Blackberry curve 8310 says invalid sim

Do you need to unlock your Blackberry Curve 8310 from network lock?Blackberry has 10 unlocking tries..So you have 4 remaining unlocking tries.You can get the unlock code from the site
Classicunlocking.com for Blackberry Curve 8310 and unlock it easily using the unlocking instructions below...

Blackberry Curve 8310 Unlocking Instructions

Warning : Do not enter any wrong unlock codes on your Blackberry Curve 8310 mobile phones. If you enter over a certain amount of wrong unlock codes on your Blackberry Curve 8310 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch on your Blackberry Curve 8310 with any Sim card and Turn off all Wireless connections.
2 - Go to Settings.
3 - Go to Options.
4 - Select Advanced Options.
5 - Select SIM Card.
6 - Type MEPD using your Blackberry Curve 8310 keyboard (NOTE: You will not see any text appear on the screen while typing MEPD),
7 - Type MEP then hold 'ALT" key and type number 2.(NOTE: You will not see any text appear on the screen while typing MEP2),
8 - You will then be presented with a prompt "Enter Network MEP Code". Type in the Unlock Code and press in the track wheel / jog dial to confirm,
9 - Your Blackberry Curve 8310 will now be unlocked.

u need to borrow or use someone elses phone n call t mobils cs help line n tell them u accidentally locked ur sim card n need the puk code, they will tell u wht to do from there n give u the master code as well.

If you're getting an error saying "Invalid SIM Card" or "Incorrect SIM Card" then the you would need the unique unlock code for the phone.

Unlock AT&T Blackberry 8310



Unlock AT&T Blackberry 8310

call to customer care and tell about this reason he will give the solution

Go to BlackBerryMEP.COM and buy an unlock code, they will send unlock code along with unlocking instructions in 5 minutes .

BlackBerryMEP.COM .

1. (easyer way) When I got my Blackberry, I had to put it in a couple of times for it to work.

2. Buy a new sim card.
If this does not work, then check to see if it is unlocked.

You can get the puk code by calling your phone service provider, the phone doesn't have a puk code, if you change the sim card it wont ask for the puk.

Go to your provider and ask for a new sims card. They should give you one free of charge. This corrected the same problem for me.

you can Unlock your Blackberry 8310 Curve with imei unlock code. it is very simple and eaisiat way to unlock your Blackberry. get your Blackberry 8310 Curve Imei Unlock Code . and use any gsm sim card.
i hope this will help you .