March 2, 2018
clean ESN check

What To Do When Your Company Phones Need A Clean ESN Check

If your company’s smartphones and cell phones have CDMA technology, then they each possess a unique electronic serial number (ESN) that serves as an identifier when it comes to accessing phone carrier networks. Buying new mobile phones from a carrier will, fortunately, help you avoid ESN problems altogether. But if […]
February 16, 2018

How to Check For Clean ESNs Before You Buy a Used Phone

While you can save hundreds of dollars by purchasing a used phone rather than a brand new one, what should be a simple transaction can actually turn out to be a risky proposition and a major headache if there is an Electronic Serial Number (ESN) problem. What’s an ESN, you […]
April 7, 2017

What Do I Do If My Phone Has A Bad ESN?

If you’re buying a used cell phone, watch out, because you might get more than you bargained for. There are two types of cellular networks used around the world. GMS (AT&T and T-Mobile), which uses SIM cards to identify individual phones; and CDMA (Verizon and Sprint), which uses ESNs.  ESN […]