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Hi my motherboard keep displaying no service after putting correct sim card, ive tested it with diffrent motherboard on same phone to make sure its nothing to do with antennas and stuff, is there any chance to fix that issue on motherboard? If yes, what do i need to replace on logic board? Everything apart from that works.

Look in settings, does the phone produce and IMEI #?

Yes it shows me imei, phone number and connects to wifi etc but just shows no service all the time no matter what ill do from typical fixes from the internet and when im trying to make a call its just silence in the speaker.

Still this same my friend

maybe i need to replace this part on motherboard? http://www.ebay.co.uk/itm/Genuine-iPhone