Speaker is not working

@monoarakha45910 could be the speaker but it could also be the headphone jack. After all, the headphone jack functions also acts as a switch to turn the speaker either off or on, depending on if you insert or remove the headphones.

The headphone jack is on the charging board. To replace the speaker, and since ifixit does not yet have a guide for this, use the one from here. For the headphone jack (charging board) use this guide. Both of these are written is Spanish. Use a browser that does the translating for you, if needed. Replacement parts are readily available at many online places.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same issues with their device. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!