The size of a typical bacterial cell is 0.5-5.0 micrometers, a average human cell is 10 micrometers. coli bacterium are about 2.0 micrometers in length and .25 to 1  micrometer in diameter. In comparison, a red blood cell is about  six to eight micrometers in diameter and â¦ a thickness that ranges  from .8 to 1 micrometer in the center to 2 to 2.5 micrometers at  the thickest point.
August 13, 2012 11:20:48 PM. Unlocked GSM phone means that it wouldn't be locked into a specific carrier network. On the upside it means freedom to choose your own GSM carrier that suits your needs (and wallet) best. On the down side several carrier-specific features may not be available. If you lived in US make sure that the unlocked phone is compatible with US GSM frequencies.
Because a GSM handset uses a SIM card (where the networks information is kept) the phones also have a universally recognised SIM lock placed on them. This lock dictates which SIM cards the phone is allowed to work with. The process of unlocking a GSM phone is then made pretty simple. The SIM lock that each GSM device has is assigned an unlock code when the phone is created. This code is what we or any other unlocking company supply when an order is placed. The phone recognises this code and removes the SIM lock, allowing the phone to accept any compatible SIM card when it is inserted.