The myTouch 3G is a cellphone manufactured by HTC and branded for the T-Mobile network. In March of 2011, AT&T announced plans to merge with T-Mobile. Following the merger, the T-Mobile network will be wrapped into AT&T and myTouch users will be able to continue using their phones without interruption. Until then, using a T-Mobile myTouch 3G on the AT&T network requires that the phone's SIM card be unlocked, allowing the phone to operate on alternate GSM networks other than T-Mobile.
Instructions
1. Turn off the myTouch 3G phone.
2. Hold the phone face down in the palm of your hand. Push down firmly on the upper left corner of the battery cover to release the locking mechanism. Remove the battery cover.
3. Lift the battery out of the compartment. Write down the IMEI number listed on the exposed label inside the battery compartment. Be sure to jot down this number correctly; you will need it to unlock the SIM card on the phone.
4. Slide the T-Mobile SIM card installed in the myTouch 3G out of its slot. The SIM card slot is located in the battery compartment. Insert a new SIM card programmed for the AT&T network into the card slot. The gold contacts on the front of the SIM card should be pointing down as the card is inserted and the chipped corner of the card should be facing out of the card slot.
5. Reinsert the battery and reinstall the battery cover.
6. Contact T-Mobile customer care at 1-800-937-8997 to obtain the SIM unlock code for your phone. You will need to supply the T-Mobile representative with the phone's IMEI number. T-Mobile will provide a SIM unlock code for a T-Mobile phone to either a current T-Mobile Postpaid plan customer with a minimum of 40 days of active service or a current T-Mobile Prepaid plan customer with a minimum of 60 days of active service, a current account balance of at least $10, and a prior refill within the last 30 days. Former T-Mobile customers can obtain the SIM unlock code for the myTouch 3G only if T-Mobile has the code on file or can obtain it from the phone manufacturer.
If you are unable to obtain the SIM unlock code for your myTouch 3G from T-Mobile, you will have to pay a commercial SIM unlock service such as "nlockitnow.conm" or "cellunlock.net" to obtain the code.
7. Turn on the myTouch 3G. With the new SIM card inserted into the phone, you should see "SIM network unlock PIN" appear on the display.
8. Tap "Unlock." A number pad should appear on the phone's display. Enter the SIM unlock code you obtained from T-Mobile or from a SIM unlock service. Tap "Done." If you entered the correct unlock code, you will see the message, "Network unlock successful" on the phone's display.
Tags: unlock code, battery compartment, battery cover, card slot, obtain unlock