If your Nokia 5200 phone is locked down to a particular network, you will need an unlock code. Cell phone unlocking is a legal practice, if you do it ethically. Many third-party businesses and websites sometimes perform this service unethically and illegally. With an unlock code, you can use any wireless provider you want. To get an unlock code, you need to obtain an International Mobile Equipment Identification (IMEI) number. This code helps your wireless provider identify your handset to get the right code for your phone.
Instructions
1. Enter *#06# in your phone's keypad. Press the "OK" button. This gives you the 15- or 17-digit IMEI number, which you will need to obtain an unlock code. Write down this number.
2. Contact your wireless provider. Ask for an unlock code. Provide your phone's IMEI number. Write down the unlock code.
3. Turn on your cell phone without a SIM card in it. Enter #PW+CODE+1# in your phone's keypad. Wait for the message to say "SIM Restriction Off."
4. Enter your unlock code. Wait for notification that you have successfully unlocked your phone.
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