Need i850 special code
Sorry, there is no special code. You can only use the correct Sprint Nextel SIM Card with this phone. If you are using the correct SIM Card, you will need to have this repaired at a local service center. This is covered completely by Sprint Nextel's ESRP (Equipment Service & Repair Program) and TEP (Total Equipment Protection), and can be done at any Sprint Nextel Service & Repair Location. If you do not subscribe to ESRP or TEP, the charge for the repair will be no more than $55.