Do we need to purchase another SIM to use a BlackBerry smartphone?
It is not necessary to purchase another sim card to use with your Blackberry phone.If you want to use another network because of current network provider charge high for calls,texts,data plan etc..you can switch to other network provider.For that you need to unlock it.After unlock a locked Blackberry phone you can use any GSM Network sim card.Visit the site Unbblock.com get unlock code at low cost and unlock from service provider lock easily.Then use any GSM network sim card in it.
