The Blu Dash 5.0 Dual SIM D410 was released September 3 2013. Repairing this device is relatively complex and requires tools that have to be purchased.
Do you mean the IMEI number? Dial *#06# and it should tell you. It's a 15 or 16 digit number and should also be printed on the phone somewhere, perhaps the back. You should also be able to get it from Settings.
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