⟐ Answered 十二月 20, 2025 at 8:20 GMT-7

⟐ Answer edited 一月 17, 2023 at 10:11 GMT-7

⟐ Commented 三月 15, 2025 at 5:45 GMT-7

Any advice? Thank you.

⟐ Answer accepted 四月 19, 2022 at 6:48 GMT-7

Would it be possible to install on smartphone mainboard a custom switch to physicaly disable wireless components?

I own oneplus 7 pro and sony 5ii . I would be interested to mod one of them.

Thanks in advance

⟐ Answered 十月 04, 2022 at 12:08 GMT-7

⟐ Answer accepted 三月 21, 2024 at 6:58 GMT-7

⟐ Answered 七月 07, 2024 at 22:15 GMT-7

I'm trying to get to know what this component is (resistor, capacitor, or something else?), and what value it has (e.g., resistance [Ohm], or capacitance [F]).

At first I was quite sure that it is a capacitor because of it's coloring, and thought it read around 0.8 pF, but now I am doubting, and the 0.8 pF reading is achievable without the component, just by bringing both lead ends closer together on parallel capacitance measurement mode on 100kHz.

Maybe you can help me out, as I have no idea how to measure it.

The readings are quite all over the place.

This video is me trying to measure it on capacitance mode on a DER EE DE-5000:

https://youtu.be/yuof1fu6fRU?feature=sha...

All help is very much appreciated!

Resistor measurement attempt:

https://youtu.be/xAOom--sgwg?feature=sha...

More close-up photos of the component: https://imgur.com/a/s3hCpFz

Photos of location of the board it came from:

A OnePlus 7 pro phone mainboard, in the right bottom corner of a UFS chip.

I took two pictures, in the second picture you can see me pointing at the location with a set of tweezers.

https://imgur.com/a/Lm4qOQX

If you have any idea how to determine what this component is and what it's value is I would be extremely thankful! 🙏

Any suggestions how I can measure this component? I bought Probe Master 8152 spring loaded micro-tip test leads, but those do not seem to work with the EE DER DE-5000.

https://eleshop.eu/probe-master-8152-spr...

I just got the last (fourth) phone last week. I tried it and worked fine. Then disassembled it, still worked perfectly fine. Then disassembling the metal cover shield. Then testing it again, and still works fine.

Then carefully removing the component with Kapton tape over the other components, no clean flux and a hot air desoldering station to get the 0201 component off the phone.

The phone doesn't work without this component.

I looked up YouTube videos of mainboard schematics of the OnePlus 7 pro and found that it most probably is involved as a power-on line. As I tested with the second and third phone I got, I did exactly the same as described above and they wouldn't turn on without this component.

Does this mean that it is likely not a decoupling capacitor?

Some more info and pictures of it I was able to find via Borneo Schematics:

I'm struggling figuring out what component is on the right bottom of the top chip, it's greyish, but I am not able to measure it. https://imgur.com/a/oNTbvQO Perhaps you know? Thank you so much in advance!

I've added more pictures of the component I am trying to figure out over here: https://imgur.com/a/DUlGWZJ

Because it is grey-ish, is it a capacitor, or is it maybe a ferrite bead?

⟐ Commented 一月 07, 2025 at 13:36 GMT-7

From watching teardowns, I have no idea why only one part of the screen would be dead. I thought it might be an issue with the optical fingerprint scanner, so I tried taking that out, but still the same problem. Any idea what I might be able to do to fix this?

EDIT: forgot to mention, I’m also getting “ghost touches” in around the middle of the screen, between the working half and non-working half. Happens mostly on the left side of the screen. Don’t know if that helps to figure out what’s wrong/broken.

⟐ Answer accepted 一月 22, 2024 at 20:04 GMT-7

⟐ Answered 八月 28, 2025 at 18:13 GMT-7

I desperately need to know the component and the value of this unit so I can replace it in a OnePlus 7 Pro mainboard.​

1) Any idea?​

I suspect that it might very well be either a 2.2 uF capacitor, or a 1 uF. It is connected to the VDD N-FET pin of a Samsung UFS.​

So, I think that it is a Samsung UFS V_DD N-FET pin 0201-sized grounding ‘MultiLayer Ceramic Capacitor’ (MLCC).

2) What would happen if I installed the 1 uF while a 2.2 uF capacitor was required, or vice versa?

Thank you so much in advance!​

I have not been able to find a OnePlus 7 Pro schematic, but have found one of the OnePlus 8 Pro with a Samsung KLUDG4UHDB-B2D1 UFS-3.0 (listing a 2.2uF); Oneplus-6 UFS 2.1 (listing a 1 uF but in parallel), which is most probably Samsung’s KLUDG4U1EA-B0C1 which the OnePlus-6T has which is also UFS-2.1, OnePlus-6 has UFS 2.1 2-LANE 64 GB / 128 GB / 256 GB editions, while OnePlus-6T has 128GB / 256GB editions, and there is only a half year release date difference ; and a OnePlus-3T with Samsung’s KLUCG4J1CB-B0B1 UFS-2.0 (stating that a 1 uF one should be used in case of a Samsung UFS). The OnePlus 7 Pro has a Samsung KLUEG8UHDB-C2D1 UFS-3.0. This makes me to conclude that it is most probably a 2.2 uF. I have added attachments of the schematic diagrams I could find. I have highlighted the V_DD I_Q line.

Any thoughts on this?

⟐ Commented 一月 15, 2025 at 15:33 GMT-7

⟐ Answer edited 八月 31, 2024 at 9:00 GMT-7

⟐ Commented 八月 15, 2023 at 9:35 GMT-7

👇👇👇👇

Link image phone turn on: https://ibb.co/sFgKv20

Link image phone turn off: https://ibb.co/D5MggL8

⟐ Answer edited 五月 14, 2022 at 16:46 GMT-7

⟐ Answered 五月 14, 2022 at 14:27 GMT-7

⟐ Answer edited 二月 10, 2022 at 3:19 GMT-7

⟐ Answered 十二月 27, 2021 at 21:38 GMT-7