This tutorial is a “Fix For Blackberry 9720 Sim Card Rejected, Invalid Sim Card, Sim Disabled, Network blocked, Enter Subsidy Code, Enter Correct SIM, Incorrect SIM, Phone Disabled, NETWORK LOCK and Invalid Network SIM” errors which are very common not only on this model but too with others. If you have been looking for a quick solution on how to solve this, taking your time and getting through this might help you out.

The [[[Blackberry 9720]]] is a real smartphone unlike other old RIM devices we know. This mobile phone has all interesting features and characteristics which many people would want in a device they own. Yes, as a BB devices lover, I was promoted to buy it at lowest price at Amazon, and too for my wife from eBay but guess what, all of these devices came in a state which didn’t favor us to use them.

Mine showed an invalid sim while that I bought for my wife showed an invalid network SIM. As usual just like you are used to me, I tend to always search my best to find a working trusted solution, and so to what I came up with on this BB RIM device. And for this, I am sharing with you some alternative fixes which may be best for you towards helping you enjoy this rich feature smartphone.

Unlock Blackberry 9720 alternative solutions

Online through Imei unlocking providers – This is one of the quickest ways. Yes, you visit a trusted online service provider, select the model of your device from the drop down lost, select the error its giving eg incorrect sim, confirm order, chequeout and wait for the given duration which is always within 24 hours. This option involves an unlocking code emailed to you but only after paying the required amount of money.

Phone Technician using Computer Aid – These are geeks in this field. They have different options of clearing any error related and can be found within your location. All you need is to contact them, agree on their charges and wait for your device to be worked on. It is all very simple and easy.

You should note that this is not good if you are attempting to do it on a stolen BB phone, and or one which you have no right to use. This is because a non legitimate device stands you many chances of taking you to jail or even courts of law. This is for informational purposes only.