I got myself an Etisalat modem (zte MF190A) today after I lost my Airtel Modem, but along the line I decided to use another network SIM card on it but it wouldn’t work. Guess what? It was asking for 16 digit unlocking code which means the modem was LOCKED and only to be used with the default SIM. For a moment I brainstormed and came out with what I call the easiest way to unlock zte M190A modem. I thought it would make sense for me to share with you specific guide on how to unlock etisalat zte mf190A modem (and use another SIM card) in case you come across such situation. How to Unlock your Etisalat ZTE Modem Before anything, remove the SIM card that came with the modem and Insert an alien SIM card (e.g. Airtel, MTN). – Download DC Crap Unlocker from this linkhttp://www.mediafire.com/download/y9qmtfvyz6h93zh/Most_DC_Uclocker.rar – Plug the modem on your computer and open DC Crap.exe Now follow me carefully! Under select manufacturer choose “zte datacards”, click on Auto detect and finally click on “Unlock” (see appended photo). After Unlocking Zte MF190A Modem What Next? This is where most people fail. Basically, after unlocking any USB modem you have to add a new internet connection settings for the SIM Card you intend to use on the modem. For instance I want to use AIRTEL I need to add airtel internet connection settings. To do this click on settings > connection settings > add (see appended photo) Here is the connection settings for all networks in Nigeria, pick the one you need AIRTEL Config filename: airtel Dial number: *99# Click “Save Username” and enter internet for password and username Click “use the following APN” and enter internet.ng.airtel.com Click on Ok/Save. MTN Config filename: mtn Dial number: *99# Click “Save for Username” and enter web for password and username Click “use the following APN” and enter web.gprs.mtnnigeria.net GLO Config filename: glo Dial number: *99# Click “Save for Username” and enter flat for password and username Click “use the following APN” and enter gloflat That’s all, I hope this helps. Incase you need further assistance simply use the comment form below this post I will get back to you as soon as possible.