How can I tell if my Nokia 521 is locked to T-Mobile or not?

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Windows Central Question

how can i tell if my nokia 521 is locked to t-mobile or not?

I payed full price for it from amazon, & I started a prepaid $30 monthy plan couldn't get coverage at home, so I had service less than 30 days did not purchase another monthly plan
 

Alienhead95

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Jul 17, 2013
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Re: how can i tell if my nokia 521 is locked to t-mobile or not?

I think your phone is locked, because paying full price doesnt unlock the phone. You have to request an unlock code from T-mobile to get it unlocked. If you want to check if your phone is unlocked or not, there are two ways to do it:
1. If you have an at&t sim lying around, put that in the phone. If it says invalid sim, your phone is locked.
2. Enter ##7820# on the phone dialer. If you see an open lock, your phone is unlocked, othewise it is locked.
 

Corepc

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Re: how can i tell if my nokia 521 is locked to t-mobile or not?

To get it unlocked from t-mobile you need at least 6 months of service from them or use a cellular unlock sevice
 

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