I replaced the battery and nothing no screen nothing. the batt was 3.7 V though.

The old one had 0V. I might have messed up the ribbon cables?

I put back the cover on it.

Held on the power button for 10 seconds, nothing. Held the power button and the volume up button for 10 seconds… also nothing..

I am leaving it charge for a while now. Even though if your battery is like full (3.7V measured) it should come on… but nothing..

Lets wait and see. Or this will be garbage…

I replaced the battery and nothing no screen nothing. the batt was 3.7 V though.

The old one had 0V. I might have messed up the ribbon cables?

I put back the cover on it.

Held on the power button for 10 seconds, nothing. Held the power button and the volume up button for 10 seconds… also nothing..

I am leaving it charge for a while now. Even though if your battery is like full (3.7V measured) it should come on… but nothing..

Lets wait and see. Or this will be garbage…

I replaced the battery and nothing no screen nothing. the batt was 3.7 V though.

The old one had 0V. I might have messed up the ribbon cables?

I put back the cover on it.

Held on the power button for 10 seconds, nothing. Held the power button and the volume up button for 10 seconds… also nothing..

I am leaving it charge for a while now. Even though if your battery is like full (3.7V measured) it should come on… but nothing..

Lets wait and see. Or this will be garbage…