Apple iPhone 4 -8GB, Black, Partly Working, (EE) No Signal -SPARES or REPAIR

APPLE IPHONE 4 16Gb EE - Black. Also, recently when I checked it, on inserting a SIM card, it is not picking up a GSM Service Signal, just constantly says 'Searching', and then states 'No Service'. There are a few marks around the edges of the phone.

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