How Do I Enter an Unlocking Code on a T-Mobile Dash Phone?

T-Mobile is the exclusive dealer of the T-Mobile Dash, a smartphone device manufactured by HTC. T-Mobile locks the subscriber identity module (SIM) in the Dash to prevent you from inserting another network's SIM card and using the phone on another network. To unlock the SIM, you need the unlock code. You can ask T-Mobile for a free one or buy one from an unlock code retailer.

Instructions

1. Turn the T-Mobile Dash off. Lift the back cover off the back of the handset. Remove the battery from the compartment.

2. Insert the non-T-Mobile SIM card into the slot with the gold contacts facing down and the cut-off corner facing right. Push the SIM card in until it clicks into place.

3. Replace the battery and the back cover on the handset. Turn on the T-Mobile Dash.

4. Press "Enter" when the screen tells you that the phone does not recognize the SIM card. Enter the SIM unlock code on the next page. Press "Enter."

Tips & Warnings

T-Mobile offers free SIM unlock codes to customers that meet their requirements. Contact T-Mobile customer care for more information on whether your account qualifies.

The wrong SIM unlock code can damage your T-Mobile Dash. It only gives you a limited number of attempts to enter the correct code. If the handset has not unlocked in three attempts, contact the source of your SIM unlock code for troubleshooting help.