Can a metropcs mega work on tmo without being unlocked?

[jayinc11]

Just wondering if it's possible to use a Metropcs GMega on Tmobile without the phone being unlocked by the former?
Is it possible to self-unlock the phone if MetroPCS declines to issue unlock codes?

 

[4ringsa6]

If It's anything like other metro phones, it won't work. I had 2 metro optimus l9 and optimus f3. I thought it would be a plug and chug but the phone gave the invalid Sim error and needed to be unlocked. I know metro is owned by TMobile but I think they may have blocked metro phones to work on TMobile as metro sells them cheaper off contract. Just my 2c