Schematic for the iPhone X, 2.48 MB PDF, with a contributor handle and a misspelled word in the name.

Schematic for the Samsung E1230 basic mobile phone, delivered as a fairly large PDF of about 9.76 MB, suggesting high-resolution or multi-page service drawings.

Circuit diagram for the Samsung SM-S5303 handset, provided as a 2.73 MB PDF. The name gives no board number or revision.

Nokia N86 schematic documentation in a fairly large 6.95 MB PDF, likely containing detailed sheets for the handset's main board.

Nokia N77 schematic in PDF format, 607 KB in size, a compact document that may contain only part of the full diagram set.

Nokia 7380 circuit diagrams in PDF format, 2.81 MB in size. The file name states the model but no board number or revision.

Nokia 6070 schematics in a 1.03 MB PDF document. The name identifies the model but provides no board version or revision details.

Schematics for the Nokia 5100 phone in a 798 KB PDF; the trailing 2 in the name likely indicates a second part or alternate version of the document.

Combined schematic for the Nokia 6170 and 7270 phones, a 656 KB PDF; the trailing 2 likely marks a second part or alternate copy.

Circuit diagrams for the Nokia 6060 handset, supplied as an 814 KB PDF. Repair staff use pages like these to trace supply rails from the battery connector through the…

Nokia 5800 schematics, a 1.43 MB PDF for this touchscreen handset. The name gives no revision or RM type code, so check the label under the battery and compare board…

PDF schematic for the Nokia 2260 mobile phone, about 777 KB in size. Nothing beyond the model number appears in the name, so the board revision is unknown.

Nokia 6020 schematics, second file of the set as the trailing 2 in the name suggests, in a 952 KB PDF. No board revision is listed.

Nokia 3530 schematics as a small 325 KB PDF; the name carries no revision or board number.

Schematic document for Sony VAIO laptops identified as M630 and M640, supplied as a 1.11 MB PDF.

Sony schematic in PDF form, 1.17 MB, labelled only with the MS01 project code and no model or MBX board number.

Sony MBX-194 motherboard schematic marked PVT, meaning a production validation test build, with MB_0701 likely an internal board release tag.

Apple iPhone 4S schematic in PDF form, about 650 KB. A circuit diagram like this helps trace power rails, check connections between the processor, PMIC, charging…

Service schematics for the Nokia X2-00, type designation RM-618, as a 3.79 MB PDF. Nokia service documents of this kind typically include block diagrams, circuit sheets…

Samsung Galaxy S5 SM-G900S document, a 12.3 MB PDF carrying schematic material for the Korean-market S5 variant.

Service manual revision 1.0 for the Samsung SGH-L170 mobile phone, a 3.61 MB PDF. Such manuals usually combine disassembly instructions, exploded views, parts lists…

RAR archive of about 6.62 MB holding a schematic together with a service manual for the Samsung GT-I9205 smartphone.

PDF schematic named only U400D, about 814 KB in size, with no brand, board number or revision in the name.

The 2SD2179 transistor is the subject of this 43.9 KB PDF, carrying an _E suffix in its name.

The 232 KB PDF covers the 2SD1947A, a JIS NPN transistor number with an A suffix that the name states.

Datasheet-style PDF of 83.8 KB named for the 2SD1940, an NPN transistor under Japanese JIS numbering, in which 2SD stands for NPN low-frequency types.

Named 2SD1934 with an _E suffix, this 40.2 KB PDF is most likely the datasheet for that NPN transistor, since 2SD is the JIS prefix for NPN low-frequency types.

Datasheet-style document for the 2SC5405, stored as a 37.3 KB PDF in the schematic category. Nothing beyond the part number appears in the name.

PDF of about 228 KB for the 2SA1297 PNP transistor, the 2SA prefix being the Japanese JIS designation for that device class.

Part document for the 2SA1735 transistor, stored as a 151 KB PDF and catalogued under schematics.

Component data in a 47.8 KB PDF named for 2PD1820A, with the suffix 2 likely marking a document revision.

Small PDF of 46.9 KB filed as a schematic and named for 2N1711, a JEDEC-numbered discrete semiconductor designation.

Indexed as a schematic, this 70.2 KB PDF carries the plain part number 1SS361 with no suffix, device or board details.

At 377 KB this is the largest of a group of PDFs named after 1N part codes; this one is 1N1183, a JEDEC style diode designation, so it is most probably a datasheet even…

Short code 33C804A names this 174 KB PDF, indexed as a schematic, with no device, brand or revision indicated.

Schematic set for the Samsung SM-F946B in a ZIP of about 1.92 MB, the model code used for the Galaxy Z Fold5 international version. No revision is given.

Spanish course section 3.6 about the professional soldering station, part of a chapter on workshop equipment, in a 320 KB PDF. No specific product model is named.

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

Network or RF section from the Samsung Galaxy A30s (SM-A30S) schematic collection, as a 4.29 MB PDF file.

Audio section of the Samsung Galaxy A02s (SM-A02S) schematic in PDF, covering microphone, loudspeaker and earpiece circuits, at 1.79 MB, smaller than the other pages in…