Device(s): LG Nexus 5, Samsung Galaxy Nexus, Asus Nexus 7, Moto Droid X, HTC Droid Eris
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I think your friend's best bet would be to return it back to the seller and have them explain why it's not getting a network signal and replace the device if they can't get it working.
If it wasn't getting a network signal when the device was originally purchased, then you're not likely to get it working again without the carrier's assistance (unless there was something done that could account for the loss of the network signal since the purchase--in which case you'd need to tell us what that was).
Device(s): Xperia Z1, Nexus 7 3G, HTC One X, SGS3 Mini
Thanked 16,348 Times in 8,748 Posts
Originally Posted by alex9999
No no. Why you thing that.. i searched in google.. and what i find is this demo unets is a test device..
Either way, "test" or demo device, we can't help. That phone is not for public use and your only solution is to return it to where it was legitimately bought so they can replace with a real, working unit.
As it's not the standard software, any rooting or flashing guides have the potential to brick the device, rendering it useless.
Your only way forward is to take it back to where it was purchased.
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