It's imei related. Since you stated it's present & not erased, that means it can't register with the network due to a possible blacklist.
Also micro Sims and normal Sims that are cut will both function in the nexus(I've tried both).
Sent from my Nexus 4 using xda app-developers app
cut sims USUALLY work, many times they dont though. mostly user error
he checked to see if its blacklisted, its not it seems.
How was the feedback of the person too bought it from? Try flashing the factory image out bring it to a phone shop for them to confirm the imei. If you can't figure it out, if you paid with PayPal you still have buyer protection to get your money back.
Ever since the release of the highly anticipated Google Nexus 5, the device has … more
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