Why sims card doesn't work ?

[Android Central Question]

one of my friend just bought BLU Life one x2 and now he is in Cuba and he is trying to install sims card from cubacell and it doesn't work. is there anything that we can do to get it work, thanks

 

[Tim1954]

If the device is locked to a network, that network can unlock it for you..

 

[Rukbat]

And even if he gets it unlocked, Cubacell uses Band 1 for data, the phone doesn't have Band 1, so it's calls and text only for him.