Estech Schemematic Tool can view schematics and bitmaps of Windows computers. It allows users to view circuits, Bitmap, and schematic diagrams on Android and iPhone smartphones. All users are free to use the tool for up to 365 days.

Guideline for Smartphones (All hardware issues such as a ringer and spk or LCD, plus more problem solutions with pic)
- Lenovo – OPPO - Realme – Samsung- Xiaomi – More models to follow
Datasheets, Schematics, and Datasheet
- Advan- Alcatel- Asus- Huawei- iPad- iPhone- LG- Meizu- VIVO- Xiaomi
Bit mapping of PCBs
- 2D Bitmap- Apple- Huawei- Infinix- Meizu- Motorola- One Plus- Oppo- Samsung- Single Layer- Tecno- VIVO- Xiaomi- ZTE
Multimeter PCB
- Realme- VIVO- Xiaomi
Download Link:: Link

Guideline for Smartphones (All hardware issues such as a ringer and spk or LCD, plus more problem solutions with pic)
- Lenovo – OPPO - Realme – Samsung- Xiaomi – More models to follow
Datasheets, Schematics, and Datasheet
- Advan- Alcatel- Asus- Huawei- iPad- iPhone- LG- Meizu- VIVO- Xiaomi
Bit mapping of PCBs
- 2D Bitmap- Apple- Huawei- Infinix- Meizu- Motorola- One Plus- Oppo- Samsung- Single Layer- Tecno- VIVO- Xiaomi- ZTE
Multimeter PCB
- Realme- VIVO- Xiaomi
Download Link:: Link