Question About BAD IMEI,BAD ESN

[darkthugs]

i'm new in the forum and i have two questions
i got my smartphone stolen 2 weeks ago, i live in mexico and i use TELCEL (GSM carrier)
in my country the smartphones are really overpriced like $913 US dollars for one samsung galaxy S4
browsing on ebay i saw a lot of BAD IMEI and BAD ESN smartphones very cheap compared to the retail stores in my country
obviously i would only buy one smartphone that could be use on one GSM carrier.
1.if i buy one smartphone unlocked with bad imei or bad esn could i use it?
2.if i buy one smartphone locked with bad imei or bad esn ,could i do something to unlock it(like to pay for one unlock code,flash it) and use it?

thanx .

 

[Aquila]

Generally it indicates that the device has been reported lost, damaged beyond repair or stolen to the manufacturer and/or carriers. It is highly recommended to avoid purchasing those devices.

 

[Rukbat]

You can unlock a phone with a bad IMEI, but the question is whether any carrier will allow that phone on its network. In the US, any phone reported lost or stolen, and any phone with an unpaid balance on its account, won't be accepted on any network. That may be different in Mexico.