Your phone is locked to its carrier. In order to use a different carrier, you should first unlock phone!!!You can use codes to unlock your Samsung SGH-E900! Unlocking using codes is easy and the safest method!! You can get the codes from your service provider or from reliable online sites like
onlinegsmunlock.com .You can get the codes by specifying Your phone's manufacture, model,country and network!The steps to unlock is simple here and the codes are affordable!!!!
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