Phone [Q] Will Bad ESN S5 working overseas?

Hello All,

I am thinking of buying a bad ESN Galaxy Sprint S5 from US. So, my question is will I be able to use it here in India after unlocking region lock? And secondly will I be able to unlock it using 3rd party website for unlocking cell phone for international use? And if I buy factory unlocked bad ESN Galaxy Sprint S5 will I be able to use it here in India with any GSM networks or not? Because S5 is supported both CDMA and GSM bands so sprint is a CDMA company thus if CDMA is locked through bad ESN if I unlock the GSM for international use I can as far as I read upon different forums. But want expert advice who have tried this :P

Regards