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Brian
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My iPhone 4 might have antena or sim tray not working?

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I have to keep resetting my iphone because it keeps telling me no service, sim failiure , no sim/invalid sim. It has no water damage , i have dropped a few times. Could some one help me with this please.

Edited by: Brian ( )

Thank you i never though of cleaning the sim and that was the problem.

Brian,

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nick
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Try a new sim

SIM dosent work,clean the contacts

No luck,you need a logicboard because of the fact the sim contacts are mounted with SMD

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Jake Devincenzi
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Here's the guide for replacing the logic board

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Installing iPhone 4 Logic Board

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