iPhone won't turn on after replacing housing?

[dakotadakota]

I did everything correctly, put back together fine, and installed new battery in the process. But the phone won't turn on? Any help?

 

[killerrobot]

Just checking but did you charge the new battery? You might have to let it charge a while before it powers on.
Other than that, reopen, double check all the connections and try it again.
If it still doesn't work then it seems your "new" battery is crap.