What carrier can the BLU cellphones be connected to?

BLU cellphones are typically compatible with GSM carriers, such as AT&T and T-Mobile, in the United States. Some models may also work with MVNOs (Mobile Virtual Network Operators) that use these networks. However, compatibility can vary by specific phone model, so it's essential to check the device specifications and carrier requirements before purchasing. Always verify that the phone is unlocked if you intend to use it with a different carrier.