Spanish-language PDF course on basic electronics for mobile phones, filed under schematics but in practice a training document rather than a diagram for one model.

Portuguese-language handout on basic electronics, filed under schematics although the name points to a study booklet rather than a circuit diagram of a specific device.

Opening topic 1 of a Spanish course on mobile telephony fundamentals, a 343 KB PDF. No phone model or brand appears in the name.

Spanish notes on basic electronics, a 591 KB PDF. The name mentions no device, board or brand, so it serves as study material on fundamentals such as electrical…

Spanish-language course chapter on basic electronics, provided as an 817 KB PDF and apparently the same content as the numbered topic 2 of the series.

Large Spanish course PDF, 15.6 MB, on basic electronics applied to mobile device repair.

Short electronics course in Spanish, a 1.26 MB PDF catalogued with schematics but evidently a teaching document rather than a circuit for a particular device.

Electronics-for-beginners guide in Spanish, a 5.77 MB PDF filed under schematics but by its title an educational text rather than a device diagram.

Portuguese introductory study material on digital electronics, the first part of a course series judging by the numbering in the name.

Spanish-language PDF of 39.1 MB titled Electronica con plastilina, covering chapters one to four.

Spanish academic PDF of 1.65 MB: annex 1 of a 2019 master's thesis (TFM, MUPES teacher-training programme) on technology teaching units for the fourth year of ESO…