First ..... I have a Samsung Galaxy S2 4G by Boost Mobile. My micro USB charging port on the phone sometimes looses its connection. Second .... Where can I get the micro USB charging port with the complete cable assembly. Third .... Are all the micro USB charging port assemblies the same for all Samsung Galaxy S2 4G phones. Does it matter which one I buy as long as it is for this type and model of phone? I know AT&T and several other carriers have this same phone but are the parts the same since it is the same make or model phone??? Lastly .... Could someone please leave me a link to the part that I need? Thanks in advance.