C3303 invalid sim
May be your phone is locked with some particular network.Hence when you insert other networks it shows the error message "Invalid Sim"...If you want to use the Samsung C3303 with other networks you need to unlock it.To unlock you can approach Simpleunlocking.com and get the requires unlock code along with free unlock instructions.
My samsung gt c3303k memory card problem. When i memory card enter then memory card donot support. When i open the memory card then memory card see memory card removed. how i use properly memory card and how can i solve the problem?
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