Help help me add minutes to my flashed phone

[jesserobbb]

i just bought an htc phone from a co-worker (it was sprint, but he flashed it over to straight talk) ... it even says straight talk on the screen now... but... i cant figure out the telephone number or what serial number was used in cloning, so... i cant add minutes. im clueless in what to do... he doesnt know either... everytime i call customer service... they want my serial number, which i dont have... and tell me to dial a *22??? number to re activate phone, but it never works. Please help

 

[DragonSlayer95]

Granted I've never used a flashed phone nor do I know much about them.

But from what little bit I do know, the flashed phone currently has the cloned devices esn/imei

Wouldn't you be able to go into your settings/about phone to retrieve the esn for straight talk to add your minutes?