into another phone and check if your SIM is still active. You can also put another active SIM into your E66 to check if the problem is your phone or the SIM. If your phone does not accept any SIM even if the SIM is active with other phones, you have to bring your device to the nearest Nokia Care Center.