Hey guys. ..
I joined today
.. my S3 LTE's IMEI is "unavailable" and I have no signal. I replaced my LCD 2 days ago as the original one cracked, and since then ...my IMEI has vanished .. the phone isn't rooted. I know how to fix it with QPST, I dial *#7284# and change my USB to the second last one and everything. .. but then QPST says "no phone" when I try backup and reload the IMEI ... plllleeease help me !!!! 
I joined today
.. my S3 LTE's IMEI is "unavailable" and I have no signal. I replaced my LCD 2 days ago as the original one cracked, and since then ...my IMEI has vanished .. the phone isn't rooted. I know how to fix it with QPST, I dial *#7284# and change my USB to the second last one and everything. .. but then QPST says "no phone" when I try backup and reload the IMEI ... plllleeease help me !!!!